450sl fuel pressure test Check out free battery charging and engine diagnostic testing while you are in store. test the fuel pressure. Replaced with fresh oil, but just doing general testing, there is clearly a bunch more fuel in the crankcase again. 99 1. Years of Manufacture: 1971 - 1980 Number Built: 66,298 Price at Introduction: 450SL Roadster: DM 36,630 3. This 1977 Mercedes-Benz 450SL wasacquired by the sellers grandmother from the original owner and remained in her possession until she gifted it to the seller in 2018. Note the fuel pressure and the time that you installed the hose clamp. Do the transmission test Hook the pressure gauge to the fuel pump test fitting. The PCM uses the MAP sensor’s information along with input from other sensors to adjust fuel delivery to the cylinders and ignition timing according to current engine load and Fuel pressure is constant 2 bar while running, after engine is switched off the pressure slowly drops to I think about 1 bar and stays there for a long time (it was some time ago I tested that) I fitted a new pressure regulator and damper a few years ago. Sounds like you are on the right track, but CIS is all about pressure and volumes and without gauges hooked up, you are just guessing. Reconnect the negative battery cable and start the engine. My 1974 Merces 450sl keeps stalling. Each Intermotor® fuel pressure regulator is a direct-fit replacement with perfect fit and form for easy application High-temp Viton o-rings provide a high pressure seal under extreme heat conditions $13. I changed the fuel pump, accumulator, filter and rebuilt the fuel distributor. 980 1969-1971 The 450 SL was produced until 1980. 99. the lower the duty cycle, the more the valve is closed, the leaner the mixture). Fuel pump flow rate - 8oz at 10 seconds 12. Leak down- 12% through rings E-cowlboy Fuel Pressure Test Kit with Billet Aluminum Fuel Filter Cap and Pressure Test Port fit for Ford 2003-2007 6. The fuel pump is powered by a compact electric motor and is located in the vehicle’s gas tank. I have checked further into the last two components and cleared the lines. COM Series 107 - 280SL 280SLC 300SL 350SL 350SLC 380SL 380SLC 420SL 450SL 450SLC 500SL 500SLC 560SL CTA Tools 3420 Fuel Injection Pressure Tester-Bosch K Jetronic C. system pressure = 80 psi or 5. Close Divertor Valves and work the starter motor to pump the Yellow Conditioner chemical back to Order Mercedes Benz 450SL Fuel Pressure Regulator online today. FUEL PUMP TEST 2: Using A Fuel Pressure Gauge Testing the fuel pump's pressure is one of the most accurate ways to verify that the fuel pump is good or bad. fred on September 12, 2019: after setting overnight very hard to start will start perfect rest of day. Trailer hitching; 1)Ensure that the ignition system is in good shape and also the intake is in good order. Spark plug- new 15. Mercedes 450SL 1976, Fuel Tank Cap by Stant®. Close Divertor Valves and work the starter motor to pump the Yellow Conditioner chemical back to The reduced pressure in the lower chamber is called differential pressure. Free Same Day Store Pickup. It is also known as the control pressure regulator. Mercedes 450 SL: 1976 Mercedes 450SL. 6. 330SL,35SL,360SL,450SL,550,770G,Super1050 auto,XP1020, THEN the HI needle only will release the test pressure. Do not force fuel tank flap. If you turn the ignition ON the fuel pressure should build up, before you even crank the engine. If you are unsure of the FPR location, see FUEL-07 for pictures showing FPR locations. Again, a road test can be used to verify proper operation by analysis of the spark plug appearance. Yesterday I tried to start my car and it wouldn't start. Checking the tire pressure and have the alignment checked on regular basis can help prevent this problem. The car seemed like it wasn't getting any gas. Step 4. If your car does not have it, check the manufacturer’s guideline. Bad fuel pressure regulator: A vehicle’s fuel system is designed to work within a specific range of pressure, which is controlled by a fuel pressure regulator. Step 3. KG1: Comments: 1978 450SL: Old fuel pump was noisy and seemed to run too much of the time so we installed a new Bosch pump. Yes, you can feel whether they operate. Warm-up regulator- An electrically heated bi-metallic strip operates a valve that controls fuel pressure to the fuel distributor. After 20 minutes, note the fuel pressure and compare it to the specified value in FUEL-01. 5. eEuroparts. Most car models have a test port on the fuel injector rail for the testing of the pressure. © 2021 Mercedes-Benz Club of America All rights reserved | Privacy PolicyPrivacy Policy MERCEDES--BENZ R107 350SL 450SL , MANIFOLD PRESSURE SENSOR , 0280100100. Fuel Pumps for Mercedes-Benz 450SL. What do you. 0-100 PSI Fuel Injection Pump Pressure Injector Tester Test Pressure Gauge Kit. Here small amounts of air blow by can be detected when the pressure reference port is positively pressurized with air - like when the port is plumbed to a turbo charger. S. Also installed used fuel pump because a mechanic stated that my pump wasn't putting out enough pressure once the car was turned off. 2 out of 5 stars 207 $37. $299. You may need to remove the fuel line and use an adaptor for the testing. Sticking oil pressure switch is common on Benz Diesels. I need a distributor condenser for my 73 Mercedes for 50 SL I’m having trouble finding it - Answered by a verified Mercedes Mechanic Page 37 Have the follow ing items checked regularly and p rior to any long trip Fuel Supply Use unleaded gasoline, fo r octane rating see “ Capacities and last page” . This is what you would be screwing with. The purpose of your MERCEDES-BENZ 450SL fuel pump is to provide a constant fuel flow and pressure to the engine. test the fuel pressure. Main system consists of one injector for each cylinder, a cold start injector and a pressure regulator, which maintains fuel pressure at 28 psi (2. Back in 1972 to 1975, the Bosch D Jetronic fuel injection system, an earlier version of the electronic engine management system, was used by US vehicles. Ford has made it super easy to attach a fuel pressure gauge to the fuel system to test the fuel pump since there's a Schrader valve on the fuel rail (see image 1 of 2 in the image viewer). 0 Bar or 29 psi) by inserting your manometer instead of cold start valve in fuel loop line. Heavy-duty construction allows for strength and durability. 1973 450sl Fuel Pressure Problem I had my 450sl serviced at the Dallas dealership last year and they said i needed to replace the fuel pressure sensor. Mercedes-Benz 450SL Ignition Coil Replacement costs between $178 and $188 on average. Controlled pressure to the warp um regulator is good. Try or (have your mechanic) remove oil pressure switch and clean. Ford Expeditions are fuel injected vehicles requiring a constant fuel pressure that fluctuates with the throttle position. 58VDC 14. A lower duty cycle results in increased lower chamber pressure, thus returning less fuel to the fuel tank and sending less fuel to the injectors (i. Locate the fuel test port on the fuel rail. Dan Ferrell (author) on July 12 The Complete Mercedes-Benz 450SL Technical Specifications. Fuel pressure after FPR - 42-43 psi 9. Purpose. Depressurise the fuel system by opening Valve (G). Take a fuel sample by opening Valve (F). I looked ant the Warming regulator fuel line were leaking. What do you think? test the fuel pressure. 2. Equipment includes a black convertible top, a color-matched removable hardtop, a power antenna, chrome 14″ Bundt wheels, automatic climate control, cruise control About Mercedes Benz 450SL. WIX also makes a quality filter for the 450SL but is not any less expensive than the prior two. This 1979 Mercedes-Benz 450SL is finished in Medium Red over a tan MB-Tex interior and is powered by a fuel-injected 4. Many WURs have a vacuum diaphragm that Two of the most common reasons for this are a malfunctioning fuel pressure regulator or leaky or clogged fuel injectors. Or if you believe that it does not open and you have bad starting with cold engine, apply 12V to its contacts to force it open. Hey Mercedes Benz Lovers - It’s Sadie’s 35th Birthday! Yes, 5 years ago this Mercedes Benz 450SL convertible was born – you remember those days, t’s 1980 and you’re cruisin the boulevard and all the latest hits are playing: Call Me, nother Brick in the Wall, razy Little Thing Called Love, unky Town, ost in Love, abe, ailing, oo Hot mercedessource Product - With M103 Single Camshaft 6 cylinder engines from 1986 to 1993 as well as a few others. 8 watching. . Use our customer reviews of Brakes, Steering & Suspension parts and others, along with user ratings on the many of the products we offer. I would perform a fuel delivery system test. The ability for the manual version of this vehicle to get from 0-60 mph in just over 8 seconds was incredible. org for adjusting K-jet and hot/cold pressure testing specs. Rear Storage Bin Rust Protection Coverage Performed Additional Tests that were performed by an authorized Mercedes repair shop : - Compression test for engine - Passed - Electrical circuit system check and fuel pressure test Restore your Mercedes 450SL by getting a new, quality Fuel Pressure Regulator as a replacement, so everything will once again work as it should. Remove the pressure Canister and fill with 250 mls of Yellow Fuel System Conditioner. When the 450SL/SLC was launched in markets other than North America in 1973, the bigger V8 engine was also offered. 66 Order Mercedes Benz 450SL Fuel Injector online today. If you're performing this procedure due to a failed leakdown test I have 1978 450 SL that does not start. Even with 2 people, it was the hardest top to remove ever. 4L. I. 5-Inch (90-millimeter) gauge with dual calibration (5-145-PSI / 25-1,000-kPa), hose assembly and metal adapters. I did have some emission issues and only used the hardtop once. 982 (D-Jetronic) and M117. 1980 Mercedes-Benz 400-Series 450SL Convertible. Test, Measurement & Inspection; More; 450SL 450SLC 450SEL 280CE 280E 280SE Fuel Injection Pressure Damper 0280161007. well your gas Two great oil filters that have stood the test of time are Mann and Hengst. The fuel injector(s) or fuel pressure regulator may be leaking. Ran it and pulled the fuel relay and it settles down, runs great and then dies. Engines in MB 450 SL and SLC Mercedes-Benz used same engine numbers M117. The parts and labor required for this service are RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. The fuel pump pulls fuel from the gas tank to the fuel injectors. Years of Manufacture: 1971 - 1980 Number Built: 66,298 Price at Introduction: 450SL Roadster: DM 36,630 3. I th An electrically driven fuel pump forces fuel through a filter, into the main system. Changing components haphazardly is simply the no-brainer way of doing things. Depressurise the fuel system by opening Valve (G). Free Same Day Store Pickup. After the engine has been switched off, the fuel accumulator The tires, battery, and fuel lines have been replaced under current ownership. In the event that the car's Mercedes 450SL Fuel Pump Relay stops working properly, an engine will usually have difficulty starting. Free shipping Most adjustable Fuel Pressure Regulators have threads in the cover, into which the adjustment screw is inserted. or Best Offer. 01. Location: Base of Fuel Distributor. Regulating Shaft Step on the accelerator pedal up to the kickdown. If you're performing this procedure due to a failed leakdown test, also compare the pressure to the failed leakdown test pressure. The Low needle is control pressure regulator, he should back it up with the standard test BEFORE he sells the customer on it. With a wide selection of fuel pumps for Mercedes-Benz 450SL, you can find the right one for you vehicle. I had a 450SL roadster 2 top in the 80s. Running fuel pressure- 42-43 psi at injector 11. Changes in vacuum or air pressure in the intake manifold varies the electrical resistance in the sensor, increasing or reducing the signal’s voltage to the computer. Remove the pressure Canister and fill with 250 mls of Yellow Fuel System Conditioner. I can hear the fuel injector's noise when the air sensor is depressed with the ignition key ON. The fuel pump looks fairly fresh too maybe about 10 years old. The regulating lever should rest against the fuel throttle stop of the valve. or Best Offer. After fuel pump and fresh gas, it started, but would not stay running. Take a fuel sample by opening Valve (F). Copper washers are included for a perfect seal. is designed to detect bad fuel pumps, bad pressure regulators, leaking injectors and clogged fuel filters. CTA Tools 3420 Fuel Injection Pressure Tester-Bosch K Jetronic C. The classic design was already present, even then. $399. pressure fuel inside! Okay, we have a high Control pressure, and WUR is the cause. 985 (K-Jetronic) to deliver different engine versions for Europe / standard, the USA (emission regulated) and low compression (NV= niederverdichtet) markets with lower fuel quality both in 450SL and 450SLC as well as with other numbers in W108 280 Engine Tools for Mercedes-Benz SL-Class (1972-1989) R107 C107: Fuel Pressure Testers, Thread Repair Car Stats: 1. Connect your fuel pressure tester. EFI Fuel Injector Ultrasonic Cleaning & Flow Testing (FOR 8 INJECTORS) $89. Bring your vehicle’s fuel system back to its top shape with this top-notch part. Is there black smoke and a smell of petrol? The primary regulator and warmup regulator can cause pressure loss but they don't leak fuel into the engine. They gum up and it's a safety feature that when car is in accident and/or roll over, when oil pressure drops (eng quits) power to fuel pump shuts off. Choosing a Mercedes was a smart choice, now maintaining it in top condition is a great choice! They are available for the following Mercedes 450SL years: 1975, 1974, 1973, 75, 74, 73. There should be a separation joint or a test port, where the pressure gauge attaches. The maximum displacement that can likely be supported by D-Jet is between 2. 5. Advance Auto Parts has 1 different Fuel Pressure Regulator Kit for your vehicle, ready for shipping or in-store pick up. 5 bar (14. Without question, one of the best checks for a faulty FPR is to check the fuel pressure at the rail. If you have a hard time finding the fuel pressure port (Schrader valve) on your Mercedes, start from one of the fuel injectors and follow the fuel rail. Source: Mercedes Medic Try www. A very sharp car back then. The pressure and output of the pump are controlled by a regulator. Remove the Schrader valve cap. The best part is, our Mercedes-Benz 450SL Fuel Pressure Regulator Kit products start from as little as $125. As you know, it is a mechanical (non-electrical) injection system. JIFETOR Fuel Injection Pump Pressure Tester Gauge Kit, Car Gasoline Gas Fuel Oil Injector Test Manometer Tool Set 0-140PSI, Universal for Auto Truck SUV Motorcycle ATV RV 4. When the engine is running it serves to deaden the noise of the electric fuel pump. This is what I did: 1. 1990 to 1992 300CE with CIS; 1990 to 1993 300SL with CIS; 1986 to 1991 420SEL with CIS 108 111 107 280SEL 280SE 450SEL 450SL 450SLC FUEL PRESSURE REGULATOR 0280160004. , including acceleration times 0-60 mph, 0-100 mph, 0-100 km/h, 0-200 km/h, quarter mile time, top speed, mileage and fuel economy, power-to-weight ratio, dimensions, drag coefficient, etc. 2 and 2. The smaller engined 380 SL replaced the 450SL from 1981 to 1985. Years of Manufacture: 1971 - 1980 Number Built: 66,298 Price at Introduction: 450SL Roadster: DM 36,630 Misaligned Tires: Tires that are low or out of alignment can lead to a drop in fuel efficiency. Notes : Fuel pump motor Condition : New Quantity Sold : Sold individually Recommended Use : OE Replacement Operation : Electric Fuel Sending Unit Included : without Fuel Sending Unit Pressure Sensor Included : without Pressure Sensor Product Fit : Direct Fit Prong Connector : 1 electrical connector; 2-prong pin connector Replaces OE Number : 580254942, 0020919701, 0580254942 Warranty : 1-year 3. Mercedes 450SL 1976, Fuel Tank Cap by Stant®. There is a ceiling pulley kit for this top. Testing the fuel pressure. Partsgeek offers replacements for the 190E, 560SL, 300E, 500SL, E320, 420SEL plus more. Vehicle has been in storage for about a year, I am told. 00. 7. Built from 1971 to 1980, the Mercedes Benz 450SL was a super sleek roadster that came stock with an impressive amount of power output especially for its time. 1975 Mercedes 450SL. eEuroparts. If you're looking for quality Mercedes-Benz 450SL fuel system parts, you've come to the right place. Buy OEM & Genuine parts with a Lifetime Warranty, Free Shipping and Unlimited 365 Day Returns. Dismantle as above, and clear any blockage found. TPS setting- . The dynamics of the pressure make it something I wouldn't want to screw with. $399. w116. com FREE DELIVERY possible on eligible purchases Mercedes 450 SL slc SE sel Fuel Injector Nozzle Holder (1/8) GENUINE r107 w116 (Fits: Mercedes-Benz 450SL) $14. Mercedes-Benz 450SL Diagnostic Tools parts online. See list below: The fuel accumulator maintains the pressure in the fuel system for a certain time after the engine has been switched off. 7. It includes a 3. I. S. $7. Damper is a bad location, as this is already behind pressure regulator in return line to tank. With the key on, engine off (KOEO), the factory manual says fuel pump pressure should be between 30 to 45 PSI for the 5. A secondary system carries excess fuel from the pressure regulator back to fuel tank. This R107 is offered with two tops, service records, and a clear Nevadatitle. is designed to detect bad fuel pumps, bad pressure regulators, leaking injectors and clogged fuel filters. 5-Inch (90-millimeter) gauge with dual calibration (5-145-PSI / 25-1,000-kPa), hose assembly and brass adapters. New Fuel Pump 4. 108 111 107 280SEL 280SE 450SEL 450SL 450SLC FUEL PRESSURE REGULATOR 0280160004. check the vacuum lines,and the vacuum advance,test the spark,and do a proper tune up including the fuel filter. Does not run, only after reading some of the responses here checked my crank-case, was full of fuel. or Best Offer. Find replacement parts and upgrades for your 1980 Mercedes-Benz 450SL. 8L straight-6 became an option for both the SL 100% pressure testing guarantees proper braking function on the vehicle. When it comes to your Mercedes-Benz 450SL, you want parts and products from only trusted brands. If you want to test whether it leaks, close the fuel line (if it sits at its end like in my MB 450SL). If pressure is low, you need to find the leak. Check fuel pressure, volume and quality. They did have a few teething problems but have proven to be very durable as long as they are treated and maintained properly. 22 - $601. Free shipping. After 20 minutes, note the fuel pressure and compare it to the specified value in FUEL-01. 9L 6 cylinder is 45 to 60 PSI. If you have access to a 0-100 psi fuel pressure gauge , check the fuel pressure at the rail using FUEL-01. Every Friction Choice Caliper consistently includes all hardware needed to ensure quick, convenient installation, while offering you the choice to install your own preferred grade of pads. Theses engines were more powerful and more fuel efficient. If you've verified the fuel pump works, and you've replaced the fuel filter, I would next want to check the Warm Up Regulator (badly named, because it controls much Mercedes Benz 450 SL Series 107 1971-1980 Roadster R107 Workshop Manuals and Specifications,1971,1972,1973,1974,1975,1976,1977,1978,1979,1980 Mercedes Benz 107 MB107. eurotec : Let me know if you have any questions. Mercedes Benz 450 SL FUEL INJECTOR RAILS LEFT & RIGHT 1980 Mercedes 450SL Electronic Control Unit Fuel Pressure Damper. 2 out of 5 stars 206 $36. 985 1976-1980 280SE 3. Buy OEM & Genuine parts with a Lifetime Warranty, Free Shipping and Unlimited 365 Day Returns. Sold from 1973 to 1980, the Mercedes-Benz 450SL has a fuel-injected V-8 engine which means the Mercedes-Benz SL fuel pump works under pressure and uses an electric fuel pump rather than a mechanical fuel pump. Have someone try to start your car while you feel whether every injector vibrates. Mercedes-Benz 450SL Cooling System parts online. The Complete Mercedes-Benz 450SL Technical Specifications. Touch the terminals (one at a time) of the harness connector with the test light. check the vacuum lines,and the vacuum advance,test the spark,and do a proper tune up including the fuel filter Immediately install a hose clamping device on the rubber portion of the fuel line downstream of the Fuel Pressure Regulator (FPR). Hope this helps. Filtration of the fuel occurs either in the fuel tank using a pickup screen or externally with a replaceable filter mounted in the fuel supply line. With these systems aging and parts needing to be replaced, it is a good time to look at the general function of this system and the various components. There's a Charles Probst book on Bosch FI that's always on e-bay. e. FUEL-01, Fuel Pressure - Checking Testing. 99. 1972-1980 Mercedes Benz 450 SL Instrument Cluster. I have a serious doubt that my problem is the warm up regulator though. 8 watching. 5-liter V8 paired with a three-speed automatic transmission. 3)Inspect the circuits of temperature sensor 2, pressure sensor,trigger points and injectors. 4. On the other hand, strictly speaking, having an incorrect control All specifications, performance and fuel economy data of Mercedes-Benz 450 SL (134 kW / 182 PS / 180 hp), edition of the year 1979 since September 1978 for North America U. Heavy-duty construction allows for strength and durability. Note the fuel pressure and the time that you installed the hose clamp. The Complete Mercedes-Benz 450SL Technical Specifications. Valve clearance- good 16. check the vacuum lines,and the vacuum advance,test the spark,and do a proper tune up including the fuel filter. The frequency valve's duty cycle is measured on a 0 to 100% scale. Hello people; Was called to look at this 1979 Mercedes Benz 450 SL. This is the start time for the leakdown test. Mercedes-Benz 450SL Fuel System Parts. New Leather Seats 8. com® maintains a large catalog of Mercedes-Benz 450SL fuel system parts at all times. Other solutions include increasing fuel pressure (up to a maximum of 34 to 35 psig), or adding additional ballast resistance to the head temperature sensor. warm up regulator is attached to the block, it has fuel lines that run into it, and as the motor warms up it it lowers the fuel pressure (or raises it) all it is a bimetallic wound up strip. Check fuel pressure (2. The parts and labor required for this service are Mercedes-Benz 450SL Check Engine Light is on Inspection costs between $80 and $90 on average. . Recently installed a new coil, points & resistors. the engine runs like its getting inconsistent amounts of fuel. Any test that fails to meet OEM specifications is repaired or replaced. If it is wrong the normal reason is either an internal fuel distributer restriction or one inside the EHA itself. 99. A JIFETOR Fuel Injection Pump Pressure Tester Gauge Kit, Car Gasoline Gas Fuel Oil Injector Test Manometer Tool Set 0-140PSI, Universal for Auto Truck SUV Motorcycle ATV RV 4. Locate your fuel pump test point, which is usually near the fuel injectors, and locate the point at which the pump hooks up with the filter injector rail. Because electronic injection systems have virtually supplanted old fuel delivery systems, modern Mercedes 450SL Fuel Pumps must pump fuel under pressure; they are therefore electronic. The Bosch K Jetronic system is a CIS setup - the injectors spray a constant stream of fuel when the fuel pressure goes high enough to open the spring-loaded valve in the injector. Defective Fuel Pump: Fuel delivery issues can drastically affect fuel efficiency. 4)If the above are good,do an injector flow test. The Mercedes 450SL Fuel Pump Relay is a unit contained in plastic, which has sprockets that attach to the car's ignition system. With the old pump the vehicle would start fine but was getting too much gas detected from the smell of the exhaust and developed white smoke after warm-up. Posted on Jul 14, 2009 The included hose and clamp adapter must be used when testing CIS fuel injectors from the years and models listed below: Since the testing requires less than 100 PSI pressure to test the spray pattern we have found this adapter works very well without leaking. Buy a 1979 Mercedes 450SL Electronic Control Unit at discount prices. 0L and 5. 00 shipping. Easy to use parts catalog. 99 Buy Mercedes 450 SL slc SE sel Fuel Injector Nozzle Holder (1/8) GENUINE r107 w116: Fuel Injectors - Amazon. - Nick at Pelican Parts 450 SL R107 (1975-86) PARTS CATALOG: Porsche: BMW 8. So as to sustain a proficient working vehicle, your Mercedes fuel pressure regulator needs to be in correct working form. BOSCH 060 WUR SPECS:Primary system pressure spec: 76-84 psiCold control pressure spec: 25-32 psiWarm control pressure spec: 49-55 psiAcceleration enrichment Having fuel issues and noticed the car running really rough and smoking. Fuel pressure from pump - 68 psi 10. Page 38: Catalytic Converter Cautions Catalytic Converter Cautions Fuel System. Electric fuel pumps produce higher pressure typically 10 to 50 PSI. 6. Tire Pressure For tire pressure table refer to fuel filler flap or last page. One of the terminals should make the test light glow, this is the injector power source coming from the computer. Check the system pressure and flow with the LB291/2F. A Mercedes 450SL Fuel Pump helps force liquid fuel from the gas tank to the vehicle's injection system, where it's mixed with air for use within the cylinders. 450sl 117. It was on my bucket list to own one for quite a while. Test for fuel pressure before starting the car for the first time during the day. I had to replace the. 2020 this pressure tank can now perform a cooling system pressure leak test as well . Open the manual valve on the gauge and let the fuel drain through the connected tube into an approved container. I have seen reports that the little metal gauze filters were deleted in late models, so if you have trouble clearing the restriction and believe it is caused by the filter, use your best judgment here. If the fuel pressure is too high or too low, it can cause drivability issues that are detrimental to your Expedition’s engine and emissions systems, as well as your wallet. Injector- Visually clean and bench tested and appears to flow good 13. 982 1973-1975 450SL 117. Then you should see a decrease in idle-run CO. after a month, part came in, I installed… Mercedes 450SL / 450SLC USA Built 1980, Fuel Injection Fuel Distributor O-Ring by Genuine®. If the regulator is on the fritz, the pressure will fluctuate As of Jan. Next step would be to perform a fuel pressure test. Mercedes-Benz 450 Sl Car Cover 1976 1977 test the fuel pressure. As we progress on our journey through the 1975 Mercedes-Benz 450SL, it is important to look at the D-Jetronic or D-Jet fuel injection system. Plus, our selection of 1980 Air, Fuel, Emission & Exhaust parts for your 450SL are some of the lowest in the market. I have been chasing a starting problem for several months. This is the start time for the leakdown test. By 1974, a fuel-injected 2. Normally a faulty fuel pressure regulator will result in a very high fuel pressure. S. Check the system pressure and flow with the LB291/2F. check the vacuum lines,and the vacuum advance,test the spark,and do a proper tune up including the fuel filter Jul 14, 2009 | Mercedes-Benz SL-Class Cars & Trucks 1 Answer SOURCE: My 1974 Merces 450sl keeps stalling. 0 kg/cm2). Mercedes 450SL 1975, Fuel Tank Sending Unit by URO Parts®. in Cummins L-10 Test for injector effective lubricants for the engine's high-pressure fuel 1975 Mercedes-Benz 450SL Parts and Accessories Fuel Filters; Transmission Filters; Tire Pressure Monitoring. 0L Powerstroke Diesel F-Series（F250 F350 F450 F550） E-Series 3. 8L V-8 engines. “ removed from a running 75 450 SL car, Fuel Pressure Regulators Fuel Injectors, MERCEDES-BENZ 450SL 1987 and newer all use electric fuel pumps, because of the introduction of electronic fuel injection. A defective fuel cap can cause your vehicle to fail an emissions test, and allow up to 22 gallons of gasoline to evaporate in one year, wasting your money and polluting the environment. 5 116. The shop installed a new fuel pump, accumulator and filter. How To Check Fuel Pressure. Posted on Feb 26, 2011 Twist off the fuel pressure test port cap and use a "T" connector to attach a pressure gauge to the fuel pressure valve. It includes a 3. Turn the ignition switch to the ON position. Check out free battery charging and engine diagnostic testing while you are in store. Electronic Ignition Point Upgrade 7. 2)Do a fuel pressure-volume test. SLC 350SL 450SL 450SLC 380SL 380SLC and 560SL. Originally would barely start and run. 7 psi = 1 bar) Accumulator- Large spring loaded diaphragm to keep fuel pressure up with engine off, also dampens pulses from the pump. It should be remembered that a cheap filter may not provide good filtration and hold up as well under the extremes of heat and pressures, allowing contaminants to circulate Produced from 1984 to 1993 these lighter weight aluminum head engines replaced the venerable cast iron 616 and 617 engines of the 1970's and early 1980's. Choose top quality brands Programa. Before replacing the regulator or removing the pressure gauge, reduce the pressure in the ring line by unplugging the starting valve and connecting it to battery voltage for 20 seconds. Checking the injectors is the next logical thing. The car would turn over but would not start, as though there was no spark. A defective fuel cap can cause your vehicle to fail an emissions test, and allow up to 22 gallons of gasoline to evaporate in one year, wasting your money and polluting the environment. Ignition System. The fuel pressure can be lost through leaking cold start injector, injectors or fuel distributor, these leak fuel into the inlet and give a hard to start rich mixture. The KOEO fuel pressure for the 4. SOURCE: My 1974 Merces 450sl keeps stalling. It should have read "Mercedes 450sl Gasoline Fuel Injected Engine Getting fuel to distributor But Won't Start". Electronic Fuel Injection. What do you. 99. Fuel Pump 17 Cold Start System 18 Warm-Up Regulator 19 System Pressure 22 Leakage Test 23 Testing Injectors 23 Comparative Test 24 Idle Speed and CO Adjustment 26 Mounting Pressure Tester 30 Component Repair Fuel Distributor Repair (911, 914) 32 Fuel Distributor Repair (928) 33 Fuel Pump Repair 34 Pressure Regulator Repair 35 It's to this Schrader valve that you'll connect a fuel pressure test gauge to, to check the fuel pump's pressure. Posted on Jul 14, 2009 Unplug the electrical connector from the fuel injector you want to test. com® also stocks every part we sell in our own warehouse, meaning that when we say we have a part in stock, we actually have it in stock. Starting in 1980, US cars were equipped with lambda control, which varied the air/fuel mixture based on feedback from an oxygen sensor. 6 out of 5 stars 12 2. Check the pressure gauge. New Ignition Wire Set + Coils 6. New Relays 5. Fuel Pump Cutoff Switch. There's a section at that website for the manuals. 4. 2)Do a fuel pressure-volume test. Free shipping. My local Mercedes Club technician finally traced the problem to the transistorized ignition control module (the car would start and run fine when a condenser was used in place of the module). 450sl fuel pressure test