Question about 1989 Mercedes-Benz 300-Class
It backfires, acts like not getting gas with hesitating, then dies. Backfires when trying to restart. let it sit and starts but still jerks. Had the catalytic converters replaced along with new wires, distributor cap, and tuned up the car. Went home and it died.
Hy i have the same problem bot i replace the fuel pump whith filter start for like 3 seconds and shots off
Posted on Feb 16, 2013
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Posted on Jan 02, 2017
there might be a helper pump in the tank also and after 5 minute of running it needs help getting the fuel to the primary pump that you have jumped out under the body near the rear tire and it stalls. both pumps are controlled by that relay so whatever is stopping the first one is probably stopping the second one!
i had one in my shop once and it would run fine for days then out of no where it would die and not run! the socket that the relay sit's in behind the battery was bad , the pins were wreck so i changed that and then it was fine for a while then did it again afer tracing that harness all the way back i found several wires broke and rubbed through! it wasn't easy it was burried and had to open the man harness right up wide and took along time! hopefully this help in some way!
Posted on Sep 18, 2009
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Removal & Installation The need to work as cleanly as possible cannot be over-emphasized. Even the smallest amount of dirt, if allowed into the fuel pressure regulator and/or the fuel rail, will find its way to the fuel injectors. The nozzle openings of the injectors are very small. Keep hands and tools clean. Clean the areas to be disconnected with a suitable solvent. Carefully cover open fittings and connections to keep out foreign material. Dirt in the injectors almost guarantees a clogged fuel injector and engine performance problems.
3.4L (VIN E) Engines
Fig. Exploded view of the fuel pressure regulator mounting-3.4L (VIN E) engines
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