Question about 1987 Mercedes-Benz 300-Class

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Not getting enuff fuel to start but pump checked out ok

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Have a fuel pressure test done on the fuel manifold and check filter and regulator operation.

Posted on Nov 17, 2013


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For Diesels with 'common rails' you can take same approach for fuel. No ignition testing possible. The diesel fuel pump still needs battery power. It will make some sound when IGN is on. If not, check ALL fuses and relays.

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1994 Mazda PU Truck sometimes won't start if shutoff for 5-10 minutes.. Several tries later, it will start. spark seems ok, it gets enough fuel for a second, but then poops out. fuel pump shuto

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Car will not start,when started and put into drive it dies.

first of all. be sure fuel filter is ok! there should be a fuel pressure fitting under hood at fuel rail. just press this valve, and see if any fuel is getting to engine. it looks like a tire valve. the only other way to check is to remove the pump. hope this helps you. also be sure the fuel pump relay is ok and not shutting pump down. good-day !

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No start. change fuel pump and runs perfectly for one day. next day starts drives out of the driveway and sputters and stalls down the road. checked the fuel censor. ok. fuel regulator. ok. clean the...

Get the o2 sensor checked.The o2 sensor before and after catalytic converter.Also check the fuel pump relay in the engine compartment fuse box under hood.Try cleaning the sensor, then check.If its getting to much fuel.then it can be problem with o2 sensor.Or fuel pressure regulator.Regulator is checked ok, so get the o2 sensor checked and replaced.----------------

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replcace filter? ,you say you have good pressure.have you checked your pressure with a guage? i had pressure but not enuff,really 96 4.3 vortex needs to be pretty high(check requierments at parts store) fuel pump is in the tank, cheapest one @ 235.00

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Put key on moter off i get a two second shot of power to fuel pump. it is enuff to start warm engine. but when cold have to to key twice for moter to run . with key in start there is power to pump and when...

I guess you need to check fuel pressure to see if it is bleeding off. If it is than the two common causes are a leaking fuel pressure regulator or a bad fuel pump.

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We have trouble filling the gas tank on our 2002 echo. The pump keeps shutting off

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