Question about 1994 BMW 5 Series

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Fuel pump not pumping or priming - 1994 BMW 5 Series

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Fist check fuel filter and make sure it isnt just clogged. If not you will have to replace fuel pump. my dad had his replaced on his 1995 blazer and it cost over 1000 dollars but he didnt shop around. Make sure you shop around if you go to a big fancy shop you will be paying for there over head. You would be suprised the differance in prices you will get if you just shop around a little.

Posted on Sep 24, 2010

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Posted on Jan 02, 2017

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Will Vaseline lock the engine if you prime the fuel pump with it on a 2007 grand prix


There is no need to prime the pump with anything on a 2007 Grand Prix. The pump is submerged in the fuel tank and will push fuel to the engine without priming.

Dec 22, 2016 | 2007 Pontiac Grand Prix

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I have to prime fuel pump before I start the engine. What can cause this. Brand new fuel pump. 1999 GM yukon


how do you prime an electric fuel pump thats buried inside a fuel tank ---are you getting fuel to the throttle body --is pump turning on --retest pump new doesnt mean free from defects if this is the first replacement pump for vehicle was the connection to pump upgraded /changed out [problem with connection corrosion and damage would incur causing pump failure or non operation of pump ]also check lines are not kinked and pump installed correctly

Oct 19, 2016 | Cars & Trucks

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Car has been sitting up and will not start now. It seems to not be getting gas and I do not know how to prime a fuel injection system. Any help appreciated.


There is only a few cars fitted with an ancient petrol injection system that needed any priming.

Diesel engines mostly need the injection system priming but petrol injection systems do not.

Lots of cars use a system where the fuel pump runs for a couple of seconds when the ignition is switched on and that is all the time it takes to prime the fuel system. After a couple of seconds the fuel pump switches off and waits to restart when the engine is cranked.

As priming the system takes only a couple of seconds some manufacturers don't bother with the brief priming run of the pump and just have the pump start when cranking.

Could be faulty supply, fuse, pump relay or the pump itself.
If the car is fitted with an immobiliser, perhaps that is the problem.

May 07, 2016 | 1998 Mercury Mystique

1 Answer

When my fuel pump didn't turn on, my truck wouldn't start, if it did turn on it started right up. I replaced the fuel pump and it starts every time, but the fuel pump doesn't turn on every time. Is...


the fuel pump don't turn on every time . first when the pump as prime or if system is prime the pump will not turn on
the PCM give a ground to fuel pump relay for 2 sec and while the engine is cranking the pump is running all the time.
but pcm don't prime each time

Oct 10, 2013 | 1998 Chevrolet K1500

1 Answer

New fuel pump won't prime. No fuel from gas tank to engie. Lines are clear.


The pump works without priming anything. If the tank is vented, and you have fuel in the tank, and the pump is installed correctly, it should pump fuel out.
Are you sure the pump is getting power and ground ?

Jun 24, 2013 | Mazda Protege Cars & Trucks

1 Answer

Isuzu kb 280 dt got a fuel starvation problem after it stands for a few days, when i pump the prime pump on top of fuel filter the problem is gon.


It could either be a fuel pipe between your prime pump and injector pump that sucks air so your diesel flows back into your fuel tank. Or you need to replace the prime pump.There is a rubber diaphragm in the prime pump that gets worn. Unfortunately need to buy a new prime pump. A simple sollution is to fit a non return valve to your fuel line. That need to be connected between the prime pump and fuel tank. Hope it helps. Blessings

Nov 09, 2012 | Isuzu Rodeo Sport Cars & Trucks

1 Answer

I have a 1989 iroc camero that will not start.it has a throttle body carb and is a 305.the fuel pump works fine.the car will start if you prime it,but otherwise it wont fire at all.it has power on one wire...


Although you Say the Fuel Pump is Fine, What you Discribe is A NO FUEL Problem If it Starts When Priming and Does Not Without Prime this IS a Fuel Pump Problem NOTE: If you HEAR the Fuel Pump this only Indicates that the MOTOR that Drives the Fuel Pump Works , A Fuel Puessure Test Will Determine if your Fuel Pump In FACT DOES Work.

Apr 18, 2010 | 1989 Chevrolet Camaro

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