Question about 1994 BMW 7 Series

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My BMW 7 Series Car cranks and turning over but will not start

My 1994 BMW 7 Series car cranks and turning over but will not start. Towed my car home a couple of times and tried to start my car and it started. But it does not start now? It seems to have a intermitting proublem. I did pull the fuel line to the fuel-rail off and im not getting any gas at this time just like the other times. If it is the fuel pump thats in the gas tank, can I take it out from the trunk, or do I have to drop the gas tank. Please help

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  • BMW Master
  • 23,154 Answers

I would check the power to the pumps first. May save you a lot of time.

Posted on Jun 20, 2017

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Posted on Jan 02, 2017

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SOURCE: BMW 740i Stalling Issue (Fuel Pump/Line??)

To save you all the hassle check your spark plugs & distributor first if you are getting a spark. To do that first take out the number one spark plug wire it will be the one closest to the distributor. Second take out the spark plug, then put the spark plug in the spark plug wire. Turn on the engine u should see a spark at the spark plug if your distributor is ok and spark plug. If not replace your distributor.

Posted on Jan 21, 2009

  • 145 Answers

SOURCE: BMW 525i will not start

There are six fuse panels for an E39 BMW
Fuses F1 - F45, fuse panel 1, glove compartment. Twist white plastic retainers 90 degrees and pull down from top of glove compartment.
Fuse 31 (10 amp) protects fuel pump relay(K96)

Fuses F46 - F6, fuse panel 2, trunk located behind right side luggage compartment interior panel.
Fuse 54 (15 amp) protects fuel pump relay(K96)

Before I would do any of the following, I would check the above fuses and put a bottle of HEET into the fuel tank. Fuel filter changing is not hard, but it will take you about an hour.
The fuel pump is another story (BMW has a special spanner wrench(16 1 020) to remove and install the threaded collar.

E39 BMW use a two-lobed fuel tank(think saddle bag like). Each with its own fuel level sending unit that has a float connected to a variable resistance wiper contact. To equalize fuel level between the two tank lobes, a siphon pump is installed in the left lobe. The resistances need to be approximately the same. The fuel pump is on the right lobe under the tank sending unit beneath the threaded collar at the top of the fuel tank which is accessed by removing the rear seat cushion. WARNING When removing the fuel level sender or the fuel pump, the fuel tank should be drained to 1/4 capacity or below. The fuel in the fuel line is under pressure (45-75 psi). Always unscrew the fuel tank cap to release pressure in the tank before working on the tank or lines. Disconnect battery negative cable.

The fuel filter is located beneath the center of the car near the driver's seat usually under a protective metal cover held on by small screws. Not hard to replace but car will need to be on jack stands and 1/4 tank or less of fuel in the tank. Definitely wear safety goggles or face shield as the fuel will come out on face. Have a fuel catch pan under the filter. Clamp the fuel line before and after the fuel filter(long metal cylinder) before loosening hose clamps. Loosen center clamping bracket and hose clamps on either end of filter. [Some have an inline fuel pressure regulator.(Remove vacuum hose, pull out locking clip, remove fuel pressure regulator).]
Drain fuel from inlet side of filter and check fuel for rust moisture or other contaminats.
Installation is reverse. When installing fuel filter, ensure fuel flow direction arrow points to front. Should have at least 5 liters of fuel in tank before restarting. The fuel pump will be damaged if run without fuel.
PT Stanley

Posted on Jan 23, 2009

  • 1 Answer

SOURCE: BMW 740i Stalling Issue (Fuel Pump/Line??)

the problem is your sensor is bad . the sensor for for the fuel pump is not sending power.

Posted on Mar 20, 2009

  • 713 Answers

SOURCE: car steering wheel locked; car won't start

If this is a floor shifter or center console shifter there is actually a lock release next to the shifter. Look next to the shifter handle and you should see a small square plug in the console remove the plug and you will see a little white button in it this is the shifter release push it and you can move the shifter.

Posted on Sep 20, 2009

mlapres
  • 757 Answers

SOURCE: 2003 BMW 325i - Car won't start. It will crank the (rrr rrr rrr)

Get a DTC scanner and see what it says...in the meantime, check that fuel pump relay and fuel pump. The humming sound is probably the heater blower motor or part of the HVAC system winding down after disconnecting from power.

Posted on Dec 16, 2009

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