Drove the car this morning took the mrs to work it wAs fine went to pick her up about 12.00 then was going to the bank and won't start but the engine is
ticking over but it won't start help it's a 87 325i cabriolet!!!! Any help will be good thanks !!!!!
It won't start!!!! Help!!!
Moderator: martauto
take the back seat up and the small black panel, put your hand on the fuel pump, if it works you'll feel it, just recently had to change mine. people say you can hear it but i cant hear it (and no i'm not 75
)

-
helmi25cab
- E30 Zone Newbie

- Posts: 108
- Joined: Tue Dec 16, 2008 11:00 pm
Okay will try tomorrow!!!
- Brianmoooore
- E30 Zone Team Member

- Posts: 49358
- Joined: Mon Jan 10, 2005 11:00 pm
To check the fuel pump, first check fuse 11 is OK, then pull out the fuel pump relay and link together pins 30 and 87 of its base. This should make it run continuously, even without the ignition switch being on, and will easily be heard (if it's OK), without the noise of the engine masking it.
-
helmi25cab
- E30 Zone Newbie

- Posts: 108
- Joined: Tue Dec 16, 2008 11:00 pm
Quick update have check the fuel pump don't think it's that tested all the terminal but the second terminal with 2 pins don't seem to be getting a feed. I take it one side is + and - does the - have to have to have power? so run a wire from the bat to the connection at the pump then the pump started to spin or buzz but when trayed to start no luck then went to replaced the fuel filter still no luck anyone has an idea what it could have gone wrong as don't want to replace the pump and find it's not that! Put enough petrol please help thanks guys for your advices helmi
- Brianmoooore
- E30 Zone Team Member

- Posts: 49358
- Joined: Mon Jan 10, 2005 11:00 pm
Does the pump run if you do exactly what I stated in my last post?
Do you have sparks at a spark plug when cranking?
Do you have sparks at a spark plug when cranking?
-
helmi25cab
- E30 Zone Newbie

- Posts: 108
- Joined: Tue Dec 16, 2008 11:00 pm
Or forgot to say all the fuses are okay and relays as well. Just can't think of any thing else as my mechanics skills are not all that bit I get buy sometimes.
-
Grrrmachine
- E30 Zone Wiki / Team Member

- Posts: 8043
- Joined: Sat Feb 09, 2008 11:00 pm
- Location: Warsaw, Poland
If you're really not good with electrics, take out Fuse 11, crank the engine for a bit, then disconnect the rubber fuel line from the injector rail (it's at the end closest to the bulkhead) and pop the end of the hose into a bottle. Stick Fuse 11 back in, crank the car for a few seconds and see if you get fuel into the bottle. If you do, your fuel system is working.
There are reasons not to test the fuel system like this (risk of spraying fuel everywhere being one) but a screwdriver on a jubilee clip is all it takes.
There are reasons not to test the fuel system like this (risk of spraying fuel everywhere being one) but a screwdriver on a jubilee clip is all it takes.
-
helmi25cab
- E30 Zone Newbie

- Posts: 108
- Joined: Tue Dec 16, 2008 11:00 pm
Yes it run with your methods what next
- Brianmoooore
- E30 Zone Team Member

- Posts: 49358
- Joined: Mon Jan 10, 2005 11:00 pm
Brianmoooore wrote: Do you have sparks at a spark plug when cranking?


