Starting problems

[veilthe30]

My car had being playing up in the last few days taking its time to start and a having a small misfire when it did start I have fitted a new fuel pump to day but it's still not starting and the all the relays are fine so could it be the crank sensors? Any help would be much appreciated

Thanks

[Grrrmachine]

1) What car?

2) From hot or cold?

3) Is it cranking, or nothing happens when you turn the key?

4) When it doesn't start, have you checked for spark?

[veilthe30]

sorry its a 316i it cranks over and sparks

thanks

[veilthe30]

really need help with this now it seems no power is geting to the fuel pump i have checked all the fuses and realys there all fine any help would be good

thanks

[Grrrmachine]

What year 316i? There's a huge difference between a 1987 and a 1988.

And how have you confirmed that power isn't getting to the fuel pump?

[veilthe30]

its a 92 and i followed the guide from the wiki with the light bulb when i turn it over its not up i have checked the wires for any splits and it all seems fine


thanks

[Grrrmachine]

If you're sure you're getting spark when you're not getting fuel, then try taking out the fuel pump relay and bridging its terminals.

http://www.e30zone.net/e30zonewiki/inde ... Pump_Relay

If that works, then your fuel pump relay was shot.

[veilthe30]

bridged it and still nothing and i am still getting a spark

thanks

[Grrrmachine]

Final thing is to swap the fuse in case it's soft-blown, and do a continuity test on the fuel pump wire.

[veilthe30]

did that and still nothing

[Brianmoooore]

Use the bulb to check that there's power at pin 30 of the fuel pump relay's socket (connect bulb between pin 30 and earth).
If the bulb lights, fit a wire link between pins 30 and 87 of the relay base, and use the bulb to check for power at fuse 11 in the fusebox. With most designs of fuses you can touch the bulb's wire onto the fuse wire with the fuse in situ. Otherwise, remove the fuse and push the wire from the bulb into the inner socket.
If the bulb lights here, connect the bulb between the green/purple wire at the pump's plug and earth.

[veilthe30]

ok i will try this in the morning

thanks