Fuel Pump.... The Saga Continues

[Whitterz]

Hi there, Picked my E30 316i up yesterday, told it needed a fuel pump, got it home last nite, had a look this morning, checked it by, by-passing the relay still nothing, No Noise, No petrol coming through.... Whats the easiest way to change the pump, and any other advice ??

Thanks

Whitterz

[georob]

what year is it?

[Whitterz]

1990' H Reg mate

[georob]

lift the back seat, find the pump under the underlay, undo bolts/ screws/ pipes, twist slightly to remove iirc

[Whitterz]

If i undo all the pipes, will petrol piss out ?

[smithy318i]

you should test it first to see if its broken.
connect the pump directly to 12 Volts.
the green wire is +
the brown wire is -

[Whitterz]

ok mate i will do.....

[smithy318i]

If i undo all the pipes, will petrol piss out ?

yes... but if the pump isnt working, the system shouldnt be under pressure. (Normal pressure is 3 Bar)

[Whitterz]

its got a 1/4 tank of petty, should i Syphon that out first

[smithy318i]

no need.
only the feed pipe is under pressure. ( thats the one on the left BTW )

[Brianmoooore]

You have to undo the four nuts on the top of the fuel pump assembly and pull out the level sender first, otherwise it won't come out through the hole.
Smoking is not recommended while doing this job!

[Whitterz]

Cheers guys, thanks for the advice and help

[Whitterz]

Ive got the sender out, and undone the fuel pipes, but there doesnt seem to be any slack in the pipes to get them off ??? also, how would u recomend twisting the fuel pump, i dont want to hit it with a screwdriver, because it might cause a spark, and be BYE BYE Mr Whitterz

[jpgreenwood]

Ive just replaced mine and it took 10 mins from old one out to new one in. The pipes will pull off. Just have a rag at hand to wipe up the residue fuel in the pipes. unless they are perished then just wrestle them off. My pump twisted out by hand, just like changing a light bulb. I got a re-con pump from bmbitz (Ԛ£55 delivered). however, my car has given up again and will not start. It turns over but wont fire. I had an original problem of a stuck airflow meter which was rectified but not replaced. I think this may have led to the fuel pump giving up. Now it wont start again and i,m hoping its something simple to fix. Does anyone know how Ican diagnose this problem?

[Whitterz]

RIGHTY THEN GUYS.......

........Ive just been down the car, and connected the Fuel pump upto a battery, and its working ( the fuel pump ) i cant turn the car over bcoz it is flat itself...... Heres a pic of the fuse box, is this right ??? Please help me



Thanks

WhitterzԚ┞¢

[DanThe]

Fuel pump relays not in there mate, it is under the plastic cover that runs along the bulkhead

[Whitterz]

where abouts pal ?? hard to get at ???

[Chris-W]

There's a black plastic cowling running along the bulkhead, pull it off and you will see two relays - the nearside one (orange) is for the fuel pump.

[Whitterz]

Chris and Dan, cheers lads...... Ive just been down to the car in the dark with the van, whipped the cowling out, and connected to wires in to bypass the relay and hurray the fuel pump is working, tried to jump start it.... but my Jump Leads are shit, and cudnt get any power thru, but hey least the fuel pump is working, ive got a battery on charge, and hopefully tommorow it'll start

[DanThe]

Great stuff mate

[Whitterz]

Thanks to Chris-W too, getting me a relay in the post

[jpgreenwood]

so is the original fault with the pump or the relay? If my car has the same problem (wont start) could it be the relay? Is there a way of testing this?

[Whitterz]

Hopefully, as long as when i turn the key tommorow it starts with the charged battery...

....When u turn the key... can u hear the fuel pump engage ?

[Whitterz]

I am a Plonker..... Last nite i thought the battery was completely Flat, so i left the relay Bypass wire in, Went down to the car after work @ 2pm, plugged in the new battery, and plugged the bypass wire back in.... Nothing from the fuel pump, wired it to the battery.... Nothing, I removed the fuel pump, and its fried now i still need a fuel pump

Ahh well..... Maybe this was the cause of the relay going too.....

Least i know it has been replaced

[eun]

it will be on its way to you as soon as the cheque arrives

probably tomorrow dude

[Whitterz]

Nice one pal

[Whitterz]

Got my new fuel pump this morning, Plumbed it all in and nothing, Wired the fuel pump direct to the pump, there was powering getting to it, But the fuel pump wasnt doin anything at all..... just tiny clicks

Gettin pissed off now !!

[Whitterz]

ITS RUNNING wehey, running high revs, must be bcoz it aint been run for 3months, must be auto choke

Least its running now woohoo

[Whitterz]

...and i thought my troubles were over

Took it for a spin out, went to the petrol station, put 10quid in, went 500metres and it cut out again, wont start, and i had to walk home

[smithy318i]

it could just be a blocked filter at the bottom of the pump.

[mancs_joker]

i had probs with my 316 coz of the auto choke would start first time every morning and cut out 10 mins later never to start again that day

[andyp]

ok ive had this sort of problem before on a 318is, if you connect the fuel pump direct to the battery and it starts working put original wires back on drive it and at some point it cuts out with out starting again look at the alarm,immobilizer as this is wired/cut into the fuel line wires, if you have one of these fitted disconnect it and rejoin the wires and try again.

[Whitterz]

it aint got an immoboliser or alarm pal, i tell ya what tho, im gettin fed up !!!

[andyp]

hang on. if you run a wire from the battery direct to the pump will the pump work and car start.

[Whitterz]

hang on. if you run a wire from the battery direct to the pump will the pump work and car start.

yes and thats why i replaced the relay, then it worked, but now it wont the relay must be fucked again