Injector pump fault

olesmokie · Oct 13, 2014

I've had a intermittent problem with my p38 dse where there seems to be no power for a few seconds then is better. This happens maybe once a week.

Anyway I took it to my local I independent garage and he plugged in his diagnostics. And cleared a injector pump fault.

After driving some more the intermittent fault happened again. To it back to the garage again and the fault has come back.

So my question is given the cost of replacing the injector pump is there anything I can test or do to ensure that it is a mechanical fault with the pump.

And ideas gratefully received.

Littelwill · Oct 13, 2014

What was the fault code?

W

olesmokie · Oct 13, 2014

Dunno I asked but say it doesn't give codes. Can't remember what system they have. But he said it's updated daily from London. I have a Namocom will check what that says tomorrow.

Littelwill · Oct 13, 2014

Ok, it might be the fuel quantity solenoid or your needle lift sensor to start with do they sound like what you friend was talking about?

olesmokie · Oct 14, 2014

Nanocom not working f33 fused. Just wanted to check fuses 1 - 5 are spares

wammers · Oct 14, 2014

olesmokie said:
Nanocom not working f33 fused. Just wanted to check fuses 1 - 5 are spares

There are spare fuses to the right hand side of the engine bay fuse box fuse 33 should be 5 amps. Fuses 1 to 5 are not in the engine bay. Unless i misunderstand what you are asking.

olesmokie · Oct 14, 2014

Sorry yes that's what meant the ones next to 44. I miss read it it say S not 5. Doh

wammers · Oct 14, 2014

olesmokie said:
Sorry yes that's what meant the ones next to 44. I miss read it it say S not 5. Doh

Yes S is Spare.

olesmokie · Oct 14, 2014

Yes thanx for that s for spare not for 5

olesmokie · Oct 14, 2014

Not really sure how to use the nanocom. But here is a pic of an error.

ImageUploadedByTapatalk1413288127.923395.jpg

olesmokie · Oct 14, 2014

Here are some reading after driving abou 15 miles. It taken while stopped and idling. Timing mod. Of 76 I thought was a tad high. From reading other threads should be about 50 -+ 5. Does this help to pin point the problem. Can it be adjusted.

ImageUploadedByTapatalk1413301029.540835.jpg

ImageUploadedByTapatalk1413301038.639539.jpg

Datatek · Oct 14, 2014

Modulation is high, timing chains worn is the usual answer. Fuel flow out of range fault may be the quantity servo in the FIP but Wammers is the expert.

wammers · Oct 14, 2014

Modulation is a tad high static slightly retarded. Chain stretch. As for the invalid fault. It is happening on cranking at 56 RPM don't know why that should be happening at that speed. Fuel flow out of range is feedback pot telling ECU that quantity servo is fuelling higher or lower than that normally associated with the RPM/engine load. Could be an impending quantity servo problem. Refurbed pumps are around the £600.00 mark.

olesmokie · Oct 14, 2014

So are you saying that timing chain needs replacing and fip needs a referb

wammers · Oct 14, 2014

olesmokie said:
So are you saying that timing chain needs replacing and fip needs a referb

If the pump timing has never been redone before 76% modulation is not a lot of stretch. The fuel quantity fault could just be down to a bad connection on cranking. If it was saying that at normal engine speeds then you would have a major problem. The trick is noticing it says "Invalid fault". If your car has done upwards of 100,000 miles and the chains have never been checked it's time to do it. A busted chain is big trouble. Pump cost was just for info.

olesmokie · Oct 14, 2014

Yes it's 130k. I'm sure the timing chain has never been done.

Would you recommend me getting the cam, pump and crank sprocket done at the same time?

The local garage quoted me £750 + 2.5 hr labour for the fip. Was looking at secondhand ones for £170. But wanted to be sure that it was a pump issue first. I think the timing chain is a good place to start. I'm guessing that if he changed the pump he would have spotted the chain was stretched. Cheers wammers

wammers · Oct 14, 2014

olesmokie said:
Yes it's 130k. I'm sure the timing chain has never been done.

Would you recommend me getting the cam, pump and crank sprocket done at the same time?

The local garage quoted me £750 + 2.5 hr labour for the fip. Was looking at secondhand ones for £170. But wanted to be sure that it was a pump issue first. I think the timing chain is a good place to start. I'm guessing that if he changed the pump he would have spotted the chain was stretched. Cheers wammers

There are two chains lower one that drives the pump and also an upper one that drives the camshaft off the pump sprocket. When i changed mine bottom chain was worn but reasonable, top chain was close to breaking on a couple of links. Changing them is quite a big job. Cam sprocket and pump sprocket are easy to get hold of, crank sprocket is not. See BMW part number in my "How to". Injection pump from diesel Jones are about £595 exchange. 2.5 hrs is a bit tight for changing a pump.

olesmokie · Oct 15, 2014

Ok thanks. You say it's quite big job; any idea how much labour a garage would quote? I'll checkout diesel jones.

olesmokie · Oct 15, 2014

Or Can I do the timing chain myself. Do I need special tools?

wammers · Oct 15, 2014

olesmokie said:
Or Can I do the timing chain myself. Do I need special tools?

Yes you need special tools. Can be done yourself if you are competent you need to know what you are doing.

Injector pump fault

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