1.9tdi Diesel Fuel Feed Problem 'r' Reg

[gregers]

another thought,you havnt got water in the ecu under the passenger seat by any chance???

[junky]

 

Battery volts across pos and neg terminals reads 11.75v with ignition off.

Ign on and connected across battery neg and solenoid reads 10.5v, when turning over the engine the volts drops down to 8v ish, its a bit erradic.

 

 

Its a duff/flat battery you got there and maybe thats been the problem all along. :wacko: Solenoids only work within a narrow voltage range.

 

BTW if you remove the piston/spring you'll probably find you cant turn the engine off! Make sure you dont get any dirt in there either......

Yeah, probably could do with charging now after all the attempts to unsuccessfully start it up. Shall try jump starting from my car first!

I shall be manually feeding fuel through so it will cut out just as soon as I deprieve it off fuel so thats not a problem and had already thought of that, thanks though as I could have overlooked it.

Have already cleaned around the cos and taken care not to get dirt in the fuel system.

Cheers

[junky]

Have you thought as 90% of all faults originate at THE ENGINE MANAGEMENT UNIT (EMU)

Diconect the battery lesve for afew minutes,

put back and try again.

Could be the security system is acting up maybe the immobilisor hah engaged.

Just an obscure thought

Bob Hill

Thanks Bob

Intend on charging battery later but as that would also clear the ecu memory as well I/we won't know which cured the fault, battery charged or emu memory cleared. So first I am going to jump start the car from mine in hope that the battery was at fault all along. Well, it may be that I end up removing battery anyway for a good long charge so may never know for sure but shall try in that order and see how things go.

Thankyou.

[junky]

another thought,you havnt got water in the ecu under the passenger seat by any chance???

Well, isn't that a horrid thought, shall have a look later and let you know, meanwhile I hope not!

Thanks

[bhbobhill]

Don't forget you may have to bleed the fuel system where fuel deprivation has occured at the injecters.

Bob Hill

[junky]

Don't forget you may have to bleed the fuel system where fuel deprivation has occured at the injecters.

Bob Hill

You mean undo each injector nut in turn whilst cranking and tighten up once fuel starts to come through. Sure thing.

[bhbobhill]

I bet this turns out to be something simple and easy to rectify, but nevertheless something to put in the fault book. Do we have a common fault book and if not why not?

This could save us many spanner hours, frustration and pound notes.

Regards

Bob Hill

[seatkid]

I bet this turns out to be something simple and easy to rectify, but nevertheless something to put in the fault book. Do we have a common fault book and if not why not?

This could save us many spanner hours, frustration and pound notes.

Regards

Bob Hill

Yeah its called the Faqs, Common Questions And Solutions section

[junky]

An update on progress so far!

 

Put jump leads from my car onto the Galaxy and fuel was being drawn up at a good rate so decided to re-connect pump line back up to filter, having had the filter removed and drained I had to re-fill with diesel, anyway once we tried starting the car, still on jump leads, it tries to fire up and is drawing fuel up but there is air in the system and although I purged the air at each injector there is still air between the pump and the filter.

Pipes have been re-connected back to the filter tight and have checked the fuel pipes and they are OK.

Having looked under the car there are signs of fuel leakage, underside of car on drivers side near the front wheel. So I'm going to have to trace back the fuel feed pipe from the tank up to the filter and the return pipe from the filter to the tank to try and find the leak.

Any ideas how the pipe which is plastic around the leaking area can be repaired? What repair is MOT worthy?

cut a section out and fit new piece or bandage with something, or heat gun glue it? I have no idea!

 

So, conclusions!

It was a cold morning so may have been battery not having enough power to properly crank and provide adequate volts to the solenoid, probably other ancillaries too! Or could be constant cranking the engine trying to start it when there was no fuel being fed to the pump that flattened the battery. (I wasn't there so I don't know for sure!)

Probably removing the solenoid and re-fitting had no bearing whatsoever on the pump now drawing fuel as its still doing the same as before but now theres fuel in the filter, because I put it in there, fuel is being sucked up by the pump but mostly air.

 

So, off to find this leak! Any pointers how to get acsess or any common known faults with the fuel line?

Thanks again everyone!!!

[junky]

I bet this turns out to be something simple and easy to rectify, but nevertheless something to put in the fault book. Do we have a common fault book and if not why not?

This could save us many spanner hours, frustration and pound notes.

Regards

Bob Hill

Yeah its called the Faqs, Common Questions And Solutions section

Yes, but why don't the links work?

 

Maybe you need to be a Gold Member! how do I become one?

Edited January 29, 2012 by junky

[seatkid]

Yes, but why don't the links work?

 

Maybe you need to be a Gold Member! how do I become one?

 

You are probably using Internet Explorer 8+, this forum and many other forums dont work correctly with Internet Explorer. Do yourself a favour and install Firefox, Google Chrome or Opera and see what the internat should really look like! (With adblock plus installed cutting out all those ads!)

[seatkid]

 

So, off to find this leak! Any pointers how to get acsess or any common known faults with the fuel line?

Thanks again everyone!!!

When I had a leak it was from the fuel filter drain tap, did you remove it completely. Chances are you put it back in cross thread. I tightened mine so much, it snapped while driving down the road spilling all the diesel and stopping the car.

 

I dont think you need to bleed anything in the fuel system. It does take a fair bit of cranking until all the air is purged. Just keep the starter going while its hiccupps and splutters until you can finally rev the engine.

[bhbobhill]

Don't forget you may have to bleed the fuel system where fuel deprivation has occured at the injecters.

Bob Hill

You mean undo each injector nut in turn whilst cranking and tighten up once fuel starts to come through. Sure thing.

By the sound of it you seem to have found the problem.

Usually you only have to do one injecter to get the fuel past the injecter pump the rest then work.

Good luck

Bob Hill

[zorgman]

ah well a simple flat battery good job i told him to measure it. as for the leak on pipe its a case of visual inspection to find it.

[zorgman]

ah well a simple flat battery good job i told him to measure it. as for the leak on pipe its a case of visual inspection to find it.

[junky]

Don't forget you may have to bleed the fuel system where fuel deprivation has occured at the injecters.

Bob Hill

You mean undo each injector nut in turn whilst cranking and tighten up once fuel starts to come through. Sure thing.

By the sound of it you seem to have found the problem.

Usually you only have to do one injecter to get the fuel past the injecter pump the rest then work.

Good luck

Bob Hill

OK, thanks. I'll remember that for next time, if and when then happens.

Thanks for your help.

[junky]

ah well a simple flat battery good job i told him to measure it. as for the leak on pipe its a case of visual inspection to find it.

You certainly did! and as it happens charging the battery or jump leads was going to be my next port of call at that point as I was certain the battery power was dropping but didn't think it was that low.

Thought it was going to be a case of just tracing back the pipe work, shall have to do that in the week, getting dark now. Out of interest there is a recall on fuel pipes rubbing against the air conditioning low pressure suction pipe, so shall look into that one and locate the air con pipe and ring the dealer.

Thanks for your help!

[junky]

 

So, off to find this leak! Any pointers how to get acsess or any common known faults with the fuel line?

Thanks again everyone!!!

When I had a leak it was from the fuel filter drain tap, did you remove it completely. Chances are you put it back in cross thread. I tightened mine so much, it snapped while driving down the road spilling all the diesel and stopping the car.

 

I dont think you need to bleed anything in the fuel system. It does take a fair bit of cranking until all the air is purged. Just keep the starter going while its hiccupps and splutters until you can finally rev the engine.

Thanks for your help!

Pretty sure its not the drain tap on the filter but yes I did have it off completely but I'm usually careful with these things, i.e. not cross threading and 'O' rings and as such. Shall check anyway just to be sure but confident theres a leak somewhere else further back towards the tank.

 

We did attempt to bleed the air and cranked quite considerably, admittedly nearly until the starter burnt out!

The car did start whilst manually feeding fuel to the pump so shall look for that leak and invest in a new filter, could probably do with one by now.

Cheers

[junky]

Yes, but why don't the links work?

 

Maybe you need to be a Gold Member! how do I become one?

 

You are probably using Internet Explorer 8+, this forum and many other forums dont work correctly with Internet Explorer. Do yourself a favour and install Firefox, Google Chrome or Opera and see what the internat should really look like! (With adblock plus installed cutting out all those ads!)

Yes, IE9. Must change it to Firefox, keep meaning to. Perhaps that should be put on the thread for other dumb arsses like me!

[junky]

Bringing this thread back alive!!

Having left the car for a couple of days now, not had the time and its been very cold.

Went out there today to try and find a leak under the car between the filter (located under the bonnet) and the fuel tank. No signs of any leaks i.e no damp patches. But looking under the car located right next to the fuel tank is a small cyclinder with an inlet pipe and an outlet pipe. One end 'T's into the fuel return line (from the fuel filter) and the other end disappears up to the top of the fuel tank, without dropping the tank I don't think I will be able to trace it back any further, any ideas what this is? It is electrical as there are 2 wires connected to it that can be seen to disappear immediately above it somewhere into the car body. This is not referenced at all in the Haynes Manual.

Right then, after having a feel around and a wiggle on the cables I haven't done anything else at all, but then decided to put the ignition on to see if there are any noises from this cyclinder thingy, couldn't hear any. But then decided to try and start the car and low and behold the damn thing started, after 2 attempts mind you but it still started!!!

Also looking at the clear pipe that connects to the injector pump from the filter there are quite a lot of air bubbles being sucked up whilst the car is running, remember I removed the filter, could this just be air still in the filter? Should it clear itself or do I need to do something?

What could have caused this? A blockage has cleared in the Filter??, wiggling the cables on that thingy next to the fuel tank?? or could it be coincidence?

By the way, I hadn't even got round to charging the battery since last messing around with it!

[fredthomas]

i had this once turned out to be the fuel line over the egr valve, it was rubbing on it and wore a hole in the pipe, sealed it up been fine ever since

[chrispb123456]

Right the small cylinder as you call it is the dosing pump for the booster heater, you will only get ticking from the pump when the booster heater is in operation, mk 1's should kick in at 5 deg's or below.

 

 

are you sure your fuel gauge is correct? you didn't say how much fuel you had but if you run less than a quarter of a tank and you live in a hilly area then your asking for trouble, as for the bubbles in fuel line give the car a run then recheck, you'll probably find it's cleared.

[junky]

Right the small cylinder as you call it is the dosing pump for the booster heater, you will only get ticking from the pump when the booster heater is in operation, mk 1's should kick in at 5 deg's or below.

 

 

are you sure your fuel gauge is correct? you didn't say how much fuel you had but if you run less than a quarter of a tank and you live in a hilly area then your asking for trouble, as for the bubbles in fuel line give the car a run then recheck, you'll probably find it's cleared.

Aha, thankyou. Found that in the cooling, heating section of the haynes manual after you telling me what it was, cheers.

 

Fuel is correct, just over quarter of a tank. Parked on a flat level surface.

[junky]

i had this once turned out to be the fuel line over the egr valve, it was rubbing on it and wore a hole in the pipe, sealed it up been fine ever since

Thanks, shall remember that one, but not the cause at the moment I don't think as the pipes look fine.

There is a pipe retainer but they weren't held in place by it but are now for however long that lasts as the pipes don't seem to be very secure in the holders.

[junky]

An update.

I went and bought a replacement fuel filter today and fitted it. Note, not the thermo valve, just the filter.

Anyway, filled it with diesel before fitting and fired the car up and low and behold she fired up no problem almost straight away, so took it for a run up the road, not far, then parked back up, no air appears to be in the fuel pipe even when just sat there running.

So, I guess it must have been the filter blocked and air being drawn in from the weakest point somewhere along the fuel feed line, I intend on emptying the fuel out of the old filter to see if it is clear or not, well blow through it to see if it is clear and look to see how dirty the filter inside looks.

It may just be that I connected the filter pipes back up more secure though I'm sure they were as good as a fit as on the new filter. Who knows for sure?#!

 

Shall check the car in the morning and not go too far in it for the time being!

 

Thanks again for everyones input.