Fuel Pump problem

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GSM91
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Fuel Pump problem

Post by GSM91 »

Hi everyone, I'm new to this so forgive me if it goes pearshaped. I have a 1.9 diesel Citroen Dispatch on a 02 plate.

The other week it started to have starting problems then quit altogether, had AA out, could not get it started, said it could be stop start solenoid, and that its an Citroen main dealer job.

Had van recovered to Citroen for diagnostics, Citroen claim "no faults found, bled system through filter housing, letting air into system, when running, fuel pump leaking and letting air into system".

They quoted £1800 to repair this, once I got up off the floor I thought there must be another way, the pump is a lucas injection pump.

I've found that there does not appear to be any fuel coming out of the fuel pump to the injectors, but there is fuel going in and around fuel lines, can't fine leaks or how Citroen managed to get van running as it don't run?.

If I change fuel pump will I have to have ECU recoded?, if I don't change pump can I transplant the solenoid from my old pump to new pump, how much hassel will this be?.

I would appreciate some advice please.
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CitroJim
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Post by CitroJim »

Oh dear. Some people do see a diesel pump problem as huge money...

No necessarily so. The Lucas on your Despatch is just an update of the DPC that has been knocking around barely changed since the days of Fordson tractors...

The big problem is that the pump is armoured around the stop solenoid and before any work can be carried out, the armour has to be removed and this means removing the pump from the engine and attacking tamper-proof bolts. Oddly, despite being tamper-proof, they do not put up much of a fight when attacked with a reverse-flute socket designed to undo rounded-off nuts.

If you replace the pump then yes, it will need recoding as the immobiliser is contained within the armouring.

However, if you are content that you could live without the immobiliser, it is possible to remove the armouring and swap the solenoid for a conventional one. You'd then need to arrange a new ignition-switched feed to the solenoid.

Again, once the armour is off, leaks are easy to fix. I've posted the procedure to replace the seals on here recently.

As I say, all this entails removing the pump complete. It can be done without disturbing the cambelt provided the pump sprocket has two index holes but you will need a special puller to break the sprocket from its taper.

This is maybe why the quited cost is so high. Much labour is involved.

If you're not up to it yourself, always go to a specialist diesel outfit. they're both much more knowledgeable and more economic with your money.

Before even going down this road, check and check again that the problem is not simply one of fuel starvation or air ingress into the fuel supply.

Lucas pumps also have a habit of gumming up their fuel metering needle if the pump has ever been called upon to pump dodgy fuel like Veg, badly brewed biodisesel or very wet DERV. It's a doddle to fix but again the armouring has to come off to lift the lid and free off the needle

EDIT: The metering needle gumming up causes the same symptoms as you have. Often the engine won't start or if it does, after much effort, it will run but will be reluctant to rev or develop any useful power.

:twisted:

Hope that helps...
Jim

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Post by wheeler »

CitroJim wrote:As I say, all this entails removing the pump complete. It can be done without disturbing the cambelt provided the pump sprocket has two index holes but you will need a special puller to break the sprocket from its taper.
Unfortunitely the DW8 is not like this & does need the timing belt to be disturbed.
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