Damn you lift pump or is it just me?

Swags · Jul 15, 2016

Hello, fairly new to this.... Forums and Defenders. Just picked up a 1989 110 CSW 200tdi (told it was originally 3.5 V8) (as a project) all is expected do one job and straight onto the next.
Anyway I was have an issue with it not revving or fluctuated at around 2500 so I took the fuel lift pump off (which was broke) but the new one will not sit in? Is it a case of me turning the cam ? Just don't understand why the old one will go straight back in but the new one won't.

fozt · Jul 15, 2016

Swags said:
Hello, fairly new to this.... Forums and Defenders. Just picked up a 1989 110 CSW 200tdi (told it was originally 3.5 V8) (as a project) all is expected do one job and straight onto the next.
Anyway I was have an issue with it not revving or fluctuated at around 2500 so I took the fuel lift pump off (which was broke) but the new one will not sit in? Is it a case of me turning the cam ? Just don't understand why the old one will go straight back in but the new one won't.

Hi,

I had similar problems fitting a new fuel lift pump on my 300tdi. Turning the cam over made very little difference for me.

When you say it doesn't sit in, how do you mean? The arm on mine was hitting the cam, but obviously the arm moves up and down - so i had to hold (push) the lift pump in place with enough pressure to lift the arm up on the cam whilst I bolted it on.

Foz

Kwakerman · Jul 15, 2016

Put the two pumps side by side to check that the operating levers are the same length, was there a spacer between the pump and block when you took the original off?

Swags · Jul 15, 2016

No spacer and they are the same length. But the new one is a stiff as hell? Going to have another go later

julianf · Jul 15, 2016

I thought the 200 had a spacer too, but ive only got 300s here.

Ive found, in the past, that they seem to come off easy, but when you put the new one one, you need the bolts to tighten up and compress the spring in the pump.

....but, obviously, dont just force it ether.

julianf · Jul 15, 2016

When theyre both off the engine, can you compress them both with the same sort of force?

Swags · Jul 15, 2016

No, the new one is really tight and hardly moves...

Martin Goode · Jul 16, 2016

Got so fed up of lift pump failures (even the Delphi ones!), and diesel entering the sump, that I had an electric lift pump professionally fitted to my 300tdi a year ago. No issues since.....

Kwakerman · Jul 16, 2016

Martin Goode said:
Got so fed up of lift pump failures (even the Delphi ones!), and diesel entering the sump, that I had an electric lift pump professionally fitted to my 300tdi a year ago. No issues since.....

Slightly off topic but that's something I've been considering doing along with a separate fuel cut off solenoid (for additional security). Could you tell me what pump you have fitted (make/model) as I still need to do the research into output pressure and flow rate requirements or a link to who did it?.

Swags · Jul 16, 2016

Martin Goode said:
Got so fed up of lift pump failures (even the Delphi ones!), and diesel entering the sump, that I had an electric lift pump professionally fitted to my 300tdi a year ago. No issues since.....

As Kwakerman..... I'm interested in the above, do you have anymore details?

Martin Goode · Jul 16, 2016

I don't know the exact spec of the pump, I'm afraid. It's a Facet Lift Pump from the States, and it retailed for about £85.00. I have attached two photos of the install, if it helps.

Swags · Jul 16, 2016

Thanks

that's the way fwd I think

julianf · Jul 16, 2016

note: those faucet pumps normally specify that they should be mounted close to the tank, rather than close to the engine.
i know other people who have them mounted in the engine bay without issues though, but that is what the datasheet says.

you can match the pressure to the expected inlet presure on the IP, and then select the one you want. Im probably going to do this to my 2.8TGV as the injector lines prohibit fitting the standard delphi pump, and, instead, require a £70 job from M&D... :/

Damn you lift pump or is it just me?

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