Firing on 3?

[towners]

Just bought a 91 gti (digifant)

Managed to get it running, but it sounds like its on 3 cylinders (when you rev it it seems to improve slightly), have changed plugs, checked leads and dizzy (all seem well).

Car has sat for a while btw

I wanna clean injectors as one plug is colder (next route to check) how do you get them out and how to clean them ? (airline?).

help!

thanks in anticipation

Paul

[towners]

worked out that it is firing on 4

it just has trouble revving up to about 3000 but if you hold revs at 1500 (or any other range)its fine

someone told me it could be lift pump in tank?

any other thoughts?

ta

Paul

[Judderi]

It does sound like a fueling issue. Could be a blocked fuel filter, nackered lift pump or nackered main pump. When you turn the ignition only on do you hear a buzz for a second or 2 then it goes off? This should be the main pump priming. If so then it seems to be ok. The lift pump is a common problem.

[towners]

thanks for repy

yeah she makes tehe buzzing noise for around 2 seconds then starts fine evey time

lift pump is £20 so will try that route first (apparently not to bad to fit im told)

thanks once again

[Judderi]

Yeah pretty easy i think. Its in the boot, thats all i know! 

[rubjonny]

lift up the boot carpet and/or the rear seat (cant remember exactly where it is on a MK2), its under the black plastic circle, easy

[towners]

changed pump in tank butstill the same :embarassed:

anymore suggestions anyone? anyone? bueller? bueller?

p

[Mr Blue]

you had the timing checked? air fuel mixture?

[towners]

not checked timing or mixture (not sure how to yet) but car has been sat for a while, just thought it might be a sensor?

[towners]

have now tried fuel filter as well and im pretty certain its not a petrol problem (feed)

what sensors are there to try (cheapest first :-))

any help will be most appreciated

p