1986 mk 2 gti fuelling problems ?

[Martyn]

Hi Guys, first time user so bear with me !!
I have just bought an 86 mk 2 gti 3 door with 149k on clock, which did not run, the external fuel pump was replaced by the previous owner, but unfortunately, with the pump from a later car (digifant), this car is jettronic ? and still wouldn't run, the problem was identified as the metering head, which was replaced, now it runs............however after a decent run it keeps stuttering. If you turn the car off, leave it for 10 mins or so it is a nightmare to start, but from cold it starts fine. Another problem is that it seems that the idle cannot be turned down, and hot or cold it sits at about 1800 rpm ? The petrol sender wasn't working, but after a good stamp on the brakes last night, it has started, could all problems be down to internal pump in tank, or the wrong external pump ??
Any ideas
Generally the car is in good order, unmolested with no major rot, bar the bottom passenger side of wind screen behind wiper arms, and water is pouring in !!!, I have also had to tape up the sunroof, but that a side its a great old car that pulls well, and well worthy of a little tlc. I have had a few mk2 gtis and forgot just what a cracking car they are.
Hope some one can help !!!
Cheers
Martyn ( Isle of Man )

[rubjonny]

The digifant pump will be the problem, it cant supply enough fuel pressure for the k-jet system!
You need to get a k-jet 8v or 16v pump.  While you're there, check the in-tank pump is also working.

The digi & k-jet pumps are quite alot different though, you would have to convert some hose ends to fit as the K-Jet fuel feed pipe has a banjo connector and the digi pump just has hose clips.

[Martyn]

Cheers matey, many thanks for the advise, I will have to have alook on ebay to see if i can source the external pump, or if any of you guys have one out there mail me hobson@mcb.net

[rubjonny]

I actualy have a pump & housing, but you'll need 4 rubber mounts from VW and a new fuel filter to make it complete...

[Martyn]

 :cool:Cheers Rubjonny, how much do you want for the lot ?, I trust its in good working order ? ive actually got a new fuel filter, (god there not cheap) that i bought assuming the car had the right pump!! I live on the isle of man (IM2 7AR), so perhaps you could include postage in price. I have been offered a pump to try of a mates 16valve, which I hope to change over 1 night this week, if that solves my problem you may have yourself a buyer !!, do you know if the mounts are available from the vdub agencies still ? once again cheers for the info, and i will keep watching, and be back in touch !!!!!!!!!

[rubjonny]

It was fine untill I took it apart for spares
I got the rubber mounts from VW, didnt cost a great deal.  No idea how much to ask tbh, £20?

[Martyn]

Cheers for that matey, i am going to try the pump off my friends 16 valve, and will let you know if it solves the problem !! if so i would be happy with 20 notes, perhaps you can let me know on postage ?

[rubjonny]

doubt it will cost more than £10

[Martyn]

Ta rubjohnny, was supposed to be changing pump tonight to try of my mates 16 valve, but the heavens opened, so have had to put off, will keep you upto date with progress, whats the score on arranging payment for your pump, can i send you a chq or what ??
I also need a speedo cable, and old skool radio/cassette 86 era ? if you or any other dub freaks can help ?

[rubjonny]

Yeah will have to be a cheque as my paypal account is shafted!  I'm on holiday next week but will be back on saturday.