MK2 gti intermittent power loss

[Depone]

That's ok mate, needed that snippet to get further.

Hopefully, you are a bit handy diy on the car.

Best thing you can do is get yourself a MK2 Golf Haynes manual. In the fuel section it details how to check the pump flow/volume.

Essentially, you jumper the fuel pump relay and disconnect the return pipe and see how much fuel comes through in a set time. That should give you a good idea about the state of the pump.

If it is under performing there, then there's a case for getting a new pump.

Does the standard pump whine loudly? They can be quite noisy when OK but get bad before they quit altogether.

A lift pump would be worth fitting assuming the main pumps are hard to get. I doubt they are though, not with the internet and the massive number of Kjet VWs in America.

I'd want to do the volume check first though and a pressure test as well. The gauges are pretty checp to buy online too.

Gavin

I called the mechanic and they apparently have tried these things.

My pump is pretty silent, can't hear it hardly but that could because of my exhaust.

Would I need a new sending unit as well?

[h100vw]

I called the mechanic and they apparently have tried these things.

My pump is pretty silent, can't hear it hardly but that could because of my exhaust.

Would I need a new sending unit as well?

Can you feel the main pump, even if you can't hear it. You can also jump the relay so it runs all the time, then the exhaust won't be a problem.

Best you get the Haynes manual.

The lift pump comes on it's own. less than an hour to change it. Getting the big nut off the top of the tank is usually the worst bit in my experience. Followed by wriggling the pump and sender out of the hole that's left.

Be careful taking the pipes off the sender unit, the one use crimps that hold them on can be tough. I cut them with some kick ass side cutters I have and replace them with jubilee clips.

Gavin

[ozgti]

Mine does this. I've narrowed it down to needing a new fuel filter, poor vacuum and a metering head that needs a serious refurb. It's all going to get done eventually. I can vouch for the fuel clips, i had to undo mine after a so called specialist had changed the pump ( and didn't).

If you can find a classic porche mechanic, they'll be able to diagnose the Kjet properly. Not many mechanics know much about kjet. Trust me, I've found 2 in Sydney and they're miles apart!

[Depone]

Can you feel the main pump, even if you can't hear it. You can also jump the relay so it runs all the time, then the exhaust won't be a problem.

Best you get the Haynes manual.

The lift pump comes on it's own. less than an hour to change it. Getting the big nut off the top of the tank is usually the worst bit in my experience. Followed by wriggling the pump and sender out of the hole that's left.

Be careful taking the pipes off the sender unit, the one use crimps that hold them on can be tough. I cut them with some kick ass side cutters I have and replace them with jubilee clips.

Gavin

Had a listen and I can hear the pump working...But the car is running fine right now, the danger is around half a tank and then it can fail ( but not all the time )

Having a look online now and I can find replacement fuel pumps easy, but should I be safe rather than soryy and get a new sending unit as well? Would hate to replace it and then it turns out the sending unit is the issue...

Sending units seem to be tricky to find but this looks to be the one

Dorman OE Replacement Fuel Sending Unit - JCWhitney

There are a few good tutorials online so going to give it a bash.

[velly_16v_cab]

i have the same problem with my digi 8v GTI mk2
1/2 a tank and then it seems to die.
I was going to replace the lift pump/sender (was going to try to get one from the uk)

[Depone]

i have the same problem with my digi 8v GTI mk2
1/2 a tank and then it seems to die.
I was going to replace the lift pump/sender (was going to try to get one from the uk)

Velly could you possibly put the link to where you would buy the sender/pump please, if not could you PM it...I am struggling to find the sender unit and from what I can gather replacing it as well as the pump would be a good idea.

Thanks

[ozgti]

Kjet needs fuel pressure to work properly, and good vacuum. Mine does the same at half tank (or there abouts). It's my warning that I need to fill up! Gauge goes between 3/4 and 1/4 instead of full empty!

[velly_16v_cab]

mine is a digifant, and only can get 400km out of a tank as it will cut out when it froms below 1/2 way .

will post a link if i find some, but remember i am looking for Digifant not k-jet parts

[ozgti]

The lifter pumps shold be the same. Kjet has an inbuilt sump around the main pump so as long as it can fill the sump, you should be fine. Mine's running a digi lifter to the accumulator and fuel filter, no sump. Might need one soon though as I can't turn left below a certain fuel level without it hitting the hard rev limiter!!!!

[ljoaquinl]

I have the same issue with my car. I was driving going to the office when my car stopped in the intersection. I tried starting it again but it doesnt want to. since I was at an intersection all the vehicles behind me are honking and i decided to ask for help from the traffice enforcers to push my car. when they were pushing it i tried to start the engine using the switch and it did ran again. I think the cops thought that I was playing a prank on them. Also theres is another instance wherein I was using it for a while then I parked in a resto to eat, when I was about to leave the place suddenly my car doesnt want to start it doesnt even want to crank. I checked the battery and, fuse, relay all of it but still no luck for me. I asked my brother to tow my car back to the house since I need to go to the office. I was surprise when I got home and tried to start the engine coz it did start with just 1 click... this has been happening to me numerous times and I cant see the problem with the car, for some reason everytime it would stop i would give it a rest for a few minutes and then the car would start again. up to now I havent use my MK2 since the last time it happened was the one at the resto and I allowed it to rest for almost an hour and it didnt start. Just to add its not overheating as well. Any advice would be greatly appreciated for I miss driving my MK2.

[Depone]

I have the same issue with my car. I was driving going to the office when my car stopped in the intersection. I tried starting it again but it doesnt want to. since I was at an intersection all the vehicles behind me are honking and i decided to ask for help from the traffice enforcers to push my car. when they were pushing it i tried to start the engine using the switch and it did ran again. I think the cops thought that I was playing a prank on them. Also theres is another instance wherein I was using it for a while then I parked in a resto to eat, when I was about to leave the place suddenly my car doesnt want to start it doesnt even want to crank. I checked the battery and, fuse, relay all of it but still no luck for me. I asked my brother to tow my car back to the house since I need to go to the office. I was surprise when I got home and tried to start the engine coz it did start with just 1 click... this has been happening to me numerous times and I cant see the problem with the car, for some reason everytime it would stop i would give it a rest for a few minutes and then the car would start again. up to now I havent use my MK2 since the last time it happened was the one at the resto and I allowed it to rest for almost an hour and it didnt start. Just to add its not overheating as well. Any advice would be greatly appreciated for I miss driving my MK2.

Sounds like the same issue to me...Bang the fuel tank instead of resting it, if it fires back up then fuel pump/sending unit.

Good luck finding the sending unit though, can't find them anywhere...

[velly_16v_cab]

i have a new lift pump and a sender unit coming from the uk...I have a mate with a vr6 mk2 who is changing the fuel tank. new lift pump (plus a spare) and send unit (only 12 months old)
Man i miss the uk lol

[Surfpig]

probably doing the wrong thing by not reading the whole thread,

but mine seems to like miss fire when accelerating between 2k-3k, its like it isnt getting enough fuel/air or something like spark. not really sure but once i rev higher it will kinda stop but again happens if i try to give it some up through the revs.

[Depone]

i have a new lift pump and a sender unit coming from the uk...I have a mate with a vr6 mk2 who is changing the fuel tank. new lift pump (plus a spare) and send unit (only 12 months old)
Man i miss the uk lol

I couldn't find mine in time....Lift pump failed today and could not be revived

Went to go get it towed to J&F but they are full so I am taking a big risk sending it off to a mechanic who I have never met/had anything done by before.

Tried to tell me the lift pump could cost between $200-300...Explained that I was going to order one for less than $150 with postage and do it myself but haven't got around to it yet.....Not looking to good so far.

[velly_16v_cab]

ebay is your friend....lift pump from the uk is only a few pound plus postage.kjet and digifant lift pump are the same (so ive been told)