Help needed - fuel injection on MKII Golf GTIs

Stonedofmoo · 14 Apr 2006 at 14:46

Afternoon all

We recently bought a C reg MKII Golf GTI 8v. It worked perfectly for the first weekend, but 2 weeks later when we came to move it again it had compleatly died

Engine turns, but doesnt catch. Anyhow RAC man came along and reckons fueling. So do we as we've now changed the dizzy cap, rotor arm, spark plugs and coil pack and charged the battery etc but it doesnt even sound like it's trying to catch

Now, we have tested the fuel pump is working by simply disconnecting the incoming fuel line into the fuel injection unit on the left hand side of the bay, as soon as you start the car it primes and fuel sprays everywhere with a decent amount of force.

Now here's the bit we dont understand.
If we disconnect one of the fuel lines going into the injectors on the engine the fuel barely comes out. It doesnt spray out like we expected, it literally trickles out so slowly it would take 10 minutes or longer to fill a cup. This is while we are trying to start the car by turning over the engine, a fraction of the force the fuel pump is sending it to that unit.

I was expecting it to jet out in a sequence depending on the firing order of the car, but it doesnt. I'm convinced the fuel injection unit is at fault then, but if anyone knows more about these cars can they offer any insight?

Thanks in advance

Stonedofmoo · 14 Apr 2006 at 15:13

No I disconnected the fuel lines at the fuel injection system end, not the injectors and next to nothing was coming out. And no it doesnt fire even slightly

The electrics in terms of sparks are perfect. The RAC guy tested them and you could see clearly it was sparking perfectly. The engine also has good compression so it's not that either, and was working perfectly up until it's 2 week holiday

Any more ideas peeps?

Stonedofmoo · 14 Apr 2006 at 16:23

Then its bosch k-jettronic fuel injection.

Yes thats the one! (or at least one of my housemates friends says it is)

OK so distribution pump sounds the culprit. Just need to find out where that is now

Stonedofmoo · 14 Apr 2006 at 16:35

No it literally never sounds like it's catching at all

I've taken some pics

This is the unit on the left:-

Pipe one is the fuel line, If you undo this fuel sprays out at considerable pressure
Pipe 2 is an example of a fuel line we undid to see how much fuel goes to the injectors. The answer is... a trickle

Stonedofmoo · 14 Apr 2006 at 16:36

Oops, I put the '2' on the wrong pipe, I meant the one above and to the left

Stonedofmoo · 14 Apr 2006 at 16:50

OK cool, what do i need to do with that, check it has power I guess?

Stonedofmoo · 14 Apr 2006 at 17:10

I just put a multimetre on the plug that goes onto that blue injector. Should there be power going to it?

Nothing registered

Stonedofmoo · 14 Apr 2006 at 18:56

ok, silly question but how do you get the flipping injectors out :confused:

We tried pulling on them with some real force, unscrewing them with a spanner and nothing we did could get even one out.

On the other side I took off the rubber bellows thing and could see the disc you described. I could lift that up freely and it lifts without any noticeable resistance.

Finally if anyone knows MKII Golf's where abouts is the fuel pump relay located?

I dont suppose there is anyone in the south area who would be willing to come look at the thing for us. All I want to do is get it running so I can sell it off.

Stonedofmoo · 14 Apr 2006 at 19:28

Defo getting a good spark mate, got a new coilpack, sparks and rotor arm and cap on there. the RAC guy said the electrics were fine, he thought fueling too.

The rubber bellows thing was done up tightly, plus remember it was working perfectly and nothing was done between then and when it broke so I dont think it would be anything like that

Really is most frustrating

Stonedofmoo · 14 Apr 2006 at 20:07

Yeah even bump starting it produces no effect, and we tried turning it and turning it... nothing!