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MK1 Gti DX Injectors

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Running Problems

Hi all, newbie here!

I recently got hold of a 1985 GTI 1.8 DX cabby, it runs with a judders mainly around 2000 revs and gets worse when hot and difficult to start
. I have read many threads on this and some of them point to the injectors.

So I pulled out a couple of them today to check the seals, seals are fine but it seems there are two different types in there. mk1 injectors.png

I found one of the top one and one of the second one down in the pics? Is this right ????
Sorry if this is a stupid question???!!!?!?  I put them back in and the one in the middle feels a bit loose as you can move it a little form side to side

Last edit: by patch006

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The air shroud injectors (top pic) are later type and there should be a rubber vacuum hose between cylinders 3 and 4.
If you have no hose you need the early type.

Have a look and let us know what type of head you have.

It is possible for the end, "top hat" to fall off into the head, they should no cause any major problem as they are rattling around above the valves and there's not enough gap for them to fall any further, you have to remove the exhaust manifold or inlet manifold to get them out.

If the injectors are a little lose it may be worth replacing the seals.

1988 Mk1 Golf GTi Cabriolet 1.8cc DX, K-jet. Daily drive. 317,000 miles and counting
1978 Mk1 Scirocco GLS 1.6cc FR, Webber carb. Weekend toy.

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IMG_1285.JPG Thanks for the reply,

I have taken some pics ( bad ones ) there is a pipe coming out near the 3rd injector to the right. It seems seems to run a little better since messing with it.

I did replace the seal on the far left one, the one that does move a bit ( missing the hat ) . I didn't know if that was because the hat had come off?
Would it hurt to leave that hat thing in there? would it not have a effect on IMG_1281.JPG  the running ? Could I get a replacement and fit it while leaving the other hat in there?  The pics are next to useless sorry. 

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Have a look at my picture on the bottom of this thread and let me know if you have that sort of pipe, I've highlighted it in red.

Sorry I can't put the pictures on this thread as the pictures are on photobucket….

View topic: Vacuum hose layout - The Mk1 Golf Owners Club

1988 Mk1 Golf GTi Cabriolet 1.8cc DX, K-jet. Daily drive. 317,000 miles and counting
1978 Mk1 Scirocco GLS 1.6cc FR, Webber carb. Weekend toy.

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D0F13C56-CFC6-4CEF-9D3E-1BC9A4FEEF35.jpeg

The 'before' shot. There are two types and the older longer ones are the correct ones.   BF9623C2-1C85-4550-8336-3486715A3AB1.jpeg

These were the replacements for my 1984 DX engine with part numbe. 

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ive just done this, got same year with same fault.
tried to pull injectors out but one snapped.
so removed inlet and got to it. they wetre in a terrible state  with onemissing hat. cleaned up and got 2 good ones and bought 2 new ones , fitted with new seals and it purs now

Wiring jedi
Www.jvsautoelectrical.co.uk
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