Kangaroing and wiggly pipes help

[Deefadog]

Hi Guyz, hope someone can help me out on these teo problems:

1) When i take my foot off the accelerator coming down a hill and keep the car in gear (any gear) the car juders back and forth instead of holding steady in the gear. I have had all the engine mounts checked and the front one replaced.

2) The injector metal tubes go into the engine (sorry don't know what they are called) there is alot of movement, I can wiggle them on at leats two, Should they be like this and if not what can I do to sort them.

Cheers

[golfvr6]

1. Could be fuel or ignition related, i think you changed your HT leads already? probably more likely to be fuel related.
2. Could be linked to question 1, maybe worth changing the seals on the injector inserts, as they sound like they are worn.

[Mixologist]

Mine used to do this when i was going up a hill or having the car under loas, fat mates in the car, I got it checked out and the HT leads and spakies were chamnged and prob was solved!

Just check em before you take it to a garage

[Deefadog]

yes HT leads and plugs have been changed, made a huge difference byt still the kangaroo effect.

How easy is it to change the seals, I guess they can be picked up from VAG or GSF?

[Gambit]

the injectors shouldnt be able to wiggle

the injectors just simply pull out,

get the o-rings from VAG (dont use any others), think its 2 per injector, then just smear a touch of vasoline on them and push them back in

whether this cures your kangarooing i very much doubt

if you want to test your injectors - with the engine running spray carb cleaner in round each injector - if its not a tight seal then the engine note will change

[Deefadog]

So they just pull out out of the engine, will any fuel leak anyware? I just want to cover all bases before i do this.

The worst injector is the far left one, I think this is becsaue when you pull the breather form the air box you hit it!

The kangarooing is not that bad, just annoying!

"To test the injectors when the engine is running"

Do you mean to pull each one out as the engine is running and spray carb clean on them and then reinsert them?

thanks, this sort of maintenance kind of scares me a little

[Gambit]

dont pull them out with the engine running otherwise fuel will spray everywhere

the injectors will be fully closed 12secs after the engine is turned off, you can then pull them out and change the O-rings, no fuel will leak out, except maybe a drip or two

no need to pull the injectors out when testing with carb cleaner. just spray in around the injector bases with the engine idling. the idea is that if they are not a snug fit then the carb cleaner will seep down past the O-rings

[frankerooney]

If these are KJet injectors, like mine, then they do wobble a little bit. Worth changing the seals every few years though, as they get squashed and mishapen + leak. With the 8v ones (not sure about 16v) the green ones tend to last better.
If it is KJET, there's probably an extra o-ring around the end and you might want to replace this aswell.
You might well have some trouble getting the injectors out if they are kjet ones - there's a special removal tool but I used a screwdriver + 13mm spanner under the union to prize them out. Careful the little bucket bit doesn't fall off the end - it's a nightmare to retrieve when it's sitting on top of your intake valve!  

[Deefadog]

Thanks for the info!

This is a bad pic (sorry) of on of the injectors



Is this a KJET? (sorry for the dumb question)

[Gambit]

yes your car is a kjet