Mk2 gti 8v running rough and slightly under powered

[busterdub]

Hi all

My 8v is running and sounds like its a john dear tractor, it idles fine, but it's very lump under acceleration and seem to have lost power, sometimes just for a brief second it goes like it should, is something loose? I thought it was the throttle body gasket as heard a slighty sucking noise when setting off plus I changed the body as the switches were goosed! Even check the plugs... Any pointers?

[walchy01]

Had this sort of thing with mine, check your leads as one had mine had broken in 2 places within the rubber on my valver, also check your coil, as again had sparks coming from mine which also resulted in a jumpy ride as and when it felt like it, when you put the foot down it holds back and is hesitant.. Check all air pipes are connected from  the air box etc also

[apie2004]

Cracked exhaust manifold?

[busterdub]

Cracked exhaust manifold?

May be? The exhaust note has changed, and has become very 'poppy' at the outlet.....

[apie2004]

Have a feel around the back of the engine, dont touch the downpipe/manifold but if it is cracked you should be able to feel the exhaust gases escaping.

[mk2bal]

If its a digi 8v it might benefit from a new blue coolant sensor and a tune up as per rj's guide.. Can be quite critical to the running of the digi's. A mates 8v banged popped and had no power until a good sort out

[busterdub]

If its a digi 8v it might benefit from a new blue coolant sensor and a tune up as per rj's guide.. Can be quite critical to the running of the digi's. A mates 8v banged popped and had no power until a good sort out

We're can I find this guide?

Check the manifold and it's not blowing?

[busterdub]

If its a digi 8v it might benefit from a new blue coolant sensor and a tune up as per rj's guide.. Can be quite critical to the running of the digi's. A mates 8v banged popped and had no power until a good sort out

We're can I find this guide?

Check the manifold and it's not blowing?

Yeah thanks I had a nosey before, it was the rj that threw me didn't know it ment rubjonny But cheers for the link


http://www.golfgtiforum.co.uk/index.php?board=40.0

[Simpson]

check very carefully the rubber intake hose for cracks, also mine has a similar problem traced mine tobe the inlet manifold gasket causing her to run lean. On mine i kept trying to seal the intake hose aS when i slightly held it at the back the squeeling stopped! This is due to the weight on the seal by putting weight on the inlet manifold,

Currently remedied by some tight rope till i can be bothered to change it!   

[busterdub]

Just tried the inlet manifold it isn't that as its solid and made no difference..... But I did noticed a clear liquid on manifold near the injectors and the exhaust flumes smells of fuel