mk4 buggered
 

hey all,
Just wondering if any1 would be able to diagnose a few problems that i have goin with my car...firstly when i turn it on, idle goes down to about 200 rpm then when i give it a rev a heap of black smoke comes out the tail pipe and it stalls..i did manage to limp it home the other night without it stalling but its chewing a hell of a lot of petrol and getting no acceleration...i was wondering what it could be and whether it may be the maf or o2 sensor or possibly something more serious.
any feedback would be helpful
cheers

Most likely you have a vacuum leak in your charge-air system ... the intercooler+piping needs to be completely sealed due to the way the oem maf works. Usually a clamped intercooler hose has simply popped off...loosen the clamp, put the hose back on, and tighten the clamp. Note that sometimes the place the hose has separated is in a hard-to-access/hard-to-find location.

sadly its an N/A ..no intercooler...

I still suspect a vacuum leak...

cheers for the info, was helpful...ill take a look :)