Daily driver probs

[jlagnese@massed.net (John Lagnese)]

Hi,
Back again with the 195K mile 91 Jetta 1.8  8V gas. The head gasket and
timing belt are changed. It runs like a champ until it gets warm, then it
really stumbles around 4K. I can hardly get it to go above 4K.
The compression is good - 125 - 135 on all cylinders. I'm very sure that the
timing belt is correct, and if the timing is off wouldn't it be bad when the
car is cold also?
Any ideas?
Thanks,
John.