My mates just had his car looked at and been told it has a compression fault, he said its lacking power and kangarooing at aroud 2000rpm in 4th and fifth. Any ideas? thanks for any help in advance.
More often than not, if you just loosen the two mounting screws a few mm, wiggle the valve about a bit and retighten it, this will re-seat the valve properly and will cure the problem.