Well iv changed all the spark plugs, all the gaps are correct also. Changed the leads and coil pack to that of my 1.8 si, known to be working. I changed the rocker cover again, incase i had miss torqued it or installed it wrong and it had created another leak, but that also seems ok.

so now im down to thinking it could be bottom end related. will test for compression when im back at work.

To give an indication, after changing the rocker gasket and plugs, the car ran sweet. then after a thrash, in 4th at over 80mph, something went and the car lost power and began to, what seems like a missfire as its like a machine gun type noise when accelerating. It now wont idle properly.

So......Help