Intermittent miss up to 2k and idle when warm NA-T

[pwpanas]

Originally Posted by Travis89Turbo

Only thing I can think of that is left would be ECU possibly. Hopefully I can talk my friend with the mk2 to let me swap ecus.

How is your valve shim clearance?

Originally Posted by interested!

Hi! , No problem ! Question ? : is the engine a high miler from new without top-end overhaul ? -- The valve seats and valves may have some pitting and this is letting the pressure through , my 7MGTE head needed an overhaul ,the seats and valves desperately needed recutting/refacing following a BHG as they were severely pitted ,a leaking ( oil ) turbo and general clean-up . I've had two engines where the inlet valves have split at the seat and burnt away , one was nearly new , the other a high miler . both were misfiring .

True. I've seen a VERY badly pitted head from running higher boost on pump gas. In fact, (among other damage) it punched right through from one combustion chamber to the next! Lots of welding and machining was required to get that head back in shape.