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Old 01-18-2013, 07:36 PM   #34
interested!
3" Exhaust
 
Join Date: Apr 2011
Location: redhill surrey uk
Posts: 142
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Question http://www.toyota-supra.info/forums/mkiv-supra/20746-intermittent-miss-up-to-2k-and-i

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 .

Last edited by interested!; 01-18-2013 at 07:42 PM. Reason: extra info
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