GTI-R US
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Posts : 8349
Join date : 2012-03-04
Age : 108
Location : DONT KNOW ANY CLUES???
Yes as aron says could have thrown rockers or have cracked a ringland on a piston
Is the car at idle or partial throttle feel like it's only running on 2or3 cylinders?
If so then remove the spark plugs first then compression test engine and post up your results
If there is one cylinder down on compression put a spoonful of oil down the plug hole of that cylinder and do the test again
If compression then rises in line with the others then it will be ringlands have cracked, if no change then chances are you have thrown the rocker off the pivot which will cause damage to head and piston unless you are very lucky. But you will need to remove rocker cover to investigate damage that's been caused
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