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barkster1971 · Jan 12th, 2012, 21:51

Turning the boost back down to 4PSI from 10 would be my first advice. I presume you have an mbc and calibrated boost gauge fitted? Take the plug of the AMM and see if that makes it run like a dog. It should do. You menetioned that the coolant was low which could be a nick in the HG. Have you done a sniff test/ compression test yet? A blocked PCV system will give you problems also and could be the source of the black plugs.
Clean the contacts on the coil too.
Cheers, Carl.

Jan 12th, 2012, 21:51	#18
barkster1971 VOC Member Last Online: May 26th, 2024 15:06 Join Date: Jun 2009 Location: Swineshead/Salford	boost Turning the boost back down to 4PSI from 10 would be my first advice. I presume you have an mbc and calibrated boost gauge fitted? Take the plug of the AMM and see if that makes it run like a dog. It should do. You menetioned that the coolant was low which could be a nick in the HG. Have you done a sniff test/ compression test yet? A blocked PCV system will give you problems also and could be the source of the black plugs. Clean the contacts on the coil too. Cheers, Carl. __________________ new engine! new car!