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Originally Posted by Fuel
I have just taken off all my air intake, exhaust, turbo, and wiring harness (to get to my BHG) and I found a TON of oil all around my spark plugs (enough to cover the spark plugs). I was wondering if this indicates that i have a cracked head or is it just the BHG or some other kind of problem. I also took off my cam shaft covers and found that the oil had turned brown. The cam covers were extremely lose (two fingers on my screw driver took all the screws out) and I was thinking that it was just condensation. Any help would be greatly appreciated; i just bought my 87 supra turbo from an auction a few weeks ago, so it had been sitting for about 2 months before I bought it.
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You had an oil leak from your valve covers that leaked into the spark plug valley area.
When you reassemble those valve covers, use some sealant along with the valve cover gaskets
Edit to add below.
Valve cover gasket leaking is VERY common. Most likely that is your deal.
Don't stress it. You should take your head to a machine shop to check for the head being straight. The max warpage on the head is .0039"
It is also common to have a darker color oil residue on your head.
Seen that on both of my 7M heads.