Join Date: Jan 2003
Location: Sherwood Park, Alberta, Canada
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Re: Odd sludge deposit = Head Gasket or PCV?
I don't run a PVC on any of mine, just an open hose off the valve cover nipple and never get sludge like that, even in -40 temps.
However, I always run a T stat so if you're not, that would be my guess.
I don't even use T stats with the 1/8" bleed hole in winter as it can decrease heater output temp.
A 192 T stat and a good run with an open hose should clear that up in short order.
Our Turbo 8 V Engines generate lots of crank case heat so sludge is rarely an issue
An oil pump caution, many new ones aren't that good so check it carefully before using.
I always try to run a good used factory pump whenever possible.
I retorque every head, starting lower than the finishing # to determine the difference.
1989 Turbo valve cover should have the one piece "rubber string" gasket. ??
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