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post #1 of 1 (permalink) Old 03-17-05, 07:04 AM Thread Starter
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Join Date: Oct 2003
Location: Washington State
Age: 63
Posts: 25
confused Sick Pony

Engine background:
1982 Mustang 5.0 HO
B&N supercharger w/7 psi max boost
Rebuilt engine 9/2003 about 8,000 miles ago
Holley 850 double pumper
Competition Cam 262 XE

Car's been running roughly recently, unsteady idle, hesitation

Checked oil level last week and had to add 3 1/2 quarts of oil.
This morning I had to put in 2 gallons of water in the radiator.
This evening when I got home, I noticed oil or steam (couldn't tell, could be both) out the exhaust pipes at idle.
No noticeable oil or water leaks from engine.
Removed breather caps on valve covers and some evidence of water in the caps (frothy sludge and condensation inside the caps).
Pulled dip stick and no sign of water. Water in radiator looks ok, but low.
I removed the spark plugs. #6 had some discoloration, others were ok.
Compression test: All read 145 to 150 psi except #8 at 135 psi.
Discovered boost pressure sensing line to pressure gauge was disconnect at the intake manifold.
Located puddles of black oil on intake manifold drivers side between two rear runners.

I plan to remove valve covers next. Suspect Intake manifold gasket leak. Blown head gasket a possibility? Hope nothing more serious.

Any comments or helpful suggestions would be appreciated.

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