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Original Message
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| new FE rebuild problems |
| By Kevin - 06/21/2004 7:35:45 PM; IP 68.62.25.171 |
Just started a new FE rebuild.
The engine started fine and ran well for about 10 minutes. Some smoke as the gaskets settled in. White smoke from the downdraft tube and oil fill spouts. Running well at 1200 - 1800 rpm. Engine temp building slowly to about 175-180 degrees. Oil pressure right around 55lb.
Only 12 inches of vacuum at the manifold with a new factory spec cam. I think it should be about 15 inches.
About 10 minutes into the break-in run the engine started to backfire through the carb when rpm was below 1800. Engine continued to run fine at 1800 -2000 RPM and decided to continue with break-in run. Engine than began
to backfire rapidly in the intake manifold and temp suddenly ran up to 200 degrees.
Killed engine and temp eventually peaked at about 230 degrees. Radiator overflowing at expansion tank.
What happened? Why the low vacuum. Do I have the timing off - maybe the distributor is off a tooth. A bad distributor? Maybe a blown head gasket?
Can anyone help with diagnostics?
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This thread, so far...
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