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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

engine issues.

Old May 29, 2008 | 09:09 PM
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engine issues.

my 83 4.9l seems to be smoking from the valve cover gasket, i put a new one in but it still doing it, i think i know what it is, i just forgot what its called. do i need to rebuild my top end? please help. new ford owner lol.
 
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Old May 29, 2008 | 09:12 PM
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It's leaking around the bottom of the gasket? Or it's blowing smoke out around the fittings on top of the valve cover?
 
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Old May 29, 2008 | 09:25 PM
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blowing smoke. from the back more then from the front.
 
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Old May 29, 2008 | 11:52 PM
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The only thing I can think of that you are talking about is oil mist coming out of one of the breathers or hoses on top of the cover. You need to check the PCV valve and make sure it has suction when the engine is idling.
 
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Old May 30, 2008 | 12:22 AM
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no its not that. Im thinking my head gasket is blown. im not sure what it is though. im not familiar with these engines although there easy to work on. i will start it tom. and see what happens i dont want to mess it up anymore though.
 
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Old May 31, 2008 | 12:58 PM
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If you head gasket were blown you'd be getting coolant in the cylinders. The oil coming from your valve covers is either the valve cover gasket or the PCV valve is clogged and it building up pressure and leaking from your hoses
 
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Old May 31, 2008 | 01:48 PM
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Originally Posted by superdutymj
If you head gasket were blown you'd be getting coolant in the cylinders.
Not nessecerily. It depends on how the Head gasket blows.

The Head gasket can b low in any of these combnations...

A: Water to oil.

B: Cylinder to Cylinder

C: Water to Cylinder

D: Oil To Cylinder

It can even cause a oil or water leak to the outside of the engine, with no other symptoms.

Not saying that is his problem mind...

However the question I have is, where is this smoke coming from. From the PCV Valve hole in the valve cover?

From the Valve cover gasket?

From between the head and the engine?

This hasn't been made clear to me. Need to know exactly where the smoke is coming from.
 
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