Oil coming out of drivers exhaust

[Willyswagn]

Ok gents,

89 sub 4wd with 350 engine. Engine overheated on my last trip but made it home, might be a bad thermostat as I flushed the system recently. Runs rough but doesn't smoke. Last time used it wants to stall. Thinking it might be bad egr valve. Have put in new plugs, wire, dist cap, rotor, pcv.

What I noticed is oil dripping out of the drivers exhaust manifold where it is connected to the exhaust. Oil has prob ruined o2 sensor which might cause the rough running? Yet doesn't smoke and starts up fine.

Any ideas?

[dlog]

From what you describe, it sounds like you have blown a headgasket?? Maybe I'm missing something here??

[Blue Bowtie]

How do the spark plugs in that bank appear?

[Willyswagn]

Haven't pulled the plugs yet but there is no blue smoke out of the exhaust. Oil looks good and only down 1/8th quart.

[silicon212]

Originally Posted by Willyswagn

Ok gents,

89 sub 4wd with 350 engine. Engine overheated on my last trip but made it home, might be a bad thermostat as I flushed the system recently. Runs rough but doesn't smoke. Last time used it wants to stall. Thinking it might be bad egr valve. Have put in new plugs, wire, dist cap, rotor, pcv.

What I noticed is oil dripping out of the drivers exhaust manifold where it is connected to the exhaust. Oil has prob ruined o2 sensor which might cause the rough running? Yet doesn't smoke and starts up fine.

Any ideas?

Is the oil actually oozing out of the manifold (it would smoke like hell and you'd see liquid inside the tailpipe), or could it possibly be coming from a leak at the valve cover, running down onto the manifold?

[Willyswagn]

update:

Yes it was the head gasket. Someone had opened the engine before and either bumped the gasket on installation or else part was bad.

In hindsite had been seeing a lot of grunge in the coolant overflow. Cleaned the cooling system twice in past few years. Plugs never showed a problem