about 2 months ago I had a bag carbon filled plug and head gasket causing the motor to blow black smoke and sputter real bad.
fixed that and it rand great until now as it is getting hard to start without pumping the gas and seems to be leaking oil somewhere from the back of the motor cauising it to blow blue smoke while driving as it drips onto the exhaust pipe. I am also getting exhaust gases back in the cooling system again.
I checked the intake, oil pan, sending unit, valve covers and they all are still dry with no leaks.
the plugs all have a light tan color to them.
Could I have another bad head gasket causing it to blow out of the gasket maybe?

 

It sounds like the head gasket failed again, what have you found from the visual inspection? were is the oil coming out from?.

 

Which head gaskets did you use last time?

Is your torque wrench calibrated?

What were the deck and head flatness measurements you recorded last time?

 

just found out from a machine shop that my heads all checked out ok with no cracks, warpage or anything. They thing im burning oil on a cylinder. But the thing is, all exhaust manifold ports are clean and no oil present, same with the spag plugs being tan.

The bellhousing/tranny under the truck is completely oil soaked, but the oil pan is dry so i dont think the rear mail seal is bad.
Any ideas on the oil leak? the head gaskets both looks ok.
Should I slap the heads back on or replace the motor?

 

also, I used the felpro severe duty head gasket before as that is all the parts store had.