Blowin Smoke!

76GMC1500 said:

Whoa, silicone RTV has lno place on head gaskets. It will just make a goopy mess. Use either a spray paint containing aluminum as a pigment or that copper spray on gasket sealant. Apply a light coat to both side of the gasket and allow it to dry for a couple of minutes before assembling.

Click to expand...

bclark001 said:

i read a post in here a few days ago about the water pump shaft seal somehow leaking and getting in the cumbustion chamber

Click to expand...

shotback said:

Anybody have any suggestions. I'm working on a friends (hammered)1989 Kx250. I rebuilt the top end along with all new gaskets. After I got it back together and started it, white smoke just billowed out the exhaust. It did this before I took it apart along with barely having any compression. My first thought was head gasket leak, so I removed the head and sure enough it had coolant in the cylinder. I had my machinist check both head and cylinder for flatness and they are fine. It seems that the metal gasket is not sealing properly. After 2 new headgaskets I'm ready to, eventhough I don't like to, throw a thin bead of High-Temp
silicone on the cylinder and head and "hopefully" call it good. Any help would be appreciated.

Click to expand...

Rotorranch said:

How long have you run it? It'll take a while to burn the pipe clean.

Another possibility...clutch side crank seal?

Rotor

Click to expand...