one plug not firing

[gtxrt]

The valve spring is off and the valve seal looks good. going check spring pressure. has to be the intake gasket hopefully. thanks for all the help guys. I got messed up starting out chasing a fuel problem till you guys set me straight and said oil problem.

 

[ruffcut]

Let us know what you find

 

[gtxrt]

valve springs were 926-16 110 seat 320 open with a .060 shim at 500 lift. rather have more seat and less open. they never floated with the small solid cam went to 5600 rpms. intake gasket is next.