Do your normal compression test. All plugs out, throttle held wide open, (fuel pump disabled.) Record the numbers. Then, run the same test again, but, before you test a cylinder, add a tablespoon of oil to it. See if the numbers jump.

 

the numbers where good for the compression test. Can it be the valve guide seals going out?

 

Valve seals generally present themselves at startup. If you are getting constant blue smoke, you likely have a problem elsewhere.

 

Is it possible that valve cover gaskets can leak into manifold gasket’s???



QUOTE=HeyYou;3547041]Valve seals generally present themselves at startup. If you are getting constant blue smoke, you likely have a problem elsewhere.[/QUOTE]

 

If they were, you would have other issues as well. Oil comes from valve guides, pcv system, or past the rings. That's why I suggested the dry/wet test. If the numbers jump significantly, rings are bad. I expect them to up some... but, if its more than around a 10 psi difference... rings are on their way out.

 

How do you disable the fuel pump on the 3rd gens with TIPMs? Just unplug the connector at the fuel pump?

 

I would pull the fuse to the fuel pump.

 

Thank you....son of a gun...I never noticed the one labeled "ignition switch feed" before.