Thread: White smoke after LIM gasket replacement

Pressure test definitely showed leak. I'll be redoing the LIM gasket again. Thanks for the tips.

That sucks. Well at least you know what's all involved this time so it shouldn't take as long. Just remember to use the aluminum LIM gaskets from GM and sealant and you should be good to go.

And word to the wise, when removing the small bolt that holds the braket for the fuel return valve on the pass. side of the motor (bolts to the alum. engine brace), be sure you REMOVE the bolt and put it in a safe location, or you may not like where it ends up, lol... trust me. Just speaking from experience

One other thing I've noticed is that once you get the LIM to the proper torque specs, I always let it sit for an hour or so, then go back and recheck the torque. Each time I found at least 2 bolts that had loosened up a bit and had to be retorqued. So get the LIM on, then go grab some food and go back and check.

Jay