Thread: Possible Bad LIM gasket?

I'm going to rebutt the quackers and agree with you. The UIM doesn't magically go bad on the L36, but what happens is when you remove the TB, there's a tube coming up in a hole in the manifold. Taht's the EGR tube. It heats that area in the UIM and over many heat cycles it'll crack the UIM. Well there's a coolant jacket on the other side of that plastic and it'll leak into the LIM and fill it. In the meantime, you'll burn some coolant. Well...when that crack lets go and coolant pours into the motor, you'll hydrolock.

It's a good idea to change the UIM when you do the LIM. It's also a good idea to block the coolant passages going into the UIM for the future. That way this can never happen again. See the How to on modding a LIM.

Thanks BillBoost,

Well the parts finally came in and i got to work putting it back together with the new parts i got to the UIM and it had a metal sleeve around where the EGR tube enters the UIM makeing it almost impossible to get on i ended up having to use a hammer to get it to sit on there right, well when i was tightening all the bolts in sequence i apparently got one bolt a little to tight and it cracked my brand new UIM that really ticked me off and i started to take the bolts back out to install the old UIM but when i got the new UIM off the EGR tube came out with it! My question is can i just reinstall it without that EGR tube going into the UIM?

Thanks for any info you can give me,
Tgarison