intake gaskets leak

[datpimp1]

i have a 1994 cutlass supreme 3.1 intake and heads were done about nov of last year with the felpro orange bead gaskets. now when the engine gets hot it smokes a little and u get a burning smell . so i checked it out and its oil coming from the intake gaskets on the side of the engine ( where its v shaped and u can see the side of the gaskets) and i was just wondering if maybe tightening the bolts would help ? and i didn't know oil would leak from there ? any advice whould be appreciated

[GTP Dad]

You can try to retorque the bolts to see if any of them came loose. If the are all tight you may need to replace the intake gaskets again.

[datpimp1]

ok well i was looking around for the torque spec than i heard it was a revision so do u know the spec for the bolts? also the old intake bolts were used i dont no if that matters , and i do have to torque the vertical bolts first right. i know im asking alot of questions but i do appreciate it

[GTP Dad]

My book says a two step process, initial torque at 15 foot pounds and then 24 foot pounds after the initial torque. If you are checking the torque then I would just check the 24 foot pound number.

Based on what you mentioned in the first post it seems that the seals at the end of the manifold have either not been installed properly or were sealed properly on the ends. If you have to replace them again make sure to seal the ends of the rubber gaskets with the black silicone that comes with the gasket kit.

[maxwedge]

updated specs are for the new bolts and gaskets that GM now has avialable, but I believe the 94 3.1 is not included in this issiue.

[datpimp1]

ok its not leaking where the rtv is but ill check it out . so 24 foot pounds for all the bolts , so does the vertical bolts come first ?

if so also let me ask u this just say the bolts arent tight enough do i loosen the horitontal bolts so i can make sure the vertical bolts are tightened first?

[GTP Dad]

Don't actually loosen anything. Remove the phlenum from the top of the intake manifold and start in the center working back and forth across the intake to retighten the bolts. Do this in and X pattern and you should be fine. Unfortunately I don't have a picture to post for you to see the pattern.

[datpimp1]

ok i got what your saying ill tighten the horizontal bolts in a x pattern then when they're tight ill do the horizontal bolts in a x pattern ?

[GTP Dad]

That is correct!

[datpimp1]

thanks i appreciate it

[datpimp1]

Ok one more question i looked in a gm book and i know i said 3.1 and thats whats everyone calls em but arent they really called 3100 (94-97).

Im asking this because the gm book says (3100) 115in in-ibs (9.5 ft pounds)

and 3.1 (288 in Ibs) 24 ft Ibs

[GTP Dad]

The 3.1 designation is just an easy way to say 3100. In cc's 3.1 Liter is equal to 3100 cc's. They are truly the same engine. I don't know why the book states the torque specs that way. I got the information from a Haynes manual that I posted earlier.