Blue smoke out exhaust after cam swap

[spiers]

I just did a cam swap, used the patriot gold spring kit with new valve seals. New intake gaskets and bolts torqued to 35 ft lb. I have blue smoke coming out of the exhaust . Comes out all the time at idle, normal driving, wot bad. Oil pressure is normal. The car is also cutting out really bad like it's missing during driving. It ran fine for the first 2 hours or so, then started the smoking and spitting and sputtering. Any help?!

[BLOWNDFIZ]

Sound's like you didn't get one of the valve seals installed correctly. I'm guessing the reason it's not spitting and sputtering is the plug on that cylinder is completely oil fouled.

Time to tear it down and check the seals. Sucks man, sorry.

[krill]

Yepp sounds like the seals and fouled plugs :(

[Fastbird]

I agree with the valve seals, and it's running bad because it's burning the oil and whacking out the fuel trims because the computer sees one thing and does another due to the oil affecting the O2's.

[spiers]

Thanks, you guys are much more helpful then ls1tech. Well today I pulled springs on cyl 1 and 3 which were the first ones I installed. The seals seemed to be fully seated. I pulled plugs from cyl 1 3 4 and 8 and they all looked identical. Had oil on them. Compression on #1 was 165, 3 was 185, and 8 was almost 190. So does it sound like the intake is getting oil somewhere and distributing it to all the plugs? I had the oil topped off saturday and earlier my low oil light came on. Whoops.

[spiers]

Could new valve seals cause my rings to go? Do you think it could be the piston rings?

[spiers]

Ooooh boy. I sandblasted the intake manifold while it was off, and I just changed the PCV valve. There was some sand on the end of the old pcv..............

[Fastbird]

Doubt it's the rings from a cam swap. I'd grab a new set of seals and spend the time trying that given it's the big thing you changed that could have that effect. Only other thing I could think of that would readily cause oil to be entering the process would be a leak at the intake manifold to head gasket, but if the same manifold/heads that were on the car before were used I'd pretty much rule that one out. What gasket did you go with?

[spiers]

I got Felpro gaskets from Oreillys. Im scared that I didn't get all the sand out of the intake after sandblasting and that got into the rings....? Or what if the rocker studs are not fully tightened?? Is that a possibility?

[Fastbird]

I got Felpro gaskets from Oreillys. Im scared that I didn't get all the sand out of the intake after sandblasting and that got into the rings....? Or what if the rocker studs are not fully tightened?? Is that a possibility?

It is if you have ported heads and the porting broke through to the bosses. Stock heads should have an issue with that.

[spiers]

The heads are untouched. Well tomorrow I am going to replace the intake manifold gaskets and test compression on all cylinders and do a leakdown test, and see what happens...

[spiers]

I replaced the intake gaskets and did it right this time for sure. Today I seafoamed it and now it barely idles, still smokes tons, and I have low oil pressure

[BLOWNDFIZ]

I replaced the intake gaskets and did it right this time for sure. Today I seafoamed it and now it barely idles, still smokes tons, and I have low oil pressure

Oil is entering the combustion chambers from somewhere. If it didn't smoke before the seal swap then I'm 99% sure you need to redo the seals. It sucks but that has to be the problem.

[krill]

Yepp sounds like the seals once again :whistle: And the low oil pressure could be from the low/bad idle..

[spiers]

Well at idle ~20 and 70mph at 1800rpms it was ~38 which was already lower than normal. But now at idle it is ~10 and 70@ 1800 its about 25.

[spiers]

Rings are toast

[AChotrod]

Damn that sucks!! Sand in them? Thats why im scared to SB anything.