Intake manifold leaking

[Matt V]

I seafoamed by car today and I noticed that some smoke was exiting from under my intake manifold. How difficult is it to replace the intake manifold gasket? I might need some help getting it done.

[Bigsrturbo]

Easy....get one of the Thermal gaskets off eBay they are like 30 bucks keeps the temps down in the intake manifold...should be able to have it off in 20 min prob from start to finish 1 hour

[black roadster]

Unless you hear or feel an obvious intake leak, don't sweat it. I've seen that happen before with seafoam. Intake manifold gaskets rarely fail.

[SirHustlerEsq]

Unless you hear or feel an obvious intake leak, don't sweat it. I've seen that happen before with seafoam. Intake manifold gaskets rarely fail.

genuine question:
If smoke or liquid is coming through the gasket, how can the seal work the rest of the time?

[Titus]

How can the smoke come out at all? The intake manifold should be under vacuum so a leaking intake side gasket should allow additional air to be sucked in (not out). Now the exhaust side is a different story. A leaking exhaust manifold gasket will fill the engine bay with smoke during a seafoam treatment... ask me how I know!

[POS Racing]

... ask me how I know!

Titus how do you know??

[Titus]

Titus how do you know??

Smart ass. Pointer- backing the car halfway out of the garage when seafoaming doesn't keep the smoke out of the garage when you have an exhaust manifold leak. I filled the garage with smoke and the neighbor almost called the fire department.

[Rogue]

How can the smoke come out at all? The intake manifold should be under vacuum so a leaking intake side gasket should allow additional air to be sucked in (not out).

Thank you Todd!
I told him this last weekend, but what do I know.

[SirHustlerEsq]

I stand corrected.

[black roadster]

I stand corrected.

Me too. I was thinking of the exhaust gasket and they leak all the time when seafoaming. Intake manifold smoking? Not sure about that one.

[gabkwong]

Smart ass. Pointer- backing the car halfway out of the garage when seafoaming doesn't keep the smoke out of the garage when you have an exhaust manifold leak. I filled the garage with smoke and the neighbor almost called the fire department.

Whatever you, don't drive on public road until no more smoke coming out of the tail pipe! Don't ask me how I know!

[SirHustlerEsq]

Me too. I was thinking of the exhaust gasket and they leak all the time when seafoaming. Intake manifold smoking? Not sure about that one.

It also depends on how much fluid is sitting in the manifold, it could leak because I doubt there is enough compression to "vacuum" the manifold on each stroke.

[Flyin96M]

Whatever you, don't drive on public road until no more smoke coming out of the tail pipe! Don't ask me how I know!

This is why I always do this after dark. If I ever get stopped I figure I would just tell them I'm trying to kill Mosquitoes