1960 Buick Lesaber

[Guest greesemonkey]

I have a 1960Buick Lesaber  It has an exhaust leak but I cant seem to locate it. Sounds like its coming from the intake manifold.

Anyone ever had this problem  Thanks in advance

[Rusty_OToole]

O probably someone has had this problem in the last 55 years. They made a lot of Buicks.

 

Why not take it to a muffler shop and get it fixed?

[John348]

Isn't there a heat riser forcing the exhaust across intake manifold under the carb? I know that most cars had them, and they can seize in a closed position, that would force a flow of hot exhaust constantly across the intake. I also believe that it passes across the intake manifold through a ported area in the base of the carb. It could be something as simple as a blown out base gasket. I am just guessing but I know the exhaust gasses are routed that way on many cars.

[60FlatTop]

Check that the manifold bolts are tight. Then check to see if someone has installed manifold gaskets. If they have one might be blown. Remove them, I don't use exhaust manifold gaskets on Buick nailheads, they tend to leak.

 

Check the heat tube for the choke as well. They can rot out.

Bernie

[61polara]

That intake manifold has a steel disk in the bottom of the manifold.  It is just like a disk freeze plug.  That has most likely rusted out.  You will need to pull the manifold, grind the punch marks staking it into the manifold.  It can be replaced with a standard disk freeze plug.  You can seat it just like a regular freeze plug.  I did this on my '60 Invicta about 20 years ago and it is still sealing.