============== email@example.com (Strollingbones)
My 1981 Toyota pickup with a carbureted 22r failed the Virginia safety
inspection for an exhaust manifold leak.
The inspectors were not very forthcoming with additional details so I
checked it myself out using the "Rubber Hose" test. Holding one end of
the hose to my ear and placing the other against the manifold at various
points, I located a hissing sound between the cylinder head and the top
of the manifold towards the rear.
I'm hopeful that I can just replace the gasket myself and be on my way
but there is one catch that I would appreciate some feedback on.
The bolts that attach the manifold to the cylinder head -- where the
leak is -- appear to be fine (rusty, for sure), but two of the bolts
that attach the manifold to the tailpipe have broken heads. I am not
detecting an exhaust leak there.
Since repairing those broken bolts is WAY beyond me, I am facing a
Can I unbolt the manifold from the cylinder head, slip in a new gasket,
bolt it back together and head on down to get reinspected?
OR do I need to find a mechanic with access to a machine shop to address
the manifold/tailpipe connection before I can address the leak between
the manifold and the cylinder head?
Thanks in advance for any advice you might share!
BEFORE........you do anything,
I would suggest that you go get a free
opinion from an exhaust shop.
If you had to use a rubber hose to find the
slight "hiss" coming from the manifold area,
I don't think the inspectors would have found
THAT particuler leak. They ain't use'n no
hose pipe to inspect em, and if it was that
slight then the likely hood is that the leak
the inspectors found was more likely one
they were hearing somewhere else.
it wouldn't cost a dime to go to one of those
overzealous, hard sell, exhaust shops and
get yourself a FREE estimate on where leaks
might be coming from...BEFORE you go
changing a gasket that you might not need
to change to past the inspection.
The exhaust shop will put it on a lift for you
and, normally, walk you underneath to point
out the failed areas. It would be more sound
diagnostics to do this, than go diving into the
manifold gasket hoping that you fixed the area
the inspectors were concerned with.