I suspect a mud dauber has built a nest inside the exhaust manifold.
They like the cast iron because of the minerals it supplies to their
larvae.
The cast iron mud dauber is an endangered species, so you can't just
get rid of them. Call your local Fish & Wildlife office and let 'em
know what you've found. Don't just yank off the manifold to look,
because that will likely ruin the nest. You'll want to have a trained
professional on hand, and let them do it so you don't run afoul of the
Endangered Species Act.
Happy Thanksgiving to All,
Dr. Vern
--- In WillysTech@..., "Chris Lange" <bullseye@...> wrote:
That's a good question. The heat riser on my 51 CJ3A has not moved
since I bought the jeep over three years ago. I've sprayed it with
all sorts of stuff to no avail. I've always wondered if maybe there
was something internal that was hitting.
Hope someone can help us both out on this.
