Furnace Cement Exhaust Leak

If your furnace exhaust pipe or flue pipe is leaking it can be a sign of a much bigger problem.

Furnace cement exhaust leak.

Jack up the car. Find the leaking area by imparting pressure on the tailpipe and. I ll be taking the experimental way out and plastering the leak with furnace cement sodium silicate sometimes known as muffler mender or whatever all without loosening a bolt. Well my father always used furnace cement on most any exhaust component that leaked manifolds pipes mufflers etc i dont think its realy the best thing but it did work surprisingly well on some of the old junk we have i usualy preffer to clean it up real well with a heavy wire brush on the grinder then use some copper based never seize on the surface put on very liberly seems to help alot with minor leaks unless theres actualy material eroded away in large areas rather than just pitting.

Since furnace cement is not an organic glue but rather a refractory glue it can handle the high temps the manifold will reach. Since the engine is in the car high temp furnace cement was used to fill the blind hole in the. Here s what to look for. Enjoy the videos and music you love upload original content and share it all with friends family and the world on youtube.

If it leaks water it could be leaking flue gases it needs to be taken apart and completely re done with new fittings. Once you locate the leak use a steel toothed brush to scrub the area surrounding it. Scrub the area surrounding the leak with a steel toothed brush. Find the exhaust leak.

Before you start the process ensure that you have the right protective gear and follow the steps below. Will need to let it cure a few days so it is strong before you try to fire it up. Most repairs will not stick or seal if done over dirt and grime. Might try furnace cement.

Because the exhaust is located on the underside of the vehicle it often gets caked with mud dirt and rust. Exhaust leaks are common when combining a manifold of this vintage with later cylinder heads.