Cummins engine problem!
I have and exhaust manifold leak on my 02 cummins ISC 350 hp engine. When they tried to remove the bolts they broke off and then had to replace the entire head after doing a pressure test. Also the tu...
Forum Discussion
jgolden wrote:
Did the shop have a theory on why the manifold leaked? Not sure what gauges you have but boost leak can cause high exhaust temps. Checking the Charge Air Cooler for leaks is a good idea. Mine had a few good sized leaks.
Haven't yet installed an Exhaust gas temp gauge or boost gauge but plan to. A stock engine should not over heat but age and wear and tear can "de-stock" one over time. Even a failed air filter can lead to shortage of air supply and high exhaust temps under high engine load.
Leaking manifold gaskets and to a lesser degree, broken bolts are fairly common on the ISC/ISL engines. Even with two piece manifolds, I see quite a few leaking exhaust manifolds. Usually repairing any broken bolts and installing new gaskets fixes them right up.
