Quote:
Originally Posted by Kminor28
My Tuscany is at a Freightliner shop for repair of an extremely loud noise at the rear of the coach (diesel pusher) when idling. It goes away when I place it in drive.
Freightliner just called and said my exhaust manifold was cracked and quoted $4700 to replace it.
Any idea how I could crack an exhaust manifold on a diesel pusher class A?
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More than likely the manifold cracked due to overheating. When you make a hard climb or work the engine hard for an extended period of time, you can not keep your foot in it. The exhaust temperature rises very fast say climbing up a mountain. Most diesel engines have a pyrometer to measure the exhaust temp. It should not exceed 11/1200 degrees for extended periods.
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