Re: O/T Engine Overheating

Posted by Bob on April 23, 2007 at 08:14:05 from (69.178.229.154):

In Reply to: O/T Engine Overheating posted by Ken-in-K on April 23, 2007 at 07:19:11:

Spark plug heat range has NOTHING to do with your problem. Plugs too "cold" will foul, plugs too "hot" will cause pre-ignition and detonation, and burned spark plug tips.

Late ignition timing will make an engine run HOT, with hot exhaust.

However, since the heat is localized to the area of a cylinder or two, could you have the spark pluk wires out of order to a couple of cylinders?

How about an intake leak making a cylinder or two run LEAN, with the resulting HOT exhaust?

Or, a bad exhaust valve or scored cylinder, causing poor compression, and unburned gasoline entering the exhaust manifold, where it burns, causing HEAT?

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