Could any of you gentlemen tell me the tell tale signs of a blown head gasket. Also on a 1990 60hp Johnson where are and how many heat sencors are there.
Bennett.... Poor compression on one or more cylinders could be contributed to a blown, faulty head gasket. You could also have water entering the cylinder.<br /><br />The engine has one heat sensor, located in the cylinder head. Look for a TAN wire protruding out of the head.... that's it.
Bennett,<br /><br />Gound the tan wire that goes to the sensor.<br /><br />Also, look at your spark plugs. They should all look the same. If one looks real clean, you are ingesting water.
