What would cause the exhaust to get so hot it melts the exhaust boots?? I did find a pebble in the water injection tube to the expansion pipe but it didn't fix my problem? Any ideas??
Blow air through the hoses one at a time. The water can come out the pee hole if it is running through the engine but not the exhaust. The water to cool the exhaust exits through a little hole towards the end of the pipe.