Removing carbon from heads and pistons.
Surely this is RV related since it is cutting into my recreational time. :h My 2 cyl opposed Briggs in the lawn tractor has progressively gotten noisier. It was knocking sort of like the same musi...
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Water in the intake in mist form (spray bottle works good) with the engine at 3/4 throttle for about 5 minutes, 1 spray every 30 seconds, or after the engine runs ok for 5-10 seconds after the last spray.
