A REVIEW OF ENGINE VALVE TAP ADDITIVES

Your motor's filthy gasoline ingestion valves, or exhaust valves - or valve adjusters - nicknamed lifters cause the sound. When so soiled, movement slows down their snappy up and down closing pace. Tapping resultsInstructions: You include three items demonstrated, the drive for a single 7 days. Add another three a week later at an oil adjust. That'