Reply to thread

Message: [QUOTE="Faded, post: 905045, member: 38322"] The Motion Pro unit that retails for well over $200 tests pressure not vacuum. I've thought about making a leak tester part II that would use a Mity Vac to create a vacuum for those interested in exploring that route, even with the Mity vac supplies could be had for way less than the MP unit (I guestimated the $50ish range). I understand that as the piston is on the upstroke it creates vacuum and would suck air if leaky seals were present, but wouldn't those same seals leak as the piston was on it's desent causing the crank case to see pressure? (before the transfers are uncovered...) IMHO I think the pressure test would be more acceptable than just guessing in any case. [/QUOTE]