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Old 06-24-2000, 09:11 PM
Leon Hernandez
Posts: n/a
Not quite, Only in a pressurized system will you 'hear' a hiss and that depends on the size of the leak. A vacuum pump will only provide a 'negative' pressure aka 'vacuum' I'm just a rookie but the pros on this forum can walk you thru the process of isolating a system to see where the system has a leak and it does not respond as expected. Your on the right track, best regards LH
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