Thread: leake down tester
02-04-2008, 10:23 PM #1
leake down tester
Can i make a leak down tested out of some brass T fittings, an a air guauge, then hook it up to my compressor an pump the engine up to 10psi? In theory it should work.
02-04-2008, 10:42 PM #2
Sure will! That's mine, just $7 worth of parts at NAPA, and my fancy pressure gauge. If you unscrew the business end of most pressure gauges, you'll find a 1/4" NPT thread fitting, makes it easy! Hardest part of the whole deal is finding a gauge that will read accurately at the low pressures necessary. McMaster Carr sells tons of 'em.
Speaking of pressure, be sure to dial your compressor WAY down before you do this, don't wanna overpressurise your cases. I use a small inline regulator for this, but it's not necessary, just turn the line pressure gauge down on your compressor, and bleed the hose down before you start.
Here's a pic of my setup:
Last edited by delagem; 02-04-2008 at 10:44 PM. Reason: where's my darned pic?
02-04-2008, 10:48 PM #3
02-05-2008, 12:03 AM #4
I used a low side acetylene guage.(1/8" pipe thread) Measures 0-15 psi before the red area. 15 is in the middle of the guage, and should be pretty accurate.
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