Snap-on Leak Down Tester - Dual Gauge

Ed Wright · 10-24-2015, 08:53 AM

I still have an old Sun percentage of leakage tester, one gauge. I have never seen one of those cheaper two gauge units I thought was correct. No two appear to give the same numbers. Usually low. I have seen 2% on those when you can hear air out of the crank case breather. My Sun would show 6% to 8% on the same cylinder. Only thing that would show 2% on mine would be some Total Seal gapless rings. Also had one built into one of my big Sun engine Analyzers, both read the same. Be worth it if you could find one.

10-24-2015, 08:53 AM	#6
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: Snap-on Leak Down Tester - Dual Gauge I still have an old Sun percentage of leakage tester, one gauge. I have never seen one of those cheaper two gauge units I thought was correct. No two appear to give the same numbers. Usually low. I have seen 2% on those when you can hear air out of the crank case breather. My Sun would show 6% to 8% on the same cylinder. Only thing that would show 2% on mine would be some Total Seal gapless rings. Also had one built into one of my big Sun engine Analyzers, both read the same. Be worth it if you could find one. __________________ Ed Wright 4156 SS/JA