Bikemike Posted June 4, 2017 Share Posted June 4, 2017 I recently loaned a compression tester from o'reilly's and got disconcertingly low readings (100-120 psi). I was a little stumped because other tests went well and the camper was driving strong. So, after a successful 200 mile test trip I stopped into another big name auto parts store and loaned a second compression tester. 170 psi x4?. Quote Link to comment Share on other sites More sharing options...
Derek up North Posted June 4, 2017 Share Posted June 4, 2017 So how do you decide which one's right? Quote Link to comment Share on other sites More sharing options...
jjrbus Posted June 4, 2017 Share Posted June 4, 2017 Really need some kind of comparison test. I rarely use my compression tester so check gauge against my air compressor. Quote Link to comment Share on other sites More sharing options...
Bikemike Posted June 5, 2017 Author Share Posted June 5, 2017 (edited) 16 hours ago, Derek up North said: So how do you decide which one's right? Flip a coin? We'll see next week when we head to Montana, I guess. Interestingly, when I called up the oreilly's to report my findings they said, "oh yeah, that hasn't been working". Ha. Edited June 5, 2017 by Bikemike Quote Link to comment Share on other sites More sharing options...
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