i have a leak down tester with a single gauge that i bought 25 years or so ago. i have only used it once and that was when i first got it. i have been learning and doing more engine stuff lately and am thinking of playing with it again
i noticed that the new ones seem to be mostly dual gauge. So is there a difference in accuracy between the two types?
Last edited by WhyMe; 02/01/18 12:33 AM.