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Power Strokes
7.3 Tech
Compression test results
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[QUOTE="jvc1990, post: 1450885, member: 12351"] harbor freight compression testers will not produce correct numbers. that's what I started with. I ended up buying a tester from Snap-On. I used the grease hose and fittings to hook up tester from hf. the grease hose had spots on where it was starting to bubble on the side of the hose. the harbor freight tester was off by at least 40psi.im sure if you had something better than hf brand your comp numbers would be better. some things from hf are good, not the compression tester. [/QUOTE]
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