I need know how mash compression if my carr is good bicouse not ruans good
Hi there, I'm AL the owner of Big As Auto Repair.
When performing a compression test on each cylinder they must be within 25% of each other or this will cause the engine to run bad. However, if you have a compression reading of say 120, 125, 115, and 120 PSI then you have something else causing the engine to run bad. If you need further assistance go to my website below. Have an awesome day! Auto Repair
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