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Vicariousness

Rb25de+t compression results

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140 is sort of low for an NA, but the fact that they are even suggests that the motor is fine.

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7 minutes ago, GTSBoy said:

140 is sort of low for an NA, but the fact that they are even suggests that the motor is fine.

Thought it was kinda low to. Any thoughts on why it is that low?

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Operator technique, quality of gauge on the tester, lack of lubrication on the bore walls.....or it could just be a little worn.  But coming out even at a a slightly low number is not very commonly linked to an evenly worn engine, if you know what I mean.  They don't usually wear that evenly.

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Do all other plugs need to be pulled when performing the pressure test. Or I guess if not all out will it change results.

 

Edited by Vicariousness

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Yes all plugs out and throttle held wide open while cranking. A battery in good condition also helps.

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Why did you do the test? Do the results actually matter in any way?

 

I mean if the engine runs good thrash it. Don't worry about comp test numbers.

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