quick question!!

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05-12-05, 06:10 PM

fc3sfreek

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quick question!!

yea i kno its a stupid question. but which spark plug do i take out to check the compression, leading or trailing? and what should the reading be for good compression?

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05-12-05, 06:55 PM

WAYNE88N/A

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Trailing (top)...

Should have at least 85 psi, each face, each rotor, per the book. Personally I think anything below 90 is bad...

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05-12-05, 10:50 PM

Cybaster

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i've heard from some people on the forum saying that the "piston" compression tester is not suited for rotary engines, but the rotary compression tester is like 100+ dollars... is this true or do all of you use piston compression testers anyways?