Low compression (120psi cly.2,4,6) 150psi cly.1,3,5

Rt300zxtt · Post by **Rt300zxtt** » Mon Sep 05, 2016 10:11 am

Does anyone know why? I checked the oil and it's fine no milky look. Also did a wet compression test on cly.2,4,6 and it read 130psi, I'm not sure where my problem is. Any suggestions, thank you in advance.

Post by **itsa300zx** » Tue Sep 06, 2016 9:05 am

Check timing belt first before tearing the engine apart. One bank(side ) showing low comp is also a sign that it may have skipped a tooth on the timing belt. Remove covers and count the number of cogs between each cam position. The FSM has a nice diagram showing the required numbers.

Post by **DCaff300ZX** » Tue Sep 06, 2016 10:42 am

^^^^This, and the fsm is your best friend for figuring out issues with our cantankerous beasts.

Low compression (120psi cly.2,4,6) 150psi cly.1,3,5

Low compression (120psi cly.2,4,6) 150psi cly.1,3,5

Re: Low compression (120psi cly.2,4,6) 150psi cly.1,3,5

Re: Low compression (120psi cly.2,4,6) 150psi cly.1,3,5

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