Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum - View Single Post - 300z engine compression test one cylinder very low

*brett* · 08-03-2016, 08:17 PM

#1 cylinder 110 psi
#2 cylinder 160 psi
#3 cylinder 180 psi
#4 cylinder 160 psi
#5 cylinder 180 psi
#6 cylinder 150 psi

I just bought the car it has 194k miles on it. im actually surprised with the pretty good PSI on most cylinders. the engine was apart when i bought it so i never was able to start it. the previous owner said there was an engine knock. im assuming valve tapping since i see thats common with these. would that be a reason cylinder 1 is so low?

08-03-2016, 08:17 PM	#1
brett Leaky Injector Join Date: Feb 2011 Location: Howell, NJ Age: 32 Posts: 105 Trader Rating: (6)	300z engine compression test one cylinder very low #1 cylinder 110 psi #2 cylinder 160 psi #3 cylinder 180 psi #4 cylinder 160 psi #5 cylinder 180 psi #6 cylinder 150 psi I just bought the car it has 194k miles on it. im actually surprised with the pretty good PSI on most cylinders. the engine was apart when i bought it so i never was able to start it. the previous owner said there was an engine knock. im assuming valve tapping since i see thats common with these. would that be a reason cylinder 1 is so low?