ninjette.org - View Single Post - Low Compression On A Cyclinder, Should I Replace Piston Rings?

nocturncal · February 13th, 2020, 04:59 PM

I did the piston soak. Couldn't warm the engine up yet, carbs don't come back till tomorrow, but I got some improved compression test-wise.

Pre soak:.
Cylinder #1: 155 psi
Cylinder #2: 160 psi

Post-Soak:
Cylinder #1: 164 psi
Cylinder #2: 169 psi

Gained 9 psi on both cylinders!

February 13th, 2020, 04:59 PM	#9
nocturncal ninjette.org member Name: Cal Location: San Francisco Join Date: Jun 2017 Motorcycle(s): '09 Ninja 250R Posts: 180	I did the piston soak. Couldn't warm the engine up yet, carbs don't come back till tomorrow, but I got some improved compression test-wise. Pre soak:. Cylinder #1: 155 psi Cylinder #2: 160 psi Post-Soak: Cylinder #1: 164 psi Cylinder #2: 169 psi Gained 9 psi on both cylinders!