February 20th, 2020, 06:05 PM
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#4
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ninjette.org guru
Name: David
Location: Fort Worth,TX
Join Date: Nov 2015
Motorcycle(s): 2009 Ninja 250
Posts: 386
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Quote:
Originally Posted by DannoXYZ
First, verify your oil-filter is not soaking with oil. Only need two-layers of spray-oil per side.
Next, with bike level and rested overnight, make sure it's not over-filled with oil. You should see bubble of top of oil-level in sight glass.
Make sure crankcase vent-tube is NOT clogged. That's tube connecting rear of engine to air-box at bottom.
Do warm compression-test first and post results here. Do dry and wet test with oil squirted down spark-plug hole. Depending upon tester used, it should read anywhere from 120-180psi.
Then do leak-down test to determine if it's rings or valves that's leaking. You might just need valve-adjustment.
Last ditch-effort, do piston-soak and see if it improves. https://www.ninjette.org/forums/showthread.php?t=343925
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one other quick question, should I still use the thinner head gasket? I wont be racing so I don't think I need the little bit extra compression. Would it be safer to go back to the stock one?
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