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September 21st, 2023, 07:12 AM
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#1 |
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ninjette.org newbie
Name: a
Location: Indiana
Join Date: Nov 2022 Motorcycle(s): 2016 Ninja 300 ABS Posts: 2
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2013 Ninja 300 Pumping oil into air box?
We have a 2013 ninja 300 at the shop that we are in the process of converting into a track bike. We keep running into an issue where it will pump a ton of oil into the air box while running at higher rpm’s. We took the airbox completely out and cleaned it. Then we drained the air box after taking it out for a session at the track, and about 1/4-1/2 a quart of oil came out. It wasn’t overfilled, and it hasn’t been dropped. The only other solution I could find is bad piston rings, but compression is good with 210 for cylinder 1 and 215 for cylinder 2. Anyone have any ideas on a fix?
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September 21st, 2023, 09:38 AM
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#2 |
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ninjette.org certified postwhore
Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot.
MOTY - 2018, MOTM - Nov '17
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Oil level between lines on sight-glass with bike level?
Only place oil can be coming from is crankcase vent to airbox hose. There should also be drain line at bottom of airbox to drip out this oil. If these aren't working properly and you can't resolve, run crankcase vent to catch-can. Then dump out between sessions. Buys you time while you troubleshoot. https://www.amazon.com/Universal-Res...dp/B0BB9N5MSL/ |
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September 21st, 2023, 11:08 AM
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#3 |
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ninjette.org newbie
Name: a
Location: Indiana
Join Date: Nov 2022 Motorcycle(s): 2016 Ninja 300 ABS Posts: 2
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Oil is at the proper level. It actually pumped so much out that it was at the low line when we brought it back in. It’s being pumped up the crankcase breather. I’ll definitely check out that catch can though. If we do that we can at least ride it for the time being.
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September 21st, 2023, 07:36 PM
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#4 |
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ninjette.org member
Name: Frederic
Location: Quebec City
Join Date: Jan 2020 Motorcycle(s): 08 Race Prepped ZX-10r, 09 Race Prepped Ninja 250 (300 motor). 74 Norton Commando 850 (Project) Posts: 54
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you could try to take the cylinders compression. You might have some blow by.
(Sorry, just saw that you did) Last futzed with by Fred659; September 22nd, 2023 at 04:09 AM. |
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September 21st, 2023, 09:29 PM
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#5 |
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ninjette.org certified postwhore
Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot.
MOTY - 2018, MOTM - Nov '17
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Yeah huh? That compression seems kinda high...
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