ninjette.org - View Single Post - Help with a 1986 Ninja 250 that will not rev up

DannoXYZ · September 18th, 2021, 05:04 PM

Yes try shimming needles to see if it improves, or gets worse. This would be useful data. Also do you have access to wideband-O2 with datalogging?

Oil-pressure relief valve may be clogged. Search for oil-pressure mod with shimming spring for slightly higher oil-pressure.

I had issue on my track bike with oil-pressure light always coming on 15-minutes into each and every session. Tried all sorts of different oil brands and weights. Finally found Motorex was only stuff that worked at track.

September 18th, 2021, 05:04 PM	#61
DannoXYZ 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	Yes try shimming needles to see if it improves, or gets worse. This would be useful data. Also do you have access to wideband-O2 with datalogging? Oil-pressure relief valve may be clogged. Search for oil-pressure mod with shimming spring for slightly higher oil-pressure. I had issue on my track bike with oil-pressure light always coming on 15-minutes into each and every session. Tried all sorts of different oil brands and weights. Finally found Motorex was only stuff that worked at track.