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Old November 13th, 2014, 11:11 AM   #5
Ghostt
in your machine
 
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Name: Scott
Location: Summer Shade, Ky.
Join Date: Oct 2014

Motorcycle(s): 98 Ninja 250/F12 aka ZX-2R "SERENITY", 91 Ninja 500/A5 aka ZX-5R "Phoenix", 84 Honda GL1200A "SIREN"

Posts: A lot.
Blog Entries: 25
MOTM - Jun '17, May '16, Mar '15
I agree, running a good fuel cleaner/conditioner, Chevron is a great choice, or SEAFOAM.

Does it have fuel filter?, also check all vacuum lines, check for cracks, holes etc..... When in doubt, change them out. How's the air filter ?

Adjusting the pilot screws is easley done, just take your time, and be sure that ALL adjustments are done with the bike fully warmed up, if you don't do this, proper tuning is a complete waste of time.

Warm it up, turn 1 side pilot screw in until the rpms drop, then back out till RPM's peak (and no further)* Twist throttle...see how it reacts...tweak to taste.
Repeat on other side... test ride. You're looking for best throttle response and transition from just cracked to 1/4 throttle opening or so.*

Thats a quickie, 10 cent tutorial on setting pilot screws.**

While your in the neighborhood check the fuel petcock as well,


PETCOCK TEST
install a fuel hose from the petcock fuel outlet into a catch can. Pull the vacuum hose from the engine side. Leave it connected to the petcock.*

Now...petcock set to on.... fuel should NOT be flowing. Apply suction to the vacuum hose (which is connected to the petcock ONLY) ...fuel should now flow.*

Make sure the vacuum line doesn't have any pinholes or cracks!
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