miss at hgh rpm zx9 carb

Mulvaney · 7/15/13, 3:28 PM

I have a miss at high rpm. it acts like it is flooding at low and then after a few laps it starts missing middle of straight and and through turn then straightens back up for exit and half the straight. as soon as I pull off it revs good. 00 zx9 carbs on gas. plugs don't look real black and aren't real grey looks decent actually. any ideas

Andrew Martin · 7/30/13, 2:49 AM

How long since you cleaned your carbies?

Mulvaney · 7/30/13, 11:30 AM

Just did. It has 165 inner mains and 170 outers should these be the same. Stock they are not but we r running them alot different then the average bike

DAD · 7/30/13, 10:39 PM

Quote:

Originally Posted by Mulvaney

Just did. It has 165 inner mains and 170 outers should these be the same. Stock they are not but we r running them alot different then the average bike

They call that jet stager. The outer cylinders run a little hotter than the two center ones, so they run a little richer to compensate. Some engine work just the opposite has something to do with coolant flow. That is another reason why stock ram tube are different lengths.

Find factory pro's web site and research a bit. If you are running carbs on gas he also sells the best carb kits around. The instructions are better than the parts.

Honest Dad himself

7/15/13, 3:28 PM	#1 miss at hgh rpm zx9 carb
Mulvaney Member Join Date: Jul 2011 Posts: 168	I have a miss at high rpm. it acts like it is flooding at low and then after a few laps it starts missing middle of straight and and through turn then straightens back up for exit and half the straight. as soon as I pull off it revs good. 00 zx9 carbs on gas. plugs don't look real black and aren't real grey looks decent actually. any ideas

7/30/13, 2:49 AM	#2 Re: miss at hgh rpm zx9 carb
Andrew Martin Member Join Date: Oct 2011 Posts: 21	How long since you cleaned your carbies?

7/30/13, 11:30 AM	#3 Re: miss at hgh rpm zx9 carb
Mulvaney Member Join Date: Jul 2011 Posts: 168	Just did. It has 165 inner mains and 170 outers should these be the same. Stock they are not but we r running them alot different then the average bike