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600rr cuts out at full throttle?

magis702010-05-17 16:12:54 +0000 #1
Whenever i open up my throttle wide open in the meat of the powerband(8 to 10k) it cuts out for a second almost like the clutch is slipping and then continues to rev once its past that. I thought this was the case and put in new frictions and springs last fall, but its still doing it this year. What could it be?

Its fine if i gradually roll on the throttle, but if im rolling on hard out of a corner, or bang down a few gears and pin it to pass on the highway it will cut out at that critical moment.

Last week i took off from a stoplight and tried to bang out a few gears at WOT and it would cut out right at 9-10k in every gear. Some douch in a luxury car thought i was trying to race him and ended up passing me because of it. No biggie but im just trying to illustrate the problem.

If anyone can help it would be appreciated. Thanks.
Purplekawi2010-05-17 16:29:06 +0000 #2
A clutch slipping will cause the rpm's to suddenly sky rocket. cutting out sounds almost electrical.
silverD2010-05-17 16:19:18 +0000 #3
maybe dirty fuel filer, or weak fuel pump., assuming your bike is injected.
kivyee2010-05-17 16:48:34 +0000 #4
Cutting out as in the engine hesitating? Especially if it's dependent on throttle position, it sounds like a fuel issue to me. When did it start happening?

I'd also check the plugs, and see what they look like.
rgm2010-05-17 16:31:55 +0000 #5
Do you have a power commander?

If you do, disconnect it and try it without it.

If not, check all the usual suspects like loose battery cables, loose connection at the kick stand switch, loose connection at the tip over sensor etc.

It sounds like an electrical issue.
magis702010-05-17 18:41:06 +0000 #6
Quote:

Originally Posted by rgm

Do you have a power commander?

If you do, disconnect it and try it without it.

If not, check all the usual suspects like loose battery cables, loose connection at the kick stand switch, loose connection at the tip over sensor etc.

It sounds like an electrical issue.

Its definetly throttle position dependant. It only happens using hard wide open throttle, not under normal use. Basically if you were to try and power wheelie it, it would hesitate right at the point when the front would start to lift, instead it cuts power for a second and nothing happens.

No power commander. Just a hindle full system and stock air filter. It was doing this before i changed the exhaust so thats out.
magis702010-05-17 18:56:37 +0000 #7
Quote:

Originally Posted by kivyee

Cutting out as in the engine hesitating? Especially if it's dependent on throttle position, it sounds like a fuel issue to me. When did it start happening?

I'd also check the plugs, and see what they look like.

Ive never checked the plugs since i bought it a year ago. Its an 04 with 28,000k's on it so i figured why bother. It has been crashed before by the previous owner though. I just finished rebuilding it over last summer.
bandito2010-05-17 16:54:30 +0000 #8
What about when the bike isn't under load...

Not that it's good for your engine if repeated over and over, but if you

rev it up in neutral in your garage, does it cut out at the rpm as well?

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