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gixxer750king · 05-19-2010, 08:58 PM

ok the bike idles great but when i rev to about 3k rpms it get real jumpy and starts vibarating badly. i have changed spark plugs check fuel headers injectors. motor mounts. cant seem to figure out what it could be. though it was a rod or a barring but it doesnt make and clinking noises or anything. does any one have a idea. would be helpfull. by the way its a 2000 gsxr 750

Dr_Sprocket · 05-20-2010, 03:41 AM

Quote:

Originally Posted by gixxer750king

ok the bike idles great but when i rev to about 3k rpms it get real jumpy and starts vibarating badly. i have changed spark plugs check fuel headers injectors. motor mounts. cant seem to figure out what it could be. though it was a rod or a barring but it doesnt make and clinking noises or anything. does any one have a idea. would be helpfull. by the way its a 2000 gsxr 750

Does it do it in neutral when revving > 3000 rpm, or only when you are moving at > 3000 rpm?

seruzawa · 05-20-2010, 05:55 AM

Have you tried riding it with the rear wheel on the ground?

Kenneth_Moore · 05-20-2010, 06:45 AM

Quote:

Originally Posted by gixxer750king

ok the bike... it get real jumpy and starts vibarating badly. any one have a idea.

Have you noticed the bike hanging out with new "friends" lately? Has it's sleeping and eating habits changed? It sounds like what the kids call "crank" or "Angle Dust." It's cheap, available, and the symptoms fit.

Take the time to sit down with the bike and have a serious talk about drugs. It's never to late to be a Dad.

seruzawa · 05-20-2010, 07:38 AM

Seriously, sounds like the EFI is screwed. Better take it to someone who can diagnose it like the dealer.

The_AirHawk · 05-20-2010, 07:51 AM

Probably the PCM functionality of the TPMS. Could be the MAP/MAF, or an IATS. Try going to TCBY, ask the BMF behind the counter for an IOU.

gixxer750king · 05-20-2010, 08:12 AM

no it does it anytime the bike gets to 3k rpms either moving or in neutral. any clue

Kenneth_Moore · 05-20-2010, 08:25 AM

It probably needs a sync job. Unless you're a pretty good wrench and own a manometer, you'd best take it to a nearby shop and have it done. Probably $200 or so.

gixxer750king · 05-20-2010, 08:45 AM

the bike ran fine. i was riding yesterday and it got up to about 8k rpms red lines at 14k. and it started doing it so there not out of sinc

Dr_Sprocket · 05-20-2010, 08:54 AM

Quote:

Originally Posted by Kenneth_Moore

It probably needs a sync job. Unless you're a pretty good wrench and own a manometer, you'd best take it to a nearby shop and have it done. Probably $200 or so.

I thought only carb'd bikes required "sync-ing". The 2000 GSX-R was/is fuel injected. I agree with Seruzawa that the EFI is probably messed up. I'd take it to a dealer. Those bikes should run as smooth as anything around.

05-19-2010, 08:58 PM	#1
gixxer750king Registered Member Join Date: May 2010 Posts: 15	clean idle. jumpy on the gas ok the bike idles great but when i rev to about 3k rpms it get real jumpy and starts vibarating badly. i have changed spark plugs check fuel headers injectors. motor mounts. cant seem to figure out what it could be. though it was a rod or a barring but it doesnt make and clinking noises or anything. does any one have a idea. would be helpfull. by the way its a 2000 gsxr 750

05-20-2010, 05:55 AM	#3
seruzawa Robby Join Date: Nov 2001 Location: 8501 ft. Posts: 16,803	Have you tried riding it with the rear wheel on the ground? __________________ I've seen things you people wouldn't believe. Attack ships on fire off the shoulder of Orion. I watched c-beams glitter in the dark near the Tanhauser Gate. All those moments will be lost in time, like tears in the rain.

05-20-2010, 07:38 AM	#5
seruzawa Robby Join Date: Nov 2001 Location: 8501 ft. Posts: 16,803	Seriously, sounds like the EFI is screwed. Better take it to someone who can diagnose it like the dealer. __________________ I've seen things you people wouldn't believe. Attack ships on fire off the shoulder of Orion. I watched c-beams glitter in the dark near the Tanhauser Gate. All those moments will be lost in time, like tears in the rain.

05-20-2010, 07:51 AM	#6
The_AirHawk Founding Member Join Date: Jun 2007 Location: Livin' in a Van: down by the Mariana Trench Posts: 10,891	Probably the PCM functionality of the TPMS. Could be the MAP/MAF, or an IATS. Try going to TCBY, ask the BMF behind the counter for an IOU. __________________ *Parfois, on fait pas semblant* Sometimes, it's not pretend Oderint Dum Metuant Let them hate so long as they fear политики предпочитают безоружных крестьян Politicians Prefer Unarmed Peasants Nothing to see here, Citizen. Move along now...

05-20-2010, 08:25 AM	#8
Kenneth_Moore Registered Member Join Date: Jun 2007 Location: VIsiting the GIft Shop in the Pit of DIspair Posts: 7,118	It probably needs a sync job. Unless you're a pretty good wrench and own a manometer, you'd best take it to a nearby shop and have it done. Probably $200 or so. __________________ www.kennethmoore.org

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05-20-2010, 08:12 AM	#7
gixxer750king Registered Member Join Date: May 2010 Posts: 15	no it does it anytime the bike gets to 3k rpms either moving or in neutral. any clue

05-20-2010, 08:45 AM	#9
gixxer750king Registered Member Join Date: May 2010 Posts: 15	the bike ran fine. i was riding yesterday and it got up to about 8k rpms red lines at 14k. and it started doing it so there not out of sinc