Go Back   Motorcycle Forum > Motorcycle.Com General Discussion > Motorcycle Mods and Maintenance

Reply
 
Thread Tools
Old 05-19-2010, 09:58 PM   #1
gixxer750king
Registered Member
 
gixxer750king's Avatar
 
Join Date: May 2010
Posts: 15
Angry 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
gixxer750king is offline   Reply With Quote

Sponsored Links Remove Advertisements
Motorcycle Forum
Advertisement
Old 05-20-2010, 04:41 AM   #2
Dr_Sprocket
Founding Member
 
Dr_Sprocket's Avatar
 
Join Date: Jun 2007
Location: Delmarva Peninsula
Posts: 2,331
Default

Quote:
Originally Posted by gixxer750king View Post
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?
__________________
"Aid to the helpless indigent is civilized. Aid to the irresponsible is socially corrosive." ----- Schizuki (c. 2011)
Dr_Sprocket is offline   Reply With Quote
Old 05-20-2010, 06:55 AM   #3
seruzawa
The Toad

 
seruzawa's Avatar
 
Join Date: Nov 2001
Location: 8501 ft.
Posts: 17,461
Default

Have you tried riding it with the rear wheel on the ground?
__________________
"Make no mistake, Communism lost a big argument - one we know today as the 20th century."
seruzawa is offline   Reply With Quote
Old 05-20-2010, 07:45 AM   #4
Kenneth_Moore
Registered Member
 
Kenneth_Moore's Avatar
 
Join Date: Jun 2007
Location: VIsiting the GIft Shop in the Pit of DIspair
Posts: 7,118
Default

Quote:
Originally Posted by gixxer750king View Post
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.
__________________
www.kennethmoore.org
Kenneth_Moore is offline   Reply With Quote
Old 05-20-2010, 08:38 AM   #5
seruzawa
The Toad

 
seruzawa's Avatar
 
Join Date: Nov 2001
Location: 8501 ft.
Posts: 17,461
Default

Seriously, sounds like the EFI is screwed. Better take it to someone who can diagnose it like the dealer.
__________________
"Make no mistake, Communism lost a big argument - one we know today as the 20th century."
seruzawa is offline   Reply With Quote
Old 05-20-2010, 08:51 AM   #6
The_AirHawk
Founding Member
 
The_AirHawk's Avatar
 
Join Date: Jun 2007
Location: Leanin' Tower O' P-P-P-P-POWAAAAAAAAA!!!!
Posts: 11,491
Default

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...
The_AirHawk is offline   Reply With Quote
Old 05-20-2010, 09:12 AM   #7
gixxer750king
Registered Member
 
gixxer750king's Avatar
 
Join Date: May 2010
Posts: 15
Default

no it does it anytime the bike gets to 3k rpms either moving or in neutral. any clue
gixxer750king is offline   Reply With Quote
Old 05-20-2010, 09:25 AM   #8
Kenneth_Moore
Registered Member
 
Kenneth_Moore's Avatar
 
Join Date: Jun 2007
Location: VIsiting the GIft Shop in the Pit of DIspair
Posts: 7,118
Default

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
Kenneth_Moore is offline   Reply With Quote
Old 05-20-2010, 09:45 AM   #9
gixxer750king
Registered Member
 
gixxer750king's Avatar
 
Join Date: May 2010
Posts: 15
Default

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
gixxer750king is offline   Reply With Quote
Old 05-20-2010, 09:54 AM   #10
Dr_Sprocket
Founding Member
 
Dr_Sprocket's Avatar
 
Join Date: Jun 2007
Location: Delmarva Peninsula
Posts: 2,331
Default

Quote:
Originally Posted by Kenneth_Moore View Post
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.
__________________
"Aid to the helpless indigent is civilized. Aid to the irresponsible is socially corrosive." ----- Schizuki (c. 2011)
Dr_Sprocket is offline   Reply With Quote
Reply

« Previous Thread | Next Thread »

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump