2005 raptor 660 problems need help - Yamaha YFZ450 Forum : YFZ450, YFZ450R, YFZ450X Forums
  Yamaha YFZ450

Suzuki Z400

Suzuki LT-R450

Kawasaki KFX450

ATV Videos

Can-Am DS450
LinkBack Thread Tools
Old 10-13-2010, 10:09 PM   #1 (permalink)
Junior Member
Join Date: Oct 2010
Posts: 5
Default 2005 raptor 660 problems need help

Ok so my raptor 660 will not start and all it does it turn over and over and then backfiers but wont start. i can jump it and it runs great and then it will start after i ride and shut it off but if i let it sit it just does not start and always backfiers what could cause this and has any one else had a problem like this with theirs
kevinjez is offline   Reply With Quote
Sponsored Links
Old 10-22-2010, 08:44 PM   #2 (permalink)
Senior Member
2004mxyfz450_racer's Avatar
Join Date: Sep 2004
Location: Wisconsin
Posts: 1,225
Send a message via MSN to 2004mxyfz450_racer

Check your carberator pilot jet. Also check your electrical like the coil, ground wires, stator, check for good spark, etc. Cold starts are rough and hard for fourstrokes like the raptor 660, but can be tuned to work better. I don't know anything really about the Yamaha Raptor 660R, but I'm just trying to help. Maybe give you something to look at.
2004 Yamaha YFZ450-Parting out

Last edited by 2004mxyfz450_racer; 10-22-2010 at 08:46 PM.
2004mxyfz450_racer is offline   Reply With Quote
Old 10-22-2010, 08:49 PM   #3 (permalink)
timothy102385's Avatar
Join Date: Sep 2010
Location: ky
Posts: 66

my 01 660 raptor was getting like that i had to put a needle jet in one of the carbs.
timothy102385 is offline   Reply With Quote
Old 10-22-2010, 09:16 PM   #4 (permalink)
Senior Member
leveldrummer's Avatar
Join Date: Dec 2007
Location: south of atlanta, GA
Posts: 7,356

why the hell is this in the yfz maintenance section?

moved for ya.
leveldrummer is offline   Reply With Quote
Old 01-15-2011, 01:57 AM   #5 (permalink)
Junior Member
Join Date: Jan 2011
Location: ft smith arkansas
Posts: 12

like already stated check carb and clean look for bad orings and worn needle jets......while ya got it that far apart and because itll be the next thing on yer list to look at go ahead and adjust the valves while youre there......simple on the 660 theyre not shims theyre old skool screw an nut......replace plug add fresh fuel an oil change, verify battery good and fully charged service air filter an go go go...
ktmoffroad72901 is offline   Reply With Quote
Sponsored Links

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

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 10:04 AM.

Powered by vBulletin® Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.1
YFZCentral.com is an independent Yamaha enthusiast website. Content on YFZCentral.com is generated by its users and YFZCentral.com is not in any way affiliated with Yamaha Motor Corporation, U.S.A.