wont start, backfires - Yamaha Raptor Forum
Yamaha Raptor Forums

» Recent Threads
New stator, now...
Today 07:07 AM
by fergie8
Last post by fergie8
Today 07:33 PM
4 Replies, 30 Views
Best places to go ride...
04-09-2014 10:16 AM
Last post by HK 45 Nut
Today 07:27 PM
3 Replies, 39 Views
May ROTM Finalists
Yesterday 03:04 PM
by Fogledw
Last post by Bkroll84
Today 07:24 PM
9 Replies, 171 Views
Carbon covers
03-25-2014 08:12 PM
Last post by HK 45 Nut
Today 07:23 PM
4 Replies, 65 Views
Best headlight bulbs...
Yesterday 06:44 PM
Last post by morphrider
Today 07:12 PM
8 Replies, 59 Views
Yz250f top end build
03-26-2014 08:47 PM
Last post by morphrider
Today 07:09 PM
14 Replies, 127 Views
Hey everyone
Today 06:10 PM
Last post by mondo6611
Today 07:03 PM
3 Replies, 13 Views
Rear brake adjustment...
Yesterday 08:43 PM
Last post by TeenWolf
Today 06:22 PM
18 Replies, 89 Views
Inconsistant Tire Sizing
Yesterday 03:12 PM
Last post by ridgerunnerseoinc
Today 06:07 PM
3 Replies, 43 Views
2007 raptor 700 frame
Today 05:57 PM
Last post by 7raptor7
Today 05:57 PM
0 Replies, 14 Views
» Sponsors
Go Back   Yamaha Raptor Forum > Raptor 660 Categories > General 660 Discussion

Reply
 
LinkBack LinkBack Thread Tools Display Modes
Old 11-17-2010, 10:56 PM   #1 (permalink)
Member
 
j567488's Avatar
 
Join Date: Sep 2010
Location: Hooper, NE
Posts: 49
Default wont start, backfires

Ok heres the deal. Bought a 660 from a buddy of mine..... don't remeber for sure what year it is. Awhile ago I looked up the vin but I can't remember for sure. Think it a 2001. Its white and black.
Anyway, before all of this, I got it and it would start really hard. always took awhile sometimes needed to use the battery charger to get it going. But it would start and run fine, after it warmed up it would always have a high idle, not just a high idle but a really high idle. Almost like quarter throttle.
I thought it was the carbs cause he said he hadn't ran it in a year. So.......tonight I took the carbs off and cleaned them. Did a bunch of research to make sure I did it right. Took a lot (A LOT) of time putting them back on to make sure the boots where right.
Now it seems like it wants to start but all it does is backfire. Got a new spark plug and it does the same thing. Seems like when I put the Choke on it "wants" to start more, but at the same time it backfires worse.
Any help please.
j567488 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 11-18-2010, 10:42 AM   #2 (permalink)
VIP

 
Banshee2Raptor's Avatar
 
Join Date: Apr 2010
Location: NEPA (Clarks Summit PA)
Posts: 2,406
Send a message via ICQ to Banshee2Raptor
Default

Quote:
Originally Posted by j567488 View Post
Ok heres the deal. Bought a 660 from a buddy of mine..... don't remeber for sure what year it is. Awhile ago I looked up the vin but I can't remember for sure. Think it a 2001. Its white and black.
Anyway, before all of this, I got it and it would start really hard. always took awhile sometimes needed to use the battery charger to get it going. But it would start and run fine, after it warmed up it would always have a high idle, not just a high idle but a really high idle. Almost like quarter throttle.
I thought it was the carbs cause he said he hadn't ran it in a year. So.......tonight I took the carbs off and cleaned them. Did a bunch of research to make sure I did it right. Took a lot (A LOT) of time putting them back on to make sure the boots where right.
Now it seems like it wants to start but all it does is backfire. Got a new spark plug and it does the same thing. Seems like when I put the Choke on it "wants" to start more, but at the same time it backfires worse.
Any help please.
Clean the carbs again . Raptor carbs are very very picky. Wate mods are done to your bike, or is it bone stock ?. Also adjuust your valves, they have a habit of geting worn tight & will not start when cold or start very hard..
__________________
01 Raptor 686R, Willykiller 3 Pluger...2nd build under construction
Banshee2Raptor is offline   Reply With Quote
Old 11-18-2010, 11:11 AM   #3 (permalink)
Senior Member
 
rynb15's Avatar
 
Join Date: Nov 2008
Location: St. Louis MO
Posts: 332
Default

deff clean the carb again. when i had my 660 it sat for 6 months and same thing. i could not get the jets clean enough. there is a yamaha dealer down the street from me so i just bought new jets. put them in and it ran better than new.
__________________
06 700

Full HMF Exhaust
Alabracing fuel controller
Pro-Tech moflo lid,twin air filter
yfz450 shocks,protaper bars
rynb15 is offline   Reply With Quote
Old 11-18-2010, 11:33 AM   #4 (permalink)
Member
 
j567488's Avatar
 
Join Date: Sep 2010
Location: Hooper, NE
Posts: 49
Default

I was told it has one less tooth on the front sprocket, the pipe doesn't have a name or logo on it but its not stock, doctor d reverse, the parking brake wire is disconected, the more I'm looking into this problem the more I'm learning about whats all done to the quad. I'm going to get new jets today and adjust the valves tonight. I'll lett you know how it goes.
j567488 is offline   Reply With Quote
Old 11-18-2010, 12:49 PM   #5 (permalink)
VIP

 
Banshee2Raptor's Avatar
 
Join Date: Apr 2010
Location: NEPA (Clarks Summit PA)
Posts: 2,406
Send a message via ICQ to Banshee2Raptor
Default

Quote:
Originally Posted by j567488 View Post
I was told it has one less tooth on the front sprocket, the pipe doesn't have a name or logo on it but its not stock, doctor d reverse, the parking brake wire is disconected, the more I'm looking into this problem the more I'm learning about whats all done to the quad. I'm going to get new jets today and adjust the valves tonight. I'll lett you know how it goes.
Best of luck to ya. A pic or 2 would help to tell wate kind of pipe you have...How bout the air filter ? Any hols drilled in the lid ? Snorkel on or off ?
__________________
01 Raptor 686R, Willykiller 3 Pluger...2nd build under construction
Banshee2Raptor is offline   Reply With Quote
Old 11-18-2010, 06:50 PM   #6 (permalink)
Member
 
j567488's Avatar
 
Join Date: Sep 2010
Location: Hooper, NE
Posts: 49
Default

STARTS!!! Adjusted the valves, that seemed to solve the starting problem. Now I have gas pouring out of the overflows of the carbs. The idle is really high still. I put the choke on and it seemed to want to idle, so I guess that means its running to lean Ordered a carb rebuild kit today, still gonna try to take the carbs apart again and see if that works.


Any other ideas??
j567488 is offline   Reply With Quote
Old 11-18-2010, 06:53 PM   #7 (permalink)
Member
 
j567488's Avatar
 
Join Date: Sep 2010
Location: Hooper, NE
Posts: 49
Default

oh yea, there are no holes drilled in the airbox. looks stock to me. when i was at the dealer today i looked at the exhaust break down pic and it appears i have stock
j567488 is offline   Reply With Quote
Old 11-18-2010, 07:37 PM   #8 (permalink)
tmc
Git-R-Done

 
tmc's Avatar
 
Join Date: Jun 2010
Location: pittsburgh pa
Posts: 713
Default

Quote:
Originally Posted by j567488 View Post
STARTS!!! Adjusted the valves, that seemed to solve the starting problem. Now I have gas pouring out of the overflows of the carbs. The idle is really high still. I put the choke on and it seemed to want to idle, so I guess that means its running to lean Ordered a carb rebuild kit today, still gonna try to take the carbs apart again and see if that works.


Any other ideas??
floats might be stuck
__________________

'01 Raptor 660R, Monster Duals, ASV Levers, Flexx Bars, YFZ Shocks, YFZ Front Calipers, Lonestar +2 Arms, Pro Design Shifter, K&N Air Filter with Outerwears, (No air box) Tusk Extended Axle, Vito's Jet Kit with Dynojet needles, JTM, Roll Design +2 Steering Stem, Bling Star Front Bumper, Scotts reusable oil filter, Hiper Wheels, TUSK nerfbars w/integrated heelguards.
tmc is offline   Reply With Quote
Old 11-18-2010, 09:11 PM   #9 (permalink)
Member
 
j567488's Avatar
 
Join Date: Sep 2010
Location: Hooper, NE
Posts: 49
Default

OK!! First of I'm a f ing idiot, me and whoever screwed it up in the first place.

SOOOOO.......cleaned the carbs again and that stoped the fuel leaking problem. Adjusted the valves so it pops off right away. AS FAR AS THE HIGH IDLE. I didn't see that the damn idle screw is BROKE OFF..... Got a new one coming, gonna have to figure out how to get the broke one out cause its so f ing coroded in there. So for right now i just filed off a little bit on the stop end and it is running fine. Need a new throttle cable also cause this one seems to be sticking. But when i have the cover off where i can get at the cable on the side of the carbs, after i start it and it does that high idle i just mess with the butterfly "valve" and it returns to normal. I think i have it set well enough to get me threw the weekend.

THANK YOU ALL VERY MUCH FOR YOUR HELP. I just need to look more carefully at the details.

Thanks again,
Josiah
j567488 is offline   Reply With Quote
Old 11-18-2010, 11:59 PM   #10 (permalink)
Master of the Electron

 
QuadManiac's Avatar
 
Join Date: Apr 2007
Location: San Diego, CA
Posts: 12,535
Default

So nice when the story ends happy!
__________________
'01 660 Raptor, Burgard +2+1 arms, YFZ Shocks, LSR anti-vibe, CTR pipe, jetted, K&N
'01 Polaris Scrambler 400, K&N
'02 Honda 400ex, Big Gun pipe, jetted, K&N, Lonestar +2 A-arms, Lonestar anti-vibe
'02 Honda 400ex, DiamondJ +3 A-arm widener, Lonestar anti-vibe
3 scooters - 150, 180, 250
'73 Yamaha CT3-175 Enduro (currently under restoration)
'08 Can-Am Spyder SE5 - my Baby!
And the newest toy destined to suck up all my spare time and money: 2000 Jaguar XJ8
QuadManiac is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

Thread Tools
Display Modes

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
Trackbacks are On
Pingbacks are On
Refbacks are On


Powered by vBadvanced CMPS v3.2.2

All times are GMT -5. The time now is 07:54 PM.




Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.1
Content Relevant URLs by vBSEO 3.6.1
Inactive Reminders By Mished.co.uk and FTP-Anime.com