faulty ignition coil? - Yamaha Raptor Forum
 

» Recent Threads
Another new guy
Yesterday 10:40 PM
Last post by Pacific Barbarian
Today 02:13 AM
3 Replies, 25 Views
Removing Swingarm???...
Today 01:07 AM
Last post by APachon71RN
Today 01:07 AM
0 Replies, 14 Views
Aftermarket Headlights
10-16-2014 10:09 PM
by w_caven
Last post by w_caven
Today 12:18 AM
6 Replies, 121 Views
Gaskets
Yesterday 02:56 PM
by w_caven
Last post by w_caven
Today 12:14 AM
4 Replies, 39 Views
03 660 mods
Yesterday 10:16 PM
by 03/660R
Last post by LJN
Yesterday 10:36 PM
2 Replies, 23 Views
Noise when clutch pulled...
05-03-2014 06:38 AM
Last post by that.dude78
Yesterday 10:34 PM
23 Replies, 457 Views
oil tank bolt broke off
10-21-2014 09:10 AM
Last post by dog86
Yesterday 10:31 PM
23 Replies, 231 Views
Fox Shocks.... Are they...
Yesterday 08:52 PM
Last post by willykiller
Yesterday 10:29 PM
4 Replies, 46 Views
Cylinder Works BB Kit...
Yesterday 07:47 PM
by jdacus
Last post by jdacus
Yesterday 10:28 PM
9 Replies, 79 Views
660 carb jetting help
08-27-2014 10:33 PM
by klhurta
Last post by willykiller
Yesterday 10:26 PM
17 Replies, 408 Views
» Sponsors
Go Back   Yamaha Raptor Forum > Raptor 660 Categories > Raptor 660 Maintenance

Reply
 
LinkBack LinkBack Thread Tools Display Modes
Old 06-30-2009, 10:47 PM   #1 (permalink)
Member
 
jwilson48's Avatar
 
Join Date: Feb 2009
Location: missouri
Posts: 58
Default faulty ignition coil?

ok guys when testing the ignition coil when testing the primary the ohms seemed to fluctuate alot and would hold alot higher than they should be. however the secondary side was reading just barely higher than the range they should have been in. so it would seem to make sense that it wouldnt be getting enough juice into the coil, but enough would be going to the spark plug. am i way off here? does the ignition coil definetly need to be replaced? should it still be getting some spark? cuz it was but has gotten worse and now no spark at all.
jwilson48 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 07-01-2009, 12:32 AM   #2 (permalink)
Master of the Electron

 
QuadManiac's Avatar
 
Join Date: Apr 2007
Location: San Diego, CA
Posts: 12,728
Default

Did you measure resistance with the orange wire disconnected?
__________________
'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
QuadManiac is offline   Reply With Quote
Old 07-01-2009, 11:55 AM   #3 (permalink)
Member
 
jwilson48's Avatar
 
Join Date: Feb 2009
Location: missouri
Posts: 58
Default

yes
jwilson48 is offline   Reply With Quote
Old 07-01-2009, 01:24 PM   #4 (permalink)
Master of the Electron

 
QuadManiac's Avatar
 
Join Date: Apr 2007
Location: San Diego, CA
Posts: 12,728
Default

Does the resistance vary as you move things around or just over time with the leads held steady? I can't imagine a scenario (with a GOOD coil) in which the resistance should vary much at all either over time or by moving the wire around...

If the coil has a finite capacitance, then you should see the resistance change a bit over time as that capacitance charges up, but the measurement should settle out to a stable value after a short time.
__________________
'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
QuadManiac is offline   Reply With Quote
Old 07-01-2009, 11:03 PM   #5 (permalink)
Member
 
jwilson48's Avatar
 
Join Date: Feb 2009
Location: missouri
Posts: 58
Default

k thanks sounds like a faulty ignition coil to me then.
jwilson48 is offline   Reply With Quote
Old 07-02-2009, 11:46 AM   #6 (permalink)
Master of the Electron

 
QuadManiac's Avatar
 
Join Date: Apr 2007
Location: San Diego, CA
Posts: 12,728
Default

From your description so far, I'd agree. Any chance of finding a friend that will let you swap to test?
__________________
'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
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 02:55 AM.




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
RaptorForum.com is an independent Yamaha enthusiast website. Content on RaptorForum.com is generated by its users and RaptorForum.com is not in any way affiliated with Yamaha Motor Corporation, U.S.A.
Inactive Reminders By Mished.co.uk and FTP-Anime.com