faulty ignition coil? - Yamaha Raptor Forum

» Recent Threads
What are the three...
Yesterday 10:05 AM
Last post by raptor660r101
Today 12:55 PM
9 Replies, 92 Views
Need Help - Totally...
09-05-2014 05:58 PM
Last post by badlukrappy
Today 10:54 AM
45 Replies, 704 Views
Need new axle??
08-07-2014 04:54 PM
by Cueto
Last post by Cueto
Today 10:20 AM
37 Replies, 685 Views
Hand guards, e- brake??
Yesterday 09:16 PM
by rwjjr
Last post by morphrider
Today 09:07 AM
2 Replies, 30 Views
Raptor of the Month...
Today 06:00 AM
Last post by morphrider
Today 09:06 AM
3 Replies, 65 Views
LSR axle / stock locknut
09-18-2014 10:20 PM
Last post by Pacific Barbarian
Today 08:58 AM
13 Replies, 115 Views
Methanol Conversion 39mm...
09-03-2014 04:15 PM
Last post by alky660raptor
Today 08:34 AM
27 Replies, 362 Views
Raptor of the Month...
09-15-2014 04:47 AM
Last post by DustyRappy
Today 06:02 AM
20 Replies, 523 Views
top speed
07-25-2014 10:16 PM
by tmurph
Last post by willykiller
Today 01:23 AM
13 Replies, 440 Views
Streamline stick...
Yesterday 10:41 PM
Last post by Midwayusa
Yesterday 10:41 PM
0 Replies, 28 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: 12,684
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: 12,684
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: 12,684
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 12:58 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
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