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

Reply
 
Thread Tools
Old 03-22-2010, 08:21 PM   #1
Launch-pad
Registered Member
 
Join Date: Sep 2009
Posts: 8
Default Ignition Problems

I have a 2003 honda xr650l and I am having troubles getting it to start. There is plenty of battery power and it turns over strong, but when I check the spark, I can't get one. Took the carb apart and cleaned it, cleaned the plug, tried a new plug, then got it to run for about 45 sec. and now no spark again. I maybe should or shouldn't have done this, but I pulled the boot off the spark plug wire and checked the spark that way and still no spark. If you have any information that would help me, it would be greatly appreciated. Thank you!
__________________
If you're not making mistakes, then you're not doing anything. I'm positive that a doer makes mistakes.
Launch-pad is offline   Reply With Quote

Sponsored Links Remove Advertisements
Motorcycle Forum
Advertisement
Old 03-22-2010, 09:10 PM   #2
seruzawa
The Toad

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

Bad connection, coil, CDI unit or pickup.
__________________
"Make no mistake, Communism lost a big argument - one we know today as the 20th century."
seruzawa is offline   Reply With Quote
Old 03-23-2010, 05:01 PM   #3
Launch-pad
Registered Member
 
Join Date: Sep 2009
Posts: 8
Default

Thank you, I'll check those out.
__________________
If you're not making mistakes, then you're not doing anything. I'm positive that a doer makes mistakes.
Launch-pad is offline   Reply With Quote
Old 03-23-2010, 10:37 PM   #4
Launch-pad
Registered Member
 
Join Date: Sep 2009
Posts: 8
Default

We checked the ignition pulse generator, it showed 457 ohms. There wasn't any continuity in the wires when grounded. When it was turned over, we got .1 volts of ac each revolution does this sound normal. My meter read .1 and I'm not sure if this is correct or not, I can't read it very well. I checked the coil and it read within limits. Assuming I'm doing it right. I think I'm going to try a new CDI. Does that sound like a good idea.
__________________
If you're not making mistakes, then you're not doing anything. I'm positive that a doer makes mistakes.
Launch-pad is offline   Reply With Quote
Old 03-24-2010, 04:36 AM   #5
pplassm
Founding Member
 
pplassm's Avatar
 
Join Date: Nov 2001
Posts: 3,875
Default

Sounds like that is the logical, if expensive next step.

I seem to recall that XR's had heat related failures of components in the lower end. YMMV.
__________________
Mongo just pawn in game of life.
pplassm is offline   Reply With Quote
Old 03-24-2010, 10:13 PM   #6
Launch-pad
Registered Member
 
Join Date: Sep 2009
Posts: 8
Default

What about the pulse generator? Could there be a problem there? I am not sure to try that or the CDI. All help would be appreciated.
__________________
If you're not making mistakes, then you're not doing anything. I'm positive that a doer makes mistakes.
Launch-pad is offline   Reply With Quote
Old 03-25-2010, 05:15 AM   #7
seruzawa
The Toad

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

Quote:
Originally Posted by Launch-pad View Post
We checked the ignition pulse generator, it showed 457 ohms. There wasn't any continuity in the wires when grounded. When it was turned over, we got .1 volts of ac each revolution does this sound normal. My meter read .1 and I'm not sure if this is correct or not, I can't read it very well. I checked the coil and it read within limits. Assuming I'm doing it right. I think I'm going to try a new CDI. Does that sound like a good idea.
Handheld meters are terrible for reading pulses. That's why they make oscilloscopes. You need a manual to tell you the correct value. But usually pickups are only a few ohms. 457 sounds extremely high.
__________________
"Make no mistake, Communism lost a big argument - one we know today as the 20th century."

Last edited by seruzawa : 03-25-2010 at 05:19 AM.
seruzawa is offline   Reply With Quote
Reply


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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off