Spark I think

Message
Author
User avatar
insaneman_12
Veteran
Veteran
Posts: 82
Joined: Tue Oct 03, 2006 5:46 pm
Sex: Male
Years Riding: 25
My Motorcycle: Motorcycle

Spark I think

#1 Unread post by insaneman_12 »

Im working on a 1980 KDX 80 and the little bastrd wont run. I rebuilt the carb twice, new reeds, 155 lbs compression, new rotor. Its an old point model that has one wire running from the stator to the coil. Thats it on electrical. The stator plate holds the stator, points, and condenser. I have tried 4 stators and it runs for 2 or 3 times then wont run again. It still has spark, but not enough under compression. I unpluged the kill switch to make sure that was not the cause and nothing changed. I ran an extra ground wire from the coil to the motor to make sure ground was good. Nothing changed. Plus the coil test good on my machine. What would cause four stators to go bad like that?????? HELP PLEASE!!!!!!! I hate this bike and want it out of my shop. LOL.
71 CB 750 K1
94 PC 800
76 CB 550 K
75 TS 185
76 TC 185
63 YSA-1
06 YZ 450F
84 XL 350R
02 KX 85 with 75 XR 75 motor XR 200 sus.

User avatar
Sev
Site Supporter - Gold
Site Supporter - Gold
Posts: 7352
Joined: Sun Jun 06, 2004 7:52 pm
Sex: Male
Location: Sherwood Park, Alberta

#2 Unread post by Sev »

Stupid question. You've changed the spark plugs, right?
Of course I'm generalizing from a single example here, but everyone does that. At least I do.

[url=http://sirac-sev.blogspot.com/][img]http://i12.photobucket.com/albums/a227/Sevulturus/sig.jpg[/img][/url]

User avatar
insaneman_12
Veteran
Veteran
Posts: 82
Joined: Tue Oct 03, 2006 5:46 pm
Sex: Male
Years Riding: 25
My Motorcycle: Motorcycle

#3 Unread post by insaneman_12 »

3 times lol
71 CB 750 K1
94 PC 800
76 CB 550 K
75 TS 185
76 TC 185
63 YSA-1
06 YZ 450F
84 XL 350R
02 KX 85 with 75 XR 75 motor XR 200 sus.

User avatar
insaneman_12
Veteran
Veteran
Posts: 82
Joined: Tue Oct 03, 2006 5:46 pm
Sex: Male
Years Riding: 25
My Motorcycle: Motorcycle

#4 Unread post by insaneman_12 »

so far I have stumped 4 Kawasaki Tech. with this one and I dont want it to be the first bike I cant figure out since I was 12. LOL
71 CB 750 K1
94 PC 800
76 CB 550 K
75 TS 185
76 TC 185
63 YSA-1
06 YZ 450F
84 XL 350R
02 KX 85 with 75 XR 75 motor XR 200 sus.

User avatar
Sev
Site Supporter - Gold
Site Supporter - Gold
Posts: 7352
Joined: Sun Jun 06, 2004 7:52 pm
Sex: Male
Location: Sherwood Park, Alberta

#5 Unread post by Sev »

What happens to the stator after you've run it the 2 or 3 times? You said that it stops running after that. Which to me means that the stator stopped working? Could it be something as simple as a short in the wiring harness that's burning out your stator? Bad battery? Or a bad connection?
Of course I'm generalizing from a single example here, but everyone does that. At least I do.

[url=http://sirac-sev.blogspot.com/][img]http://i12.photobucket.com/albums/a227/Sevulturus/sig.jpg[/img][/url]

User avatar
insaneman_12
Veteran
Veteran
Posts: 82
Joined: Tue Oct 03, 2006 5:46 pm
Sex: Male
Years Riding: 25
My Motorcycle: Motorcycle

#6 Unread post by insaneman_12 »

After 2 to 3 times the spark gets weaker, but it is still there when you put it to the head. Inside the cyliner I dont think it is sparking under compression. There is no battery on this bike. I have cleaned the connections multiple times. Remeber there is only one wire from the stator to the coil. The kill botton goes to the connection that connects the stator and the coil. I have unpluged the kill switch to make sure that is not the problem. The stators test at 3 ohms at the 2k mark on the mulitimeter. Then goes down to 1-2 ohms after it runs a couple of times.
71 CB 750 K1
94 PC 800
76 CB 550 K
75 TS 185
76 TC 185
63 YSA-1
06 YZ 450F
84 XL 350R
02 KX 85 with 75 XR 75 motor XR 200 sus.

User avatar
Sev
Site Supporter - Gold
Site Supporter - Gold
Posts: 7352
Joined: Sun Jun 06, 2004 7:52 pm
Sex: Male
Location: Sherwood Park, Alberta

#7 Unread post by Sev »

I'm totally out of ideas. :(
Of course I'm generalizing from a single example here, but everyone does that. At least I do.

[url=http://sirac-sev.blogspot.com/][img]http://i12.photobucket.com/albums/a227/Sevulturus/sig.jpg[/img][/url]

User avatar
insaneman_12
Veteran
Veteran
Posts: 82
Joined: Tue Oct 03, 2006 5:46 pm
Sex: Male
Years Riding: 25
My Motorcycle: Motorcycle

#8 Unread post by insaneman_12 »

You now know what im going through lol
71 CB 750 K1
94 PC 800
76 CB 550 K
75 TS 185
76 TC 185
63 YSA-1
06 YZ 450F
84 XL 350R
02 KX 85 with 75 XR 75 motor XR 200 sus.

User avatar
Sev
Site Supporter - Gold
Site Supporter - Gold
Posts: 7352
Joined: Sun Jun 06, 2004 7:52 pm
Sex: Male
Location: Sherwood Park, Alberta

#9 Unread post by Sev »

Have you tried replacing the stator? Sounds like it's the only thing left.
Of course I'm generalizing from a single example here, but everyone does that. At least I do.

[url=http://sirac-sev.blogspot.com/][img]http://i12.photobucket.com/albums/a227/Sevulturus/sig.jpg[/img][/url]

User avatar
insaneman_12
Veteran
Veteran
Posts: 82
Joined: Tue Oct 03, 2006 5:46 pm
Sex: Male
Years Riding: 25
My Motorcycle: Motorcycle

#10 Unread post by insaneman_12 »

4 times :frusty: lol
71 CB 750 K1
94 PC 800
76 CB 550 K
75 TS 185
76 TC 185
63 YSA-1
06 YZ 450F
84 XL 350R
02 KX 85 with 75 XR 75 motor XR 200 sus.

Post Reply