burnt PAMCO after high rpms

Hello, I'm new to the forum and have used the site a lot to gain information. You guys are all awsome and have helped me alot already. Heres my first post. I've been building a 1981 xs650 bobber for a few months now. It's nearly complete but I can't get it to run right. I need your guys help to determine what's happening. I have original carbs with bigger jets in it due to a yo momma exhaust swap and different filters. The bike had no TCI box so I went the mechanical advance PAMCO rout. After wiring the bike up with some help and being sure the bike started right up. Long enough to set the timing and it sounded great. I thought I was nearly done. After running the bike for a little in the garage just idling I gave it some decent revs of the throttle. Still sounded great. I haven't ridden yet due to the fact I still have work to do to it. I gave it another hard twist of the throttle to make sure it was responding well. It revved high then cut out. Now I have no spark at all and don't know what happend. It's like revving it high sent to much voltage to the PAMCO and fried it or something. Please help me if anyone has experienced this. It's a 1981 xs650. New spark plugs, new coil, new advance and all. All other components to the charging system are stock. Fuses didn't pop either.

Welcome to the forum, jasonrblank.

My first thoughts are vibration. Check for power getting to the Pamco, check its grounding, reseat fuses in their holders...

I had everything soft wired in place to just start it before I made the official wiring harness. So checking all connections and my Fuses was easy. Basically re wired it all over again to make sure it would start and dismiss lose connection or something. Unfortunately still has no spark at all now. What things could cousin the pamco plate to burn out or just stop working?

One thing could be a momentary high voltage spike...

Check the voltage going to both the coil and the red wire to the PAMCO. The fuse holder on that model are famous for failing with no outward sign of a blown fuse. The fuse holder just fails and makes bad contact to the fuse resulting in a hot fuse which causes the fuse element to burn out from the heat, but it still looks good. You have to use an Ohmmeter to check it or just substitute a new fuse.

Ok, pamco Pete. I get 12vdc on one side of my coil when checking to ground then I get 11 vdc when checking the other side of the coil to positive. When checking the red wire from the PAMCO to ground I also get 12 vdc. We're do I go from here?

I hope this thread hasn't been forgotten already. I'm still here trying to figure out what my problem is. Everything is wired correctly and I am getting voltage at both the coil and the PAMCO. No spark though. Please, please, what is the next step. Do I need a new PAMCO already?

Have you already gone through all the other troubleshooting steps?

http://www.yamahaxs650.com/testing_the_pamco_and_coil.htm

Hello. It's been a a while. Anyways. I appreciate all your help. Unfortunately my bike still will not spark. After all my trouble shooting I have yet uncover the problem. My only guess now is the pamco. I don't have any bad things to say about it. It worked fine at first. I was in contact with pete this entire time aswell. After going through the steps it seems I've lost contact with him. I know there is supposed to be a warranty on them. I'd just like to get mine repaired or replaced is all. Any idea were pamco pete went. I know he's pretty busy so I have hard feelings. It's just we were in contact all the up until this point. Id hate to purchase anotherone.

I have no hard feelings*

jasonrblank,

PM for warranty.

Wow. Thank you for the quick response. I'm acually trying another coil I had to be certain it's not the brand new one. I will message you if I have t after this. Thank you again

Pamco pete. I've tried PM you twice now for the warranty info. I haven't received anything back from you.

jasonrblank said:

Pamco pete. I've tried PM you twice now for the warranty info. I haven't received anything back from you.

Click to expand...

Good luck. He told me he was going to send me a new one, then ignored my messages for weeks. Had to put his name in a thread title for him to respond. Ended up spending more money on his pamco from Mikesxs. . More money in his pocket.

Call him out on a thread. You might get a response. Then good luck after that.

http://www.xs650.com/forum/showthread.php?t=45818