plugs not firing? 83 Aspencade 41k miles


Information and questions on GL1100 Goldwings (1980-1983)
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nastyal
Posts: 8
Joined: Sat Oct 29, 2011 6:35 pm
Location: Live Oak, Fl.
Motorcycle: 1983 GL1100 Aspencade

plugs not firing? 83 Aspencade 41k miles

Postby nastyal » Sat Oct 29, 2011 7:02 pm



After having my carbs rebuilt, but a short time later it started runing as if the carbs were out of sink, It seemed to get gradually worse over a few short rides. I at first thought there was a problem with the rebuild of the carbs. I thought I should check a little deeper. Being I had the original plug wires I thought maybe I should change them so I did to High temp copper type cut your own. One of the radio supressors link in the plug wire was giving me a different read with a meter so I ordered and replaced it.

With all that No improvements, in addition I'm getting a pop or back fire every now then. Running even worse now?? Pulled the plugs one by one and checked for spark. Both rear plugs have no spark. Front two plugs spark but may be on the weak side ( no real bright blue flash I'm not sure but it might be the normal spark). I believe the problem may be the Left coil which feeds spark to the rear plugs. How can I check it before I purchase a new one? Is there a way to check it. Or is there somthing else I should look to?

It would be nice to be able to use it again, One of my problems I let it sit too long!!



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virgilmobile
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Re: plugs not firing? 83 Aspencade 41k miles

Postby virgilmobile » Sat Oct 29, 2011 10:16 pm

Each coil has a separate feed wire,for testing,they can be reversed.TEST only.the bike also has 2 pulse coils,one for each coil pack.with a bit of work,they also could be wire swapped for testing.There is(on the fuel injected model)a crank angle sensor(coil) in the front but it usually kills the entire ignition.The pulse coils can be OHM tested on the bike.A electrical testing manual can be found here.If you can't find what you need or get stuck,just post again. :D

nastyal
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Location: Live Oak, Fl.
Motorcycle: 1983 GL1100 Aspencade

Re: plugs not firing? 83 Aspencade 41k miles

Postby nastyal » Sun Oct 30, 2011 12:39 pm

Thank you for the reply. I'll check it out and see if I can find the feed wire to the coil, so I can reverse the coils for the test. Good Idea, I'll get back on it on Monday and hopefully I can run the test to isolate that in fact it is the left coil that's the problem. I'm sure that it's probably still available to be bought new?

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virgilmobile
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Re: plugs not firing? 83 Aspencade 41k miles

Postby virgilmobile » Sun Oct 30, 2011 1:10 pm

Or used.there are a lot of pieces out there,including some on this site parting out their bikes.Just be sure you get the same parts as different years MAY use different coils.

nastyal
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Location: Live Oak, Fl.
Motorcycle: 1983 GL1100 Aspencade

Re: plugs not firing? 83 Aspencade 41k miles

Postby nastyal » Mon Oct 31, 2011 12:10 pm

Thanks again for the responce! I'm back at it today. I removed the aircleaner and set aside the airshock compressor to get at the coils. They are mounted onto the frame with 2 bolts. Took the bolts out and I then could get at the top of the coils where each one has 2 wire connections. The left coil which sparks the rear plugs had a blue wire and the Right coil had a yellow wire. Also each one shared a white and black connection. I switched the blue to yellow and found that the left coil for which was not producing a spark was now working. So it appears that the coil is not the problem. But the spark unit is the problem. The problem is there are 2 spark units and each has a seperate colorcoded harness that it plugs into 2 identical plugs same colors. Is there a way to test the spark units? Unless I unplug one and test the front and back plugs for spark. And plug the secound one into the same pigtail and do the test again?? Any suggestions?

nastyal
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Motorcycle: 1983 GL1100 Aspencade

Re: plugs not firing? 83 Aspencade 41k miles

Postby nastyal » Mon Oct 31, 2011 2:34 pm

I tried testing the spark units by unpluging and cross pluging together and individually. I did manage to get some spark. But the more I checked the results kept getting worse. I now can't get any spark to neither the front sparkplugs or the back sparkplugs. At this point I am not really sure which way to go??

I guess I'll start with replacing both spark units The originals are( OKI MPS-200 #2762-425 ) I'll need two of them.

I'm not sure why I'm having so much trouble? I read in the service manual about never to hook up the battery backwards or it can damadge a lot of the electronics.

When I went to pick up my bike at the repair shop after they rebuilt the carbs (4 months ago) the battery was run down too low to start it. So they gave it a jump from a car battery that was on a hand truck. The guy who jumped it hooked the jumper backwards for a secound, could that have started the problem. It has gotten worse with each use. to now?????

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virgilmobile
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Re: plugs not firing? 83 Aspencade 41k miles

Postby virgilmobile » Mon Oct 31, 2011 3:01 pm

I'd start by hooking it back up original to see if the spark returns.And yes,attaching a jump box backward can damage electronics.at the time you swapped the modules(which is a good test)the battery may have been weak,producing a weak spark.put it back and charge the battery and test again.It sounds like your on the right track.If you can't find replacement parts quick,I think I've got a set of pulse coils and modules left over from my restore

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virgilmobile
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Re: plugs not firing? 83 Aspencade 41k miles

Postby virgilmobile » Mon Oct 31, 2011 3:05 pm

Please don't throw parts at it.Use your/our diagnostic skills and spend your extra money on more bling :D

nastyal
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Re: plugs not firing? 83 Aspencade 41k miles

Postby nastyal » Mon Oct 31, 2011 3:28 pm

Ok, I'll hook it back original , charge the battery better and see where I'm at?

nastyal
Posts: 8
Joined: Sat Oct 29, 2011 6:35 pm
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Motorcycle: 1983 GL1100 Aspencade

Re: plugs not firing? 83 Aspencade 41k miles

Postby nastyal » Mon Oct 31, 2011 4:18 pm

Virgil, I've got it all back to original. I have unpluged and put contact lube on all contacts and the battery is spinning the motor but no spark front or rear plugs.
The original spark units are OKI MPS-200 number stamped on the sides are 2762-425, If you have 2 good one's let me know $$, my e-mail poetrypja@windstream.net
I'm leaving town on Tuesday am will be back Sunday late. Thanks again!

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virgilmobile
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Re: plugs not firing? 83 Aspencade 41k miles

Postby virgilmobile » Mon Oct 31, 2011 6:19 pm

No spark at all?wiggle the kill switch and check the ignition fuse.I think it's a 10 amp.with the key on,the 2 common wires should have 12 volts.

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virgilmobile
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Re: plugs not firing? 83 Aspencade 41k miles

Postby virgilmobile » Mon Oct 31, 2011 8:45 pm

Here's a post.He says that he also has a bunch of parts.....viewtopic.php?f=9&t=8810

nastyal
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Re: plugs not firing? 83 Aspencade 41k miles

Postby nastyal » Mon Nov 07, 2011 9:06 pm

Got back Sunday late, I got caught up with mail and bills, but had no time to devote to the bike. Found out a very close friend of the family is in a coma and not looking good.
Spent most of the day getting the car ready to head to Wis. to help where we can. Will be leaving Wed. early for probably two or three weeks. The bike will have to wait till then. Hope I can remember where I left off (Ha Ha). Oh, I know check the ignition fuse for one? Thanks for the comments! I'll get back on when I get back!

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virgilmobile
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Re: plugs not firing? 83 Aspencade 41k miles

Postby virgilmobile » Mon Nov 07, 2011 9:58 pm

Best of luck to you.Be safe.

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jcruzan
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Re: plugs not firing? 83 Aspencade 41k miles

Postby jcruzan » Sat Nov 26, 2011 10:00 pm

Sounds like you need a good service manual, all of the ways to test all of these components are described in detail.

I have some downloadable manuals here http://www.frn.net/cruzan/honda/

Good luck
JOHN




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