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Stubborn 550E

  • Thread starter Thread starter eternal
  • Start date Start date
E

eternal

Guest
Introductions first;

My first post in this forum, REALLY glad to locate this source of entertainment... er information.

I've got a '78 GS550 that I located in a farmers storage bin. I used to ride a '76 750 so the nostalgia convinced me to buy it. At the time of purchase, the 550 was running really rough, but running. It looked like it had potential and I needed something for me to do with the boys, so I started gradually cleaning it up and putting it back together.

I'm at the point where I am trying to kick the engine over but it feels like something is really draggin internally. On testing the spark plugs, cylinder 1 & 4 don't spark. That could account for no spunk, so I immediately thought bad coil. Bought a new one and installed it, still no spark on 1 & 4. Continuity from the points to the coils is good, just wondering what I am overlooking.

This is where you guys come in. I'm not a mechanic although am not scared of learning a few new skills. So what should I be checking now?

Thanks
 
Did you check the points yet? Check for voltage at the coils? If the coil voltage is less than 10 volts, I suggest you look up the coil relay mod. If the first two things check out, you must have a wiring issue between the points and the coils. It's a pretty short wire run so it shouldn't be too hard to find.
 
testing response

testing response

Now my inexperience with motors will start to show.
Yes, I checked the points, they look clean, not rounded and are gapped properly. Voltage from the coil lead to ground runs about 9.5v on both coils. Where the heck do I locate the coil relay module? I can't even seem to find it on the wiring diagrams!!! Am I correct in assuming I trace the wire up from the points or am I out to lunch?

It's a good thing my son is only 9 years old. I might have the bike ready when he gets a license........:D
 
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