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Post by rotaryking541 on Jun 19, 2008 3:33:12 GMT -5
So here's the deal. I finally got my 1980 SR500G running last month after an expensive/extensive overhaul. I ran it for about 150 miles in all. When I returned home, I accidentally dumped the clutch and it died. No problem, I simply kicked the bike back over and continued to ride into my garage. However, when I was about to kill the bike it went from a 1100 rpm idle to 0 without any stuttering. It just died. I tried kicking it back over but to no avail. I checked for gas and IT IS receiving fuel. I then checked for compression and (unfortunately the hard way) discovered that indeed, IT HAS compression. So I tested the spark plug to check that I was getting a spark but it DID NOT spark. I replaced the spark plug with a new one but it still did not spark. So I had a spare coil that I bought with the bike that was brand new and swapped it out but also did not solve the problem. Any ideas guys? Any help or suggestions is appreciated! Thanks!
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Post by solo2racr on Jun 19, 2008 3:39:10 GMT -5
I'm not 100% sure that this will effect the spark or not but my first thought is to check the key between the flywheel and the crank.
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Post by jdbrees on Jun 19, 2008 7:02:38 GMT -5
Start with the easy stuff first - check the connections on all of the ignition related wires. An immediate shutdown with no sputtering sounds like a loose connector or broken wire.
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Post by rotaryking541 on Jun 19, 2008 14:22:56 GMT -5
Okay, I will check this weekend. I will get back to you then and see if there is any changes.
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Post by wotavidone on Jun 20, 2008 1:17:18 GMT -5
Unplug the kill switch?
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Post by caferacercarl on Jun 21, 2008 18:58:56 GMT -5
Low speed circuit in the stator is a common one after the bike has had a period of no use then used again, costs about $80 to have rewound and should then last forever
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Post by rotaryking541 on Jun 24, 2008 14:14:26 GMT -5
Good news everyone! The bike works! However, there is a downside to this. I ran the bike around the block and in a parking lot and felt a loss of power as if it wanted to die. Then it started backfiring sometimes and surged. It died on me about 10 times in a half hour period of riding. I think that the timing may be off just a smidge. Any ideas?
Oh, and I removed the spark plug and found that it was running rich (aka black plug). I was thinking that it could also be due to improper gap measure in the plug. Anyone know the specs for what the gap is supposed to be? I will also check the air/fuel ratio as that may be a cause too.
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