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Possibly Need New Coils?

  • Thread starter Thread starter shadley
  • Start date Start date
S

shadley

Guest
Hello again, I fixed my last problem and a new one occurred.

I have a 1978 Gs750E that I've been working on for the past few months, and I believe it's running on stock coils, and it's battery is bad, but I have been trying to wait till spring until buying a new battery.

Anyways the problem with the bike is that it's not firing in cylinder #1 anymore, at least I don't think it is. The bike was running (very poorly), and 3 of the four headers were getting hot/warm (this was today, 3/13/17), but this one cylinder. A few months back that wire broke and I thought I repaired it (it worked after i fixed it). Now it's a problem.

Would you fellas recommend that I buy a battery and coils, or just one at a time to diagnose. Either way I need to buy a battery, and coils now. Or do you think it could be another problem.

It used to run awesome a couple months ago, then it sat. Now it cannot reach high rpm's etc.

Lastly, what would you recommend I use for the coils and battery. I don't know anything about the coils, besides dyna S (it had an electronic ignition put in before I bought it, so no points)... I also was thinking about getting a bikemaster Trugel battery, or any ol' bikemaster 12v lead acid battery.

Thanks and I apologize if I'm all over the place and confusing
 
Okay I'm a doofus and I guess I was wrong with the broken wire problem. I think I may have had a connection issue between the spark plug and the wire on c #1, because it's getting power. I'm going to replace the battery, and see what happens from there. I know I should probably do the coils anyways, but it'll be next on the list. Any tips will still be appreciated.
 
Did you do, and follow the carb rebuild correctly? I know before I did I thought I was having electrical problems too!
 
Also I got a battery tender lithium ion battery off Amazon two years ago and I love it! A little more pricey but last four times as long with no maintenance. And save you 10 pounds.
 
I did follow the guide, but it's possible that I missed something. I'll take another look once I throw a fresh battery on the bike, and I'll also verify my charging system.
 
I do highly recommend the battery tender lithium ion battery, they're a little pricey but well worth it
 
New battery is on the way, and I'll definitely try the caps before buying the whole thing. I have done the valve clearance. This website has been a huge help, and I found my problem too. For some reason I gapped my spark plugs WAY too much. I may have misread something. I regapped them and boom, it sounds amazing, no lag or anything. I have not been able to ride this bike yet and I'm definitely going to finally get it registered and insured within the week.

It rains a lot in Oregon so I have a bit of time lol

Thanks!
 
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