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HELP...I'm loosing it, Bike cuts out on restart

  • Thread starter Thread starter Anonymous
  • Start date Start date
Just a thought but maybe the spark plug? I have a honda that will do the same thing unless the timing and carbs are set perfectly every time. I would constantly foul the plug from normaly running to rich.
 
Checked the plugs numerous times and even changed them twice trying to find the problem, the plugs are always fine
 
I'm with keith-- I'm suspicious of an intake leak. Your symptoms sounded just like the ones I was getting on my 80 gs550. Strange inconsistent idle (although most of the time mine woud idle high around 3k). Fuel line... checked carbs... fixed them. Same problem. Took off carbs and took a look at my intake valves... the o-rings were totally gone-- air was getting in there no problem. Ordered new ones, put on my old intakes (still looking for good inexpensive ones.... anybody got some lying around?) and voila. Ran like she's s'posed to.
 
I got out and worked on it a while yesterday, found this, if you pull the right side plug wire off while it's running the bike dies, if you pull the left side off, it doesn't. thought ok, got a bad coil, i swapped the coils to make sure, but it still only dies if you pull the right side off, left side is sparking to the motor just not the plug, put a new plug in but didn't change a thing. What in the world is going on here?
 
Like I said in my first reply, I think you should check all the electrical connections to the ignition/coils/leads/plug caps.
You said you checked them, but your latest findings means you missed something.
 
I had a similar situation on my '80 gs750e. The issue was the vacuum line that opens the petcock was sucking air. I could not see cracks, but it would run fine, then die, then run fine, then die. New hoses, new fuel lines, new filter, now it runs great. HTH.
 
I checked all the connections, they are fine, unless there's a wire thats bad between connections somewhere, also replaced all of the fuel lines and vaccum lines. I'm looking for a repair manual, as soon as I find one this thing is getting stripped to a bare frame and rebuilt from one end to the other. Thanks for all the suggestions hopefully I'll have it back together by spring. Luckily my dad's got 4 bikes and I can ride one of those till mines up again.
 
Replace your spark plug caps and trim about a 1/4" off the ends of the leads.
Dink
 
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