« Return to Thread: 2 days ago, only 1 cylinder firing, yesterday BOTH, today just 1 again. (SOLVED)

Re: 2 days ago, only 1 cylinder firing, yesterday BOTH, today just 1 again.

by stingypaperwaffles :: Rate this Message:

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Have you had any luck solving this problem? I am having a very similar problem with my '85 700. Whenever I start it (and I mean WHENEVER, even after a 2 minute stop at a gas station), it seems it is running on only one cylinder. Actually, it will be fine for the first 30 seconds or so, then it will start crapping out. It will have no power whatsoever. After it runs about 5 minutes, whether idling or riding, it will start to smooth out, then it will just take off and run perfect until it is shut off again. And I did notice once that I had a few drips of fuel coming out the exhaust right at the head, only on the front cylinder, while it was warming up one day, which leads me to think I have a misfire problem. (unburned fuel running right through to the exhaust, also backfires out the exhaust real bad during these episodes) I have rebuilt the carbs, and set the float levels and sync'd the carbs previous to this problem. It ran perfect after that, until I washed it. I know my battery isn't great, but it always starts it, and even after putting a charger on it, the bike does the same thing. I checked the resitance in the coils, primary is good, but secondary is at 18k on both of them (I think clymers says 13.2K is spec). I also checked them immediatley after I shut it off when the bike was warm and running good, still the same. I do still need to check the connections to the TCI, may have a problem there because it seems to have started right after the forementioned thorough washing. Anyway, this is real frustrating and any insights or suggestions would be greatly appreciated.

 « Return to Thread: 2 days ago, only 1 cylinder firing, yesterday BOTH, today just 1 again. (SOLVED)