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Starting probs, misfiring, the usual suspects.
Ok here's the deal..
I am the proud owner of a 1980 GS550L. I've had the bike for a couple, three years and I've had these particular problems with it the whole time. It's pretty well what I believe to be stock (stock exaust, intake, etc.) Now when it's cold and the choke's on, it will (usually) start within a few cranks. But here's the strange part. When it's warm and you shut it off or it stalls, it is EXTREMLY hard to start again. You can almost forget about starting it with the starter, but the ol' push-n'-start method works will start it fine. Once you get it started it runs fine, with one exception and that brings me to my next issue. It pops out of the exause anywhere above 3500-4k rpms and has, as a result, a slight miss. I believe it's running lean on cylinder no. 1, as the rest of the exaust pipes will heat up long before no. 1 will. The problem there is I have had the carbs apart and cleaned them as extensivly as I could without a dip. And yes, that includes replacing some o-rings and cleaning the air jet and all orfices (it has the CV style carbs, of course). I've also had to deal with the dreaded R/R issues and a BBQ'd stator. Both have been replaced, but not before they cooked both of my coils, CDI box, and every bulb on the bike. (OUCH! o_O, $200) I also know that it has a pretty weak spark, but I'm gonna do the relay mod to it today, so that might help a little. Not sure if it'll help starting issues. I know I've never adjusted the valves in it, but I've only put about 300 miles on it since I got it (sad I know T_T) and the PO didn't know anything about the bike, as he never had it running. It's got 84XX miles on it, so it still has alot of life left in it. But I'm pretty well at the end of my rope with it and I'm about to give up and get rid of it, although, I don't want to. Any help would be appreciated.
Josh
I am the proud owner of a 1980 GS550L. I've had the bike for a couple, three years and I've had these particular problems with it the whole time. It's pretty well what I believe to be stock (stock exaust, intake, etc.) Now when it's cold and the choke's on, it will (usually) start within a few cranks. But here's the strange part. When it's warm and you shut it off or it stalls, it is EXTREMLY hard to start again. You can almost forget about starting it with the starter, but the ol' push-n'-start method works will start it fine. Once you get it started it runs fine, with one exception and that brings me to my next issue. It pops out of the exause anywhere above 3500-4k rpms and has, as a result, a slight miss. I believe it's running lean on cylinder no. 1, as the rest of the exaust pipes will heat up long before no. 1 will. The problem there is I have had the carbs apart and cleaned them as extensivly as I could without a dip. And yes, that includes replacing some o-rings and cleaning the air jet and all orfices (it has the CV style carbs, of course). I've also had to deal with the dreaded R/R issues and a BBQ'd stator. Both have been replaced, but not before they cooked both of my coils, CDI box, and every bulb on the bike. (OUCH! o_O, $200) I also know that it has a pretty weak spark, but I'm gonna do the relay mod to it today, so that might help a little. Not sure if it'll help starting issues. I know I've never adjusted the valves in it, but I've only put about 300 miles on it since I got it (sad I know T_T) and the PO didn't know anything about the bike, as he never had it running. It's got 84XX miles on it, so it still has alot of life left in it. But I'm pretty well at the end of my rope with it and I'm about to give up and get rid of it, although, I don't want to. Any help would be appreciated.
Josh
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