New problem
Thread Starter
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Road Master
Joined: Sep 2006
Posts: 899
Likes: 9
From: Franklin, TN
New problem
Well guys I have a problem with my bike that just started and I haven't had time to tear into it yet but plan on starting this weekend.
The problem is the bike runs like cr#$ for the first few miles then runs fine. In that I mean it is back firing, coughing through the carb, and basically falling on it's face. The back firing is bad sounds like a gun shot and hurts your ears.
It starts fine and idles no problem. I let it idle until the top of the heads are at least warm to the touch. I have not changed anything. I've tried keeping the choke on longer and at different settings but that doesn't seem to have any effect.
I also tried a fresh tank of gas but that didn't help either.
After the first few miles the protesting is over and she runs fine.
Any ideas??
The problem is the bike runs like cr#$ for the first few miles then runs fine. In that I mean it is back firing, coughing through the carb, and basically falling on it's face. The back firing is bad sounds like a gun shot and hurts your ears.
It starts fine and idles no problem. I let it idle until the top of the heads are at least warm to the touch. I have not changed anything. I've tried keeping the choke on longer and at different settings but that doesn't seem to have any effect.
I also tried a fresh tank of gas but that didn't help either.
After the first few miles the protesting is over and she runs fine.
Any ideas??
Road Warrior
Joined: Dec 2007
Posts: 1,286
Likes: 64
From: SoCal
RE: New problem
I suspect it's in your ignition. Water corroded a connection or a connection is loose. Maybe a wire is shorting due to worn insulation or a pinch somewhere that shifts position just enough after the bike warms up to not short anymore. Or perhaps something inside the module or coil is going away.
I hope it's something simple...and cheap to fix.
I hope it's something simple...and cheap to fix.
Road Warrior
Joined: Apr 2007
Posts: 1,952
Likes: 15
From: Senoia, Ga., by way of Miami, Fl..
RE: New problem
I wouldnt suspect water because it goes away, then it appears to come back again from what he's saying. Might be a good thing to check though..
I had a problem with my Sportie that I seem to remember being like you describe. I rode it to Daytona, ran great, then all the sudden started acting a fool.. I replaced the intake gaskets and it was good as new.. For the life of me, I cant remember how I diag'd it. The dealer may have told me, but I did the work in the hotel parking lot. You could try carb cleaner from the left side of the bike, spray it lightly on the manifold to head joints and see if the RPM changes, just be careful it doesnt flame up on you..
I had a problem with my Sportie that I seem to remember being like you describe. I rode it to Daytona, ran great, then all the sudden started acting a fool.. I replaced the intake gaskets and it was good as new.. For the life of me, I cant remember how I diag'd it. The dealer may have told me, but I did the work in the hotel parking lot. You could try carb cleaner from the left side of the bike, spray it lightly on the manifold to head joints and see if the RPM changes, just be careful it doesnt flame up on you..
Thread Starter
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Road Master
Joined: Sep 2006
Posts: 899
Likes: 9
From: Franklin, TN
RE: New problem
Thanks guys, I'll let you know what I find out this weekend. That is if I get to work on it. We are having a winter storm tonight.
Not sure how bad it will be.
Not sure how bad it will be.
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