Join Date: Jul 2005
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Bike won't start when engine is hot? Help!
So I bought a battery tender and charged my battery last night. This morning, it started right up and I rode 7 miles to a gas station. After filling up, again the bike wouldn't start. The good news is I learned how to push-start my bike. After an 80-mile ride, I made it back home. Now the engine is cold and the bike starts right up. So it seems like the problem is that my bike won't start when the engine is hot. Is that a common problem? Does that narrow down what the problem might be?
To summarize: The battery will start the bike when the engine is cold. The battery won't start the bike when the engine is hot. But I can push-start the bike when the engine is hot.
Back in the spring, I went to start my bike, and the battery was dead. I jumped it and went on a 70 mile ride. The next morning, the battery still didn't have enough juice to start the bike, so I replaced the battery with a generic 600rr battery from Apex Battery. For a few weeks, everything was fine. Then yesterday morning, I rode to work. At lunchtime, the bike wouldn't start. I jumped the bike again, and rode home, and then let the bike idle for 20 minutes, in the hope that the battery might charge a little. Then I shut it off and went to bed. This morning, I started the bike again and then let it idle for another 20 minutes, and then I hopped on and wheeled it out of my garage. I stupidly kicked into first with the kickstand still down, so the engine got killed. After putting up the kickstand, I tried to restart the bike, and the battery is totally dead.
What the heck is going on here? I replaced the stock battery just a couple of months ago. It seems to me like my problem is likely not the battery. What are the likely culprits here? My bike is mostly stock, except for some LED signals.
Any help would be most appreciated!
Last edited by malp327; 08-16-2008 at 04:51 PM.
Reason: Retitling because I've narrowed down the problem