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Old 04-20-2007, 06:53 PM   #1
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NisAznMonk's Avatar
Join Date: Jul 2006
Location: Okinawa, Japan
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Posts: 72

Honda CB400 Super Four

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idle problems

My 1992 Honda CB400 Super Four runs awesome when the weather is warm, but it can't even hold an idle when its cold. I tried pulling the choke halfway down to see if it would help warm up the bike, and the engine just stalls.

I was taking the motorcycle ERC course yesterday on my Honda, and everything was awesome. From 7:30am to 12:30pm it ran great. We took a 30 minute lunch and when I came back to start the bike it wouldn't turn over. After few tries I had to turn the throttle as I pushed the starter button and I had to continually roll the throttle to keep the bike going. As soon as I let the throttle go it would automatically die. AND yes I had gas in the tank

What could be wrong? This is the 2nd time its happend in 2 weeks. The first time the previous owner rode the bike to the safety course just fine. The next morning it was cold and raining and the bike just wouldn't hold an idle. Has anyone ever experienced this?

I'm thinking that the carb is clogged up. When I tried pulling the choke down half way it would just die everytime. I don't know much about the choke lever, but from my understanding it cuts off some of the air and your engine warms up with fuel. If the engine shuts off while I pull the chock that would hopefully mean that the engine wasn't getting enough gas? Could I be wrong?
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