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Posted on Jan 14, 2011
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Engine will run ok from cold but once warm particularly in traffic the engine will misfire and stall. on the open road when the trottle is open at speed there is no evidence of any problem until travelling in slow traffic when the engine will loose misfire and even stall.

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  • Expert 91 Answers
  • Posted on Jan 15, 2011
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Joined: Jan 08, 2011
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Hello,

There could be several things that would cause your problem;

Wrong spark plug gap - too wide
CDI - The capacitive-discharge ignition uses capacitor discharge current output to fire the spark plug.
Bad gas

I would start by stabilizing your fuel to see if this is the issue. Buy a can of Sea Foam and a bottle of Sta-bil fuel stabilizer. Follow the directions on both of these items when filling your tank (use both together). Use premium fuel when filling up for this time. Run a full take through your system. When filling up again, you may use a lower grade of fuel if you want, but use the Sea Foam again. The Ethanol added to fuel these days can cause valve deposits that will lead to engine issues. You don't have to use the Sea Foam in every tank of fuel you buy - just use it once or twice a month.

Hope this helps. If you find this information helpful, please vote on this post.

Regards,

Oz

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