Question about 2003 Honda VTX

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Bike backfires and misses.

In April 2009 I purchased a 2003 VTX 1800S. This month the bike started backfiring when I first started up in the morning (temps in the upper 50's) it sounds like in the engine not out the pipes. Since then, when letting off the throttle to slow for a curve it backfires through the pipes. It doesn't backfire or miss alot but I don't want it to turn into an expensive repair due to neglect on my part.
I checked a spark plug and it had oil on it and was black. The dealership that I bought the bike from said the oil and filter were changed when they received the bike but nothing else had been done or checked. I checked the filter--it's a little dirty but nothing major. I am ordering new plugs and an air filter. Is there anything else that I should check or replace? The bike has just over 15,000 miles on it.

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  • nickforreste Jun 22, 2009

    Tightened exhaust pipes and added the Sea Foam. I guess the Sea Foam cleaned the injectors--don't really know what it did but the bike seems to be quicker to respond to the throttle which means I like it!!!

    I don't think I have carbs.




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Run some Seafoam through the carbs. Should be available locally at a parts store. Mix with your gas according to directions. This will clean out the carbs, which sound like they are a little gummed up.

Posted on May 30, 2009


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