Question about 1999 kawasaki VN 800 A Vulcan

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1999 VN800A runs rough and backfires at high RPM.

I just bought a 1999 VN800A. It runs rough and backfires at higher RPM's, but idles OK. I was last run in Phoenix (800 ft altitude) and is now in Reno (4500 ft altitude). I was wondering if it could be jets, and if so what jet I might need.

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  • n3722r Jun 18, 2009

    I actually just ordered the Dynojet kit for it, and it comes with a few different jets. However I wasn't sure this was the problem. I will try the DJ130 and see what happens.

    Thanks!

    Dave


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If it lives above 4000 ft then it will need re-jetting.
Is it stock or does it have a dynojet kit? If dynojet then you need the DJ130 main jet.

Posted on Jun 17, 2009

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