Calling all wrenches - motorcycle rejet gone bad

Posted by Lizzie on July 26th, 2007

So the saga continues with my bike. I attempted a rejet and it just isn’t working right now. Here is the deal…

On my bike board some guys put together an extensive rejetting matrix for my bike which I followed. I bought a DynoJet rejet kit and a Uni filter. I did the rejet and it seemed pretty easy, so I fired it up and took it around the block. About half way it started to bog down and black smoke started pouring out the tailpipe.

My man helped me push it back home and we tore it down again. It looked fine but was obviously running too rich. I tried to lean it out a bit by moving the needle a notch. That didn’t work. Over the next couple of days we tore that down and rebuilt it about 20 times. Finally someone suggested that one of the super tiny o-rings in the carberator might be missing (or bad) so I went to the dealer and ordered another freaking o-ring. One week later it came in.

Last night I went back and again tore the carb down again, put the o-ring in and fired it up. After dialing in the idle I thought everything would be good, but when I put it in gear (while holding in the clutch) the idle dropped significantly, the bike sputtered and died complete with a small puff of black smoke coming out the tailpipe. (It was like a bad cartoon.) I pulled the spark plugs and they were black, so I know it’s still rich.

I don’t want to give up and have to bring it into the shop. Tons of people rejet their bikes all the time so I should be able to also. Right now I need some advice which is where you guys come in.

I still think it is running too rich so should I:

  1. move the needle down a notch
  2. change my pilot jet from 150 to something else - if so what?
  3. change my plugs
  4. pay someone to do it
  5. set the bike on fire and claim an “Act of God” to the insurance people

Seriously, I am at my wit’s end. Argggggggg!!!!!!!

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2 Comments

  • Darel Abbott said:

    I bought a rejet kit for my VS-1400 Suzuki 1999 and am considering not installing after reading your rejet debacle! What did you do to correct the problem?

  • Lizzie said:

    Well, I’ve torn my bike down a multitude of times. I finally got it running but it still has some problems. I suspect that I will need to adjust the needle again.

    But don’t let my problems dissuade you from rejetting. From what I can understand, it’s not something that happens to everyone and it could be model/year specific.


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