Jetting 300ex

[Towlieee]

My friend bought a used 300ex with fmf exaust, no air box lid and k&n filter..

We bought a 130 main jet and tried to rejet it but it already had a 132..

We are running 112 octane gas and the inside of the muffler is WHITE..

Didn't have a spark plug socket at my moms house to check the plug.. What should I rejet to tommorow?

I was thinking a 136?

[Cody_300ex]

Originally posted by Towlieee
We are running 112 octane gas and the inside of the muffler is WHITE.. When you run high octane gas it just does that. Its does it on my dads harley, and all his friends harleys, my 300ex, and my buddys 416.

[MichaelS693]

i have the same exact setup i have a 128 and runs the air box lid most the time but without either a 128 or 130 i think:cool: :D

[Towlieee]

I remember reading on here and someone said that racing gas is the only gas that will tell if your truely running lean or rich..

regular gas dosen't change color of spark plug or anyhting is what someone said