2stroke gurus.. need help....excessive smoke

What would be your conclusion to this problem:

Oil smelling Blue smoke (cool or warm)

Top 1/3 of the piston faces are black

Spark plugs come out looking like their old diesel engines (pure black)

Leaned it out and no diffrence

Amsoil saber or Maxima K2 @ 40:1

Re: 2stroke gurus.. need help....excessive smoke

Overpriced Parts /

Not jetted correctly through the range making for incorrect air/fuel mix.

Rejet/retune

Re: 2stroke gurus.. need help....excessive smoke

Better a video!

Re: 2stroke gurus.. need help....excessive smoke

What bike is it? In some cases it can be bad crank seals pulling oil in from the transmission. Depends on the bike though.

Re: 2stroke gurus.. need help....excessive smoke

Yea but ATF burns white. My Tomos knows all about that. This is baby blue smoke. ATF fluid is housed in one side of engine and it smokes even from both pipes.

How about oil blow by?

Re: 2stroke gurus.. need help....excessive smoke

Just clean the residue out of both pipes and run 50:1 or disconnect oil injection not both on that Yamaha... it's supposed to smoke some...this is a moped site...

Re: 2stroke gurus.. need help....excessive smoke

Except that not all bikes use ATF. One more time, what bike.

Re: 2stroke gurus.. need help....excessive smoke

1974 RD350

Re: 2stroke gurus.. need help....excessive smoke

You are aware this is a moped forum right?

In any case, the RD350 uses 10W-30 in the gearbox, and could totally be the source of your smoke. Tell me some more about how your Tomos is just like a motorcycle.

Re: 2stroke gurus.. need help....excessive smoke

Jet rattled loose.

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