1991 Trailboss 250

[dharbeck]

I have a trialboss 250 I just picked up for next to nothing. It smokes like crazy but seems to run well. What causes these to smoke? I mean I know 2 strokes smoke but when I start it, it fills my garage with smoke. I only ran it for about 2 minutes because it was smoking so much. Please help!

[flotek]

jetting may be off the ring gap may be excessive allwoing blow-by also whe nyou first fire a two stroke up al lthe unburnt oil receades back into the lower transfers case you must get the rpms up enough to burn that oil residue off the next time it starts good quality oil and proper jetting make a huge difference in that

[atomicsaladbowl]

mix could be off, or crank seals could be shot, allowing trans fluid to seak in to the cylinder, jetting, like flotek said could also be off

[dharbeck]

This thing has an external tranny . tranny fluid can not get into the crankcase

[ONLY2STROKES]

let it warm up and go out run it a bit..hard..then the smoke should subdue alot.it needs to burn it out the ctrankcase and will not sitting in the garage.

[DStad]

wind it up a hole lo5t

[atomicsaladbowl]

if the tranny is external then its gotta b a jetting problem in the carb but thats typical for 2 strokes to smoke a lot on startup, so try and run it for a while

[874Q2]

I just recently got one of those trailboss and am going through the same thing,

Its oil injected, right, i havent looked at mine yet but there might be a way to reduce the mix rate, or i was thinking about draining the oil and premixing the tank,

Mine is a pos yard work quad though, 88