My first post here so help me out guys!
Jagarrett369 wrote: I have a 1974 Yamaha Dt250. The oil pump is disabled and only use premix. The bike is new to me but here goes. I mixed 32:1 and it smokes like a meteor going down the road. What is a safe but non fouling mixture?
My first post here so help me out guys![/quote
I use 32:1 on my premix on my 2 strokes don't have autolube. it is the best compromise between good engine life and performance. your pipe may be clogged up with two stroke goo. in That case I burn out my pipes with a torch. the bike may had been babied too much and this causes the plugged pipe problem. none of my bikes smoke that much running with the 32:1 oil gas ratio.
Jesus is Lord!
Your question is basically opening the proverbial "can of worms" regarding oils and oil mixtures.
Are you sure you mixed the oil and gas correctly? 32:1 is not an excessive amount of oil and I wouldn't go any leaner myself. How many ounces of oil did you add per gallon of gas? (or whatever units of measure you used).
(adding 32 ounces of oil to one gallon of gas is something I've seen before)
Oil type can make a difference... most modern two stroke oils are relatively "smokeless" but you didn't say what you're using.
Running (fuel mixture) rich on premix due to a clogged air filter or something on premix will cause excessive smoke... even the "smokeless" oils tend to smoke a little on a cold engine...
If a bike has been sitting for a long while or just has a lot of old oil deposits it can take a good hard run to clean it out... Not unheard of to have someone jump on a bike that hasn't been ridden in a long time... maybe had extra oil added in storage... ride it 100 feet and proclaim "excessive smoke"... and start making all kinds of changes when the cure might be just riding it good and hard a while. Not enough information given to know.
One important thing is if the clutch side crank seal has gone bad the engine could be drawing in and burning trans oil. Keep an eye on the trans oil level... if you know what the two stroke oil you've chosen for premix smells like when it burns you can often tell a trans leak because most oils used for the trans smell a lot different if burned... usually terrible in comparison. Hard to tell by smell if you don't have experience though.
P.S. It's often when the smoke stops that you have to worry.
Jesus is Lord!
MarkT wrote: P.P.S. I type too slow.
You type just fine. I just worked the button like the latest Jeopardy champion, who now, I see, has met his match and lost.