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1991 kdx250 smokes too much?

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I have a 1991 kdx250 and whenever it’s running it has to much oil and smoke coming out of the pipe. So what can I do to make that stop?

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Check your float height also. I chased around for ages trying to eliminate splooge only to discover that firstly my exhaust packing was soaking wet with water (poor washing technique and really wet race conditions) and after repacking with no improvement that my float heights were too low, went up to 17mm (I think) from 14mm, now virtually gone.

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Also, make sure it is not burning the transmission oil (the Clutch side Crank seal) if it is out will make it smoke like a freight train...

You may want to make sure you are not losing oil in the transmission.

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