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My bike starts without the choke on, and smokes?????? HELP

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My bike ( 2006 RM 250 ) seems to be running well! I have put over 5 hours of track time on it since I bought it ( bought it used) . It has started without the use of the choke since I bought it. I was reading some threads and was concerned that I should need the choke in order to start it, and perhaps its running to rich on start up. My bike has also started to smoke....just started this morning. I am thinking its because I changed my ratio from 36:1 to 32:1. The gas sat for over a week before I put it in. would that cause the smoke. I am going to try some 36:1 tonight and see if that makes the difference. Any other advice would be great!

Ken

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My bike starts all the time without the choke, especially if it is warm out. Your bike is probably running a little rich so check the plug and rejet if needed. I run 32:1 for mx, very little or no smoke. It also might be the oil you are using as well.

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mine smokes w/ choke on too , clears after choke off, only need choke on first start up for the day and starts 1 kick rest of day w/ no choke

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i cant believe how many people run 32:1 that just seems like too much. I always ran 50:1

I always run the factory specs. There's a reason they want you to run 32:1. 50:1 is just too lean for me to race with. I might do 50:1 if I was doing tight woods riding. Amsoil has that new oil out now where you run it 100:1. Now that's nuts!

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Your pilot jet may be too rich if it's starts easily with no choke, smokes, spooges.

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Like KX02 said your pilot jet is too rich. I run Motul at 40:1, never had any problems. Learned that from a guy who raced two strokes for quite a few years.

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