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Husqvarna MX & Off-Road Dirt Bikes
2-stroke fuel in a 4-stroke motor
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[QUOTE="blackduc98, post: 1030256, member: 65764"] I did a stupid thing this weekend: I accidentally put about 3/4 gallon of 2-stroke premix into my son's ttr-125 after he ran out of gas. It fired right up, but would not idle too well with the choke off. So before I realized that I used fuel from the wrong can, I gave it a quick tweak of the pilot air screw and the throttle stop screw, and now she idles fine. While I was making these adjustments my buddy commented that the bike sounded like it had some gunk in the carb, and his words made the light bulb in my head go on, and I finally realized that I used fuel from the wrong container! Doh! So I shut off the petcock and let the engine run until the float bowl ran dry. I was about to drain the tank, but then I got to thinking... [B]what's so bad about running 2-stroke premix in a 4-stroke engine?[/B] I suppose the oil leans out the mixture a bit, which explains why I had to mess with pilot air screw a little to get a nice smooth idle. Is there any other problem, for example, will I have to tear down and clean the carb? I'm sure I'm not the first person to make this mistake so somebody out there has got to have words of wisdom and experience to offer. [/QUOTE]
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Dirt Bike Discussions By Brand
Husqvarna MX & Off-Road Dirt Bikes
2-stroke fuel in a 4-stroke motor
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