anti freeze for petrol tank on motorbike?

[McMerryn]

Is there such a thing? My husbands bike almost cuts out/loses power when he slows down on the cold mornings when he drives to work, this is dangerous and it concerns me. The bike has been checked over several times with nothing to find wrong........any idea's please. The bike runs fine in summer, this problem only occurs when its cold and still happens when the bike has had chance to warm up.

[Clanad]

If the bike is a four cycle engine (oil is not mixed with the gas) it could have condensation forming in the tank and subsequently re-freezing in the gas lines.  Straight alcohol added to the fuel to the ratio of about 10 to 1 will eliminate the problem.  There are commercially available products for this purpose as well...

Alternately, the bike could be experiencing carburetor icing.  This can occur at reasonably warm temperatures, especially if the humidity is high.  Again, the alcohol deicer could help, but warm air directed from the engine is best cure...

[McMerryn]

thanks Clanad, will pass your suggestion onto my hubby.

[Kev_UK]

I heard about carburetter icing some years ago.. I vaguely remember reading about a guy who was mature and a very experienced rider, and the bike was a Kawasaki.. the model I think was a GPZ1000.
Apparently the carb iced over causing the back wheel to lock up and he had a nasty accident (or was killed).

[Massnegro]

Just to add; It's not really an form of anti-freze but Harley Davidson do a cold weather fuel additive that helps non fuel injected bikes; it's notr cheep and rare as rocking horse pooh in the winter but will help...