yz426f wont start cold...but heat garage and it starts

Hi hope i can get some input there

as i would to solve this slight problem

2001 yz436f

So i just got the bike from a guy who

had it in his front room for a year

it starts first kick when i heat the garage

but when its cold out below 32f....it does not

just wanna get some stabil thru the carb while

i'm off home back to England for Xmas

what should I address here...

Respectfully and thanks in advance

Stephen

The problem may be ice particles formulating in the fuel that is in the float bowl of the carb. It happens when sitting a bike overnight in a garage with a temp below or at freezing. One way to combat this is putting isopropolyene additive in the fuel. This happens to my snowmobile, overnight in the cold. Good luck.

I'll get some heat additive.....just had the hairdryer on here for 3 mins....started right up

I'll get some heat additive.....just had the hairdryer on here for 3 mins....started right up

Carry the hair dryer with you:smirk:

Carry the hair dryer with you:smirk:

I'm not from California !!!!! :thumbsup:

I'm not from California !!!!! :smirk:

Put an electric blanket under it, wrap it up the sides of the bike, and use a strap to hold it. I've done it to mine before in extremely cold temps, and it usually starts on the second kick.

I'm in Vegas right now on vacation, these people that live out here have no idea what cold weather is. Last night the locals where complaining about 40 degree temps, they where all bundled up and I was walking around in a t-shirt....lol (its in the 20's at home).

Back to the casino....:thumbsup:

I'm in Vegas right now on vacation, these people that live out here have no idea what cold weather is.

Two weeks ago, a local on a Recruit parents board was warning people who live in Wisconsin and Illinois that it might be cold here in San Diego. :thumbsup:

so there is no solution for this apart from heat ?

All about Jetting I have always run the same stock main jet for all 4 seasons, Nope I do go 1 larger for ice racing. pilot jet stay at 42, fuel screw at 1 5/8 turn out, I found the biggest thing for cold weather starting is the START jet stock is 72 but for the winter I install 78, starts way better don't start & stall as much. Also check your valve clearance , as they get tighter the bike will start harder. I also put the jd jetting kit blue needle at 4th clip. another trick I see guys do at the parking lot, hose connected to your exhaust pipe on your car, not to long cause the exhaust will cool , & put next to your cylinder. I also see guys use propane torch on cylinder , but I find that a little unnerving, kinda like thawing your gas cap at the Gas station.

Two weeks ago, a local on a Recruit parents board was warning people who live in Wisconsin and Illinois that it might be cold here in San Diego. :thumbsup:

Hahaha. The local news here in Vegas keeps talking about "possible rain and then foot hills snow". They are making a huge deal out of it. I'm so glad my flight leaves in an hour..... ready to get home!

so there is no solution for this apart from heat ?

Mine will start without heat until you reach about 15-20 degrees. After 15 degree's mine needs a little help.

:thumbsup: Stop riding dirt bikes when its so cold outside!! Thats what I would do.. I used to love the cold but since I joined the military to see the world and they sent me to Florida and Georgia with frequent vacations to the sand box, I kinda can't stand it anymore!

I like most of the suggestions so far but I think that the simplest would be to keep it in the garage the night before the ride if you can.

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