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how cold is really cold?
when it gets to single digits, I give my snow blower a SMALL shot of hot start
That�s probably the fix but it�s a pain in the arse to get to the air box, removeThe air cleaner put all back:(. The darn thing should start if every is right.
Is the fuel freezing in the jets ?
Sounds as fuel related,, the 4 strokes had in line fuel filters that we would change every winter. Many would be full of ice and water. i would check that and make sure you have fresh gas. also I would check and clean the carb bowl . Pull the plug next time it won't start in the cold and see if it is getting fuel or possibly flooding.
Not that cold. We very seldom get that cold where I live.
It has flooded in the past due to excessive flooding, that’s when the PO told me the starting combination however that would not work today. I’m thinking a hotter plug may fix the issue
I had a riding mower that wouldn't start in colder weather, I drilled a small hole in the air cleaner housing that was just large enough for a straw from a can of starting fluid, and put a piece of duct tape over the hole. On a 20 year old mower that was free, it didn't matter to me that much, as I didn't have enough time to troubleshoot the starting problem. It became my brother's problem a few years later when his mower fell apart.Obviously, the best thing to do is figure out the problem, but a different heat range spark plug won't help in this instance.Ken
once again use a new plug. modern fuels can permeate the nose insulator and be very difficult, some say impossible, to burn off if they have been in a flooded situation. especially if the ignition system is weak. someone suggested projected nose plugs, if there is room, that's a good option. a hotter plug just means the insulator runs at a hotter temp to burn off deposits which could help if the plugs routinely foul from improper mixture