Odd Starting Problem - HCS Snowmobile Forums

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Old 03-10-2020, 11:32 PM   #1 (permalink)
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Join Date: Mar 2007
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Location: Roscoe, IL
Default Odd Starting Problem

Had a weird problem with my wife's 07 F8 recently I wanted to run by you guys to see if anyone has had something similar happen.

We've had it for our 3rd season now and haven't had a lick of trouble with it. This last trip it ran great until the morning we were loading to leave. It's always taken 2 pulls to start when cold first thing in the morning, and then 1 pull the rest of the day. Behaved the same way this trip. The morning I went to load it, on the second pull, it sort of "puffed".....didn't backfire (which it occasionally will do). After that, it didn't even act like it was trying to start. Eventually the rope broke (had a frayed spot and knew I was going to need to replace it this offseason anyway) and we had to yank it onto the trailer.

Fast forward to tonight. I got the rope fixed. For shits and giggles I pulled the 2 plugs out on the muffler side since it was already off and they were easy to get to. Both were pretty gnarly. Good brown color, but pretty crusted over. Threw em back in and went to see if it would start by chance.....2nd pull like normal it fired up. It kinda chugged for about 20 seconds, which it doesn't normally do, but after that it cleared up and sat there running like normal. Shut if off and let it sit for a bit....first pull fired right up.

The plugs for sure need to be changed for next year, but I don't think that's what the issue was the day it wouldn't start.

Any ideas what might have been going on?
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Old 03-11-2020, 08:24 AM   #2 (permalink)
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I think you'll be fine. They just do it. (Every sled....right up to today's models) I've started to say..."it's a thing". Next time if it's not running after 2 pulls, crack the throttle open 1/2" or so, and pull the rope. Recently a member said he had to hold his wide open, but, that I've never seen and it is very uncommon. A compounding reality, is that the rope can be hard for some guys to pull once they are also holding the throttle, so then they loose pulling force which makes the engine not want to fire as quick as well.
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Old 03-11-2020, 04:32 PM   #3 (permalink)
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I agree with Stronger. My 1000 normally starts fine, but if it does do that little bump or puff where it like runs for one second will be a real pain to start after that. Unless, I have found that if that occurs i let it set a minute and then pull with just a bit of throttle pulled and it fires right up. I am not familiar with the entire workings of these FI units but I kind of assumed that the short start kind of floods it and then by cracking the throttle it lets some extra air in. Just my hypothesis.
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