M8000 Starting issues and tips?

[-unsound]

Hello everybody. I have a 2016 M8000 with about 200km on it. During my last ride I shut it down for about 20 minutes and when I went to restart it was dead. Checked and it had a strong spark so I doubt it is kill switch or TSS related. It was acting like my 2010 M8 did when it flooded really bad, except in this case the plugs were dry. After pulling it over a bunch we eventually decided to let it sit for an hour and what do you know, it fired right up.

After scanning various forums I have found other people with similar experiences on these sleds. I've made a list of suspected causes and work arounds others have mentioned below.

- Possibly an issue with not getting enough fuel. Apparently with the kill switch off, pull it over about 30 times, turn the switch back on and it should fire up first pull. Alternatively pull the exhaust side panel off pull the bar tube out and blow into it to pressure it up. It makes the sled think it's at low elevation and adds fuel

-Check valves on the fuel pickups in the tank sticking closed, not allowing any fuel in (Doubt that this was my issue)

-Holding throttle wide open and pulling over. (This is mostly helpful for a flooded sled, right? We tried this a few times but no luck)

-When the sled is warm/hot, and you stop for a few minutes, the temp sensor in the airbox heat soaks and programs the mixture for that temp, which leans the sled out too much. Disconnect the temp sensor, apparently it should start right up, then reconnect the plug

-Open the fuel cap to let out the pressure built up from heat. (Not sure the point of this one, but sounds like it works for some people)

What do you guys think of these? I'm curious if anybody here has had similar issues and might have some other tips to help get my sled started up easier if it ever decides to be temperamental again. Last thing I need is a dead sled miles away from the cabin.

Besides for this quirk I really like the way the sled performs, the 3” track makes it feel like I'm cheating compared to my 2010. Just sucks when my friends on their new Doos get to crack all the jokes

Cheers

 

[kiliki]

when you come to a stop let it idle down for about 10-15 seconds before you shut it off.

 

[kidrman]

What killiki said. Cats have been this way forever

 

[carlc]

Its an issue with the coolant sensor. When the sled is shut off, the sensor heat soaks, so when you go to pull it over, the ecu thinks the sled is very hot, and cuts fuel. Cutler sells an interrupter switch that breaks the circuit, making the sled think it is full cold, adding a large amount of startup fuel. Pulling it over with the key off works because it cycles cooler coolant around the sensor, as does letting the sled idle down, exchanging hot coolant with cool from the tunnel.

Sent from my XT1254 using Tapatalk

 

[slyrydr]

what everyone says here is basically right....however, the easiest way to start the sled if this happens is to just disconnect the two wire yellow/blue quick disconnect located just under the speedo unit...this will disconnect the temp sensor, give the engine full fuel (cause it thinks it is now cold)...starts in one or two pulls, then reconnect plug and go ride...use it on those occasions when i stop a little longer than i had planned, usually when bubba sticks his 4-stroker...

 

[leadfoot33]

just let it idle down and when starting just take the slack out of the fun flipper. mine always starts great that way

 

[-unsound]

Thanks for the info guys. This makes sense now. I was having troubles the day i couldn't get it started, the sled was idling way to high due to a misadjusted throttle cable so I was parking it without letting it idle for a few seconds. Now i see that may have caused the hard starting also

Thanks

 

[Chewy22]

just let it idle down and when starting just take the slack out of the fun flipper. mine always starts great that way

x2.....