Intermittent Starting

[Jim216]

I have a 2008 Apex 2008. On my last visit to Rangeley my buddy took it out at night without problem. The next morning I started it to warm up and it started fine. I shut it down and suited up about 30 minutes and the sled wouldn't start. It turned over but would not even sputter. I borrowed another sled for the day and in the afternoon tried the Apex again, it started right up. I took it down on the lake and ran about a dozen speed passes thinking maybe some water in the gas. It ran perfectly. Later that night my buddy was going out and needed to move my sled again it turned over but wouldn't start. The oil level is fine, I don't see anything obvious - maybe vapor lock. Any ideas?

 

[steiner]

Many things to look at.
Starter relay beside the battery.
Fuel pump relay
Fuel pump
Ign switch starting to burn out.
Connector on starter relay corroded
The starter itself could be going out.
The battery could have a bad plate.
Ground block issues
You will need to do some testing of these components to narrow it down

 

[Apex killa]

I have a 2008 Apex 2008. On my last visit to Rangeley my buddy took it out at night without problem. The next morning I started it to warm up and it started fine. I shut it down and suited up about 30 minutes and the sled wouldn't start. It turned over but would not even sputter. I borrowed another sled for the day and in the afternoon tried the Apex again, it started right up. I took it down on the lake and ran about a dozen speed passes thinking maybe some water in the gas. It ran perfectly. Later that night my buddy was going out and needed to move my sled again it turned over but wouldn't start. The oil level is fine, I don't see anything obvious - maybe vapor lock. Any ideas?

Have u replaced the stator recently that happened to my 2006 attak would start run fine then would start on certain circumstances basically whenever it felt like it lol not saying that’s the problem but that’s what happened to mine

 

[maim]

my bet would be frozen relays.

 

[Darren Betker]

If it was cold it will be the feul pump relay. $20 fix with the red relay. Just did mine and solved my problem. The old school relays freeze in the open position.

 

[Jim216]

If it was cold it will be the feul pump relay. $20 fix with the red relay. Just did mine and solved my problem. The old school relays freeze in the open position.

Thanks everyone for your feedback. Battery is good at 12.5 Volts, system is charging at about 14 volts. Back home I can’t getting the problem to repeat I will replace the fuel pump relay, check all connections and try again.


Sent from my iPhone using Tapatalk

 

[Darren Betker]

If you cant replace the feul pump relay with the updated red relay then you will have to live with a cold start problem kuz thats the solution.

 

[kinger]

His wasn't cold though it had already warmed up. I had the same thing happen and got it start with holding the throttle wide open. I had set my idle really low and thought it was that and been fine since raising it back over 1500 rpm. Mine was running all day sat outside while eating dinner for around 2-3 hours, went out to start and it gave a half fire then NOTHING for like 20 mins until I held the throttle open to get it to light, ran on two cylinders for 3-4 seconds then fine. Going on another trip next week I'll see if it comes back.

 

[Winderallday!]

I was told at one time from a Yam mechanic that the old contact style relays were not 100% sealed properly at the base, so frost/condensation could get inside the relay and freeze the contacts.
Likely running the sled getting the relay warmed up melts the frost etc, and then freezes up after it sits in the cold again.
I have never had the problem, but switched to solid state relays for peace of mind.

 

[kinger]

The relay is to trigger the fuel pump, if that is not working then you know that is the problem. Mine and Jim216 seems different. My fuel pump was on with the key. It was odd.

 

[engineman]

3 of the 4 relays on the sled are the same. Try swapping them around and see if that changes anything.