2009 M8 stone cold dead.

[zlay3r]

Today i went out riding, After a while of riding we decided that it was time for a smoke, Shut the engine of, 5min later i started it up an in ran in idle for about 5-10sec. Then it just died. Pulled the plugs checking spark, It was OK, But the plugs seamed a little bit dry. Has this happend to anyone else? My first guess is that its something wrong with the fuel delievery, I pulled out the filters and checked them but both of them seamed fine.

Edit, Should mention that it will not even try to fire.

Thanks, David

 

[crix]

pull the line off just befor the injectors to see if its pumping fuel, and double check to insure the filters were not pulled in

fuel pumps can go bad and ice in the line is a pain in the .... I always run heet

 

[SaberKitty]

Set the park brake, hold the throttle wide open with one hand and pull the rope. Be prepared to let go of the throttle when she fires.

 

[zlay3r]

crix: i shall look into that.

Sabercat: have tried that many times

 

[Colorado Climber]

Sounds Familiar

David,

I have the same sled with the exact problem. What I have found to work is to hit each injector with a 9volt battery.

My starting scenario goes something like this:

Hit one injector with the 9v
Pull the cord a couple of times to build up fuel pressure, make sure kill switch is "on"
Hit the the other injector w/9v
Pull the cord one or two times and it should fire up

Let me know if this works.

CC

 

[mmsports]

Truble shooting

It still will not start?

First thing first disable the kill switches to if it is the throttle safety switch. Take a 10 M torx open throttle and unplug the kill switch and the safety switch.


If that's not it and you want to check if its fuel the easiest and fastest not the safest is to take pipe off dump small amount of fuel down Y pipe if its fuel it will fire.

We relocated my back up beeper on my m8 and did not get it tied down good it fell on my exhaust and melted shorted and killed my sled. So it can be a wire grounded.

Good luck.

 

[Colorado Climber]

Hey mmsports

The weird thing about my problem is when I try and dump gas down the y pipe the sled will only fire and run on one cylinder. But, if I hit the injectors with the battery, keeping everything else connected, it fires right up, but I have to hit both injectors?!?

I'm still looking for the reason why if you have any suggestions? I don't think it's the injectors because once it's running it runs perfectly! The heat temp switch is next to be replaced.

CC

 

[mmsports]

CC

What happens when you unplug the temp sensor?

 

[mmsports]

If it starts

Sounds like a trimming pick up and not injector. So can you get it to move cylinders by move injector plug ins. Hard to do but if you have one that is firing and it will move with injector plug it could be the timing pick up or a week stator. More than likely a week stator.

 

[Colorado Climber]

Nothing changes when the temp sensor is disconnected. The sled acts like it's not getting spark or fuel, which it is because I have checked both pulse at the injector and I have 40 psi on my gage. By the way I have also replaced the stator, ecu, main wiring harness, and voltage regulator, and the sled only has 350 miles on it.

 

[OnTheEdge]

I will put $100 on it that it's you fuel pump. unplug the black and red wire in coming out of the fuel tank. Plug a jumper wire in both positive and negative. First try to run the fuel pump forward by connecting + to + and - to _. If it doesnt spin, hook + to - and - to + and run it backwards for a few seconds. Then run it forward for like 30 seconds and have someone start the sled. Then you should be good to hook it back up.

Try it and see.

 

[Colorado Climber]

Sorry O.P. didn't mean to hijack your thread

OTE
Thanks I will give this a try. I currently have an after market high flow fuel pump on the sled, but, I have never tested it because it shows 40 psi after a couple of pulls, and after you get it started the sled runs like a raped ape!

Once the sled is shut down, be it for one minute or one week, it will not start again without "priming" the injectors.


CC

 

[Colorado Climber]

mmsports

I know we have switched the injectors on the fuel rail and it made no difference, but I don't think we have ever switched the injector plug-ins, all try this.

It seems to fire randomly between the cylinders no matter what we have done to the injectors.

CC

 

[SaberKitty]

... I currently have an after market high flow fuel pump on the sled...

Troubleshooting a heavily modded sled is a little different than "It's new with 350 miles on it."

List up the mods...

 

[Colorado Climber]

SaberKitty

It has a RG turbo on it. When I bypass the control box and run strait stock I get the same start up conditions. Whatever is failing is an Arctic Cat issue.

Remember, once it's started it runs flawlessly.

Any idea's?

CC

 

[zlay3r]

ill have a look at it tomorrow and post some info how it went.
Thanks for lots of suggestions

Best Regards David

 

[skimike]

see smokin is bad for you

 

[Mod800R]

did you check your capasator?