I was riding yesterday down the bumpy trail and had the throttle wide open and then let off and the engine killed. Then when I tried to start it, it had flooded. Coming home both my friends and mine did the same thing. We have the mountain sled and have done the float bowl updates. We are also both running turbos. Has anyone else had this happen? Any thoughts would be appreciated.
Another thought. You are stilling running pretty lean.........
When you let off the throttle quickly your sled goes very lean for a fraction of a second. If you are already lean and then go leaner that could easily kill the motor.
As for the being flooded...... That puzzles me a little, but did it backfire? There are two possible explanations... a backfire would spin the turbo and pressurize thte float bowls. Also if you were going fairly hard when it died the turbo would still be spinning hard and could again pressurize the bowls.
I am betting that you are too lean. The first time I ran mine I had 132.5's. The first bank I tried to go up I hit pretty hard and BOOM the sled dies and backfires. Since I have gone richer I have not had it happen again.
When you let off the throttle quickly your sled goes very lean for a fraction of a second. If you are already lean and then go leaner that could easily kill the motor.
As for the being flooded...... That puzzles me a little, but did it backfire? There are two possible explanations... a backfire would spin the turbo and pressurize thte float bowls. Also if you were going fairly hard when it died the turbo would still be spinning hard and could again pressurize the bowls.
I am betting that you are too lean. The first time I ran mine I had 132.5's. The first bank I tried to go up I hit pretty hard and BOOM the sled dies and backfires. Since I have gone richer I have not had it happen again.
kmer
Expert
Had the backfire condition happen right after hitting a bump, however, it also blew a fuse and killed the engine.... found out the ignition wire was being chafed where it touches the steering column.
I'm not sure that the this is related to your problem... but have you rerouted the igition wire and wrapped protective lomb around it?
I'm not sure that the this is related to your problem... but have you rerouted the igition wire and wrapped protective lomb around it?
powershot1
Extreme
I am also running a Turbo RX1
I was running up in Kinross MI in 15" of powder running across a field
I fell into a 4' hole at 70+mph and that about put me over the bars when I hit the other side.
I didn't crash but the engine stalled and was vary hard to restart.
The engine was flooded and blew a lot of black smoke when i finally got it restarted.
Every time I shut the engine off after a ride, it is very hard to restart. The
engine seems to be flooded.
The engine starts easily when cold every time. Any ideas on the hard restart??
I was running up in Kinross MI in 15" of powder running across a field
I fell into a 4' hole at 70+mph and that about put me over the bars when I hit the other side.
I didn't crash but the engine stalled and was vary hard to restart.
The engine was flooded and blew a lot of black smoke when i finally got it restarted.
Every time I shut the engine off after a ride, it is very hard to restart. The
engine seems to be flooded.
The engine starts easily when cold every time. Any ideas on the hard restart??
Buckeye
Lifetime Member
- Joined
- Apr 13, 2003
- Messages
- 1,430
- Location
- Lakes Region, NH
- Country
- USA
- Snowmobile
- 2018 Sidewinder LE XTX 137" 50th Aniversary
Hard to start
Funny you should say that, because i just got a call from a friend who has the McXpress Turbo and has the same problem. The sled starts fine cold. But heated it won't start and appears to be flooded. I have an McXpress too and have not had a problem starting hot or cold. I was testing yesterday and had to stop several times to cool it down, as I was on glare ice with nothing to cool it. It started everytime though and the water temp was in the mid 150's when I would restart. Which turbo do you have?
Funny you should say that, because i just got a call from a friend who has the McXpress Turbo and has the same problem. The sled starts fine cold. But heated it won't start and appears to be flooded. I have an McXpress too and have not had a problem starting hot or cold. I was testing yesterday and had to stop several times to cool it down, as I was on glare ice with nothing to cool it. It started everytime though and the water temp was in the mid 150's when I would restart. Which turbo do you have?
Similar threads
