SXRPILOT
Extreme
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- Oct 1, 2005
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- Mount Albert, Ontario
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- Snowmobile
- 2018 50th Anniversary Sidewinder LTX
Working on an 06 Vector for a friend. It turns over, there's fresh fuel, and lots of spark (almost too much). Compression is good (no valves open) . When it catches a bit it sounds awful. Thinking it may be a short, or ground, or ecu or crank sensor. Any other suggestions or things to look at would be appreciated. Been at it for a while and getting nowhere. It's got 18000 miles on it.
grizztracks
Tech Advisor
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- FX Nytro RTX, RS Vector, SR Viper RTX SE
Did it quit while riding or has it been sitting and now you're trying to start it for the first time after an extended period not being ran.
SXRPILOT
Extreme
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- Oct 1, 2005
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- 63
- Location
- Mount Albert, Ontario
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- Canada
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- 2018 50th Anniversary Sidewinder LTX
He's been riding it this season, parked it one night and it wouldn't start the next morning
4strokeluvr111
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- Bought a new 05 Vector which I still have
24K miles
Are the plugs wet? (Is it.getting.fuel?)
grizztracks
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You might want to check the cam/ crank timing which involves removing the valve cover to accces the timing marks on the cams. These engines had a possibity of a cam chain tensioner failure which allows them to jump time. Have to tried using a spray bottle with gas in it to mist fuel into the carb openings. It could be a fuel pump issue (check vacuum lines). If you have spark then the ECU and ignition timing pickup coil on the stator is working (There is no external crank sensor like on FI engines)
New spark plugs are always a good starting point.
New spark plugs are always a good starting point.
SXRPILOT
Extreme
- Joined
- Oct 1, 2005
- Messages
- 63
- Location
- Mount Albert, Ontario
- Country
- Canada
- Snowmobile
- 2018 50th Anniversary Sidewinder LTX
Tried fuel in carbs and had them cleaned, vacuum lines are good, will have to check that timing, I'll let you know, thanks
4strokeluvr111
Please stay between the markers!
- Joined
- Aug 27, 2011
- Messages
- 2,154
- Location
- NW Wisc.
- Country
- USA
- Snowmobile
- Bought a new 05 Vector which I still have
24K miles
You might want to check the cam/ crank timing which involves removing the valve cover to accces the timing marks on the cams. These engines had a possibity of a cam chain tensioner failure which allows them to jump time. Have to tried using a spray bottle with gas in it to mist fuel into the carb openings. It could be a fuel pump issue (check vacuum lines). If you have spark then the ECU and ignition timing pickup coil on the stator is working (There is no external crank sensor like on FI engines)
New spark plugs are always a good starting point.
I was going to suggest cam chain tensioner (CCT) but the OP said the sled was shut down OK at night then wouldn't start the next morning. Fluke'ish failure of CCT maybe?
grizztracks
Tech Advisor
- Joined
- Feb 24, 2005
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- 3,110
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- 59
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- Scio, NY
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- USA
- Snowmobile
- FX Nytro RTX, RS Vector, SR Viper RTX SE
Cold starts are hard on engines and an opportune time for a timing failure. I'm not sure if this is what happened but it sounds like something failed during the cold start process. I've also seen the Woodruff key on the crank shear on a Vector causing an ignition timing issue but that was after a hard kickback during a start attempt. I wouldn't hesitate trying a new set of plugs before digging to deep.
4strokeluvr111
Please stay between the markers!
- Joined
- Aug 27, 2011
- Messages
- 2,154
- Location
- NW Wisc.
- Country
- USA
- Snowmobile
- Bought a new 05 Vector which I still have
24K miles
Cold starts are hard on engines and an opportune time for a timing failure. I'm not sure if this is what happened but it sounds like something failed during the cold start process. I've also seen the Woodruff key on the crank shear on a Vector causing an ignition timing issue but that was after a hard kickback during a start attempt. I wouldn't hesitate trying a new set of plugs before digging to deep.
Makes sense. Thanks for the education Sir!
TrueBlue
Lifetime Member
Working on an 06 Vector for a friend. It turns over, there's fresh fuel, and lots of spark (almost too much). Compression is good (no valves open) . When it catches a bit it sounds awful. Thinking it may be a short, or ground, or ecu or crank sensor. Any other suggestions or things to look at would be appreciated. Been at it for a while and getting nowhere. It's got 18000 miles on it.
Had the same problem with my 06 Vector. Installed the new solid state fuel pump relay & that was the problem.
schroon
Pro
The relay is for injected engines, there wouldn't be a relay on the carbed Vector's
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