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not starting
- what do i do next?
started by PolarisSS
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October 28th 2008 at 9:33 AM
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PolarisSS
New Member
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66 Posts 
Group: Members
Member Since: September 25th 2008
Location: Camp Lake, WI
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86 polaris, i got from a buddy, i replaced all of the fuel lines, new fuel filter, took off the fuel pump and cleaned it, took off the carb and cleaned it, still wont start. what should i try and do next? im just getting into snowmobiling and am trying to fix this thing myself( with the help of all of you of course  ) so if you have any ideas on what i should try next or what i did wrong, please let me know. thanks.
Rob Worthley
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Site Supporter
Group: Site Supporters
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October 28th 2008 at 9:55 AM
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03Pro-X700
Senior Member
03Pro-X700 wants to get rid of my cdi, tach, wiring harness, and old cover. PM if interested.
Updated Last Sunday at 11:26 PM
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2414 Posts 
Group: Members
Member Since: December 13th 2003
Location: Wisconsin, USA
Current Sled: 2003 Pro-X 700 144"
2008-2009 Miles: 860
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Well it sounds like you went over the fuel system, so check spark next.
2003 pro-x 700;
TracksUSA 144" tip-up rail extensions
1.25 camoplast predator /120 1.40' extreme max SS studs
VanAmburg tunnel extension
SLP Powder-Pro skis, Powder-Coated suspension
Holtzman tempaflow-420 main jets
10-64g weights w/ round almond spring
24/42 gearing, gutted airbox, PERC, torque arm
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October 28th 2008 at 9:56 AM
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polarisorbust
Eat my roost !!!!
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627 Posts 
Group: Members
Member Since: December 21st 2005
Location: Morley, Michigan
Current Sled: 1998 XC 700
2008-2009 Miles: 1178 miles
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make sure your choke cable isn't broke. did you try some gas down the cylinder? what sled is it? do you have spark, depending on the sled it could be a cdi failed. check your throttle if it is too loose it wont start, there are safety switches on the throttle lever. if you check down where the wiring comes out of the engine, there is a black wire all on its own. disconnect that wire and try to start. that is the main kill ground far all of your kill switches, if it starts you will not be able to shut it off though, just have to pull you plug wires. this test will let you know if your kill switches are shorted.
98 XC700 97.3 mph 1000 ft.
00 XC500SP 45th Anniversary Ed.
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October 28th 2008 at 10:21 AM
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FuelieRXL
1991 Indy 400
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189 Posts 
Group: Members
Member Since: June 27th 2008
Location: Massachusetts, USA
Current Sled: 1996 RXL & 1991 Indy 400
2008-2009 Miles: 370 each
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Quote originally posted by PolarisSS
86 polaris, i got from a buddy, i replaced all of the fuel lines, new fuel filter, took off the fuel pump and cleaned it, took off the carb and cleaned it, still wont start. what should i try and do next? im just getting into snowmobiling and am trying to fix this thing myself( with the help of all of you of course ) so if you have any ideas on what i should try next or what i did wrong, please let me know. thanks.
Check the electrical system. Make sure you have a good spark. Check cylinder compression, very important. Put a tablespoon of gas down each cylinder through the spark plug holes and replace the plugs. Now pull it, does it fire?
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October 28th 2008 at 10:23 AM
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PolarisSS
New Member
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66 Posts
Group: Members
Member Since: September 25th 2008
Location: Camp Lake, WI
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the choke cable is gone, not even there, i tried gas down the cylinder, that didnt work either, yes i have spark, i had it running before i did all of the fuel work, then it just stopped, so i thought something was in the carb, but my fuel filter was just really bad, the kill swich works cuz when i did have it runnin i shut it off that way. wtf?
Rob Worthley
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October 28th 2008 at 10:31 AM
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polarisorbust
Eat my roost !!!!
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627 Posts
Group: Members
Member Since: December 21st 2005
Location: Morley, Michigan
Current Sled: 1998 XC 700
2008-2009 Miles: 1178 miles
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did you checnge the pulse line to your fuel pump?
98 XC700 97.3 mph 1000 ft.
00 XC500SP 45th Anniversary Ed.
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October 28th 2008 at 11:00 AM
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700RMK136
Drift Digger
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128 Posts
Group: Members
Member Since: February 9th 2007
Location: Willmar, MN, USA
Current Sled: 2002 RMK 700 136
2008-2009 Miles: 315 :(
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whats is in place of the choke cable? and is there a key hooked up? if you pull the plugs out and pull it over do they spark?
2002 RMK 700
3" Riser
94 XLT 2" paddles
8,000 miles and going strong
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October 28th 2008 at 5:45 PM
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PolarisSS
New Member
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66 Posts
Group: Members
Member Since: September 25th 2008
Location: Camp Lake, WI
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what's the pulse line ? is that the one comming out of the middle of the fuel pump? what does that do? nothing in place of the choke lever? i have the line, just laying there not hooked up to anything. no key. yes the plugs spark. do i somehow have to prime the pump?
Rob Worthley
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October 28th 2008 at 6:16 PM
[ Modified October 28th 2008 at 6:17 PM
]
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BC_Dan
Advanced Member
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1739 Posts 
Group: Members
Member Since: January 31st 2003
Location: USA
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The impulse line goes from the crankcase to the fuel pump. When the piston goes down, it pressurizes the bottom end, which sends a pressure pulse down the hose and that makes the diaphram in the fuel pump move away from the hose. Then when the piston goes up, there is vacuum in the crankcase and impulse line, making the diaphram in the fuel pump go the other way. That back and forth motion (pressure/vacuum) is what causes fuel to move in the fuel pump.
There should be a nipple on the crankcase to attach the impulse line. If the line is not attached, no fuel will be pumped.
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October 28th 2008 at 6:48 PM
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ULTRAMANIAC
Junior Member
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395 Posts
Group: Members
Member Since: October 7th 2005
Location: Delisle, Saskatchewan, Canada
Current Sled: 2009 M8 Sno Pro
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Should have fire if you put gas down the cylinder if you have spark even just a little check the spark make sure its good.
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October 28th 2008 at 6:58 PM
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PolarisSS
New Member
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66 Posts
Group: Members
Member Since: September 25th 2008
Location: Camp Lake, WI
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ok fire in the whole she started and i drove it out of my garage, smokin pretty bad, again im new to this, and i just got this sled from a buddy for free 1986 polaris ss440. ok so i had it running for like 5 minutes, a little noisy, but she has been sitting for a while, normal? then it started bogging and died on me. i noticed oil coming out of the exaust, normal? what would make it die again? why wont she keep running? so far i replaced the plugs fuel pump, all fuel lines, cleaned the carb, and the fuel pump, what should i do next? thanks for all the help so far.
Rob Worthley
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October 29th 2008 at 9:39 AM
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polarisorbust
Eat my roost !!!!
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627 Posts
Group: Members
Member Since: December 21st 2005
Location: Morley, Michigan
Current Sled: 1998 XC 700
2008-2009 Miles: 1178 miles
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does that sled have oil injection? if not make sure you mix the gas with oil
98 XC700 97.3 mph 1000 ft.
00 XC500SP 45th Anniversary Ed.
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