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Need help
started by MN-SPX
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November 2nd 2009 at 6:30 PM
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MN-SPX
Starting Member
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11 Posts
Group: Members
Member Since: November 2nd 2009
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Hey all,
I have a 97 Ultra SPX, at the end of last year it started acting up. It would idle fine and run great for about a mile, then it would start bogging down and die. I put it away without finding the problem. I took it out this year and it fired right up. I let it idle for a bit then shut it down. Now it won't start. I pull the plugs and they're soaked. I am getting spark at all three plugs. I pulled the plugs and cleared out as much gas from the cylinders as I could, then tried again to no avail. Any ides???
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Site Supporter
Group: Site Supporters
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November 2nd 2009 at 8:06 PM
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dragon600mod
New Member
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52 Posts 
Group: Members
Member Since: September 27th 2009
Location: waterloo, wi
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you could have a bad stator, your getting spark, but that spark could weaken under compression. i would also check all your fuel lines, make sure there are no cracks in them.
2006 fusion dragon
slp pipe
slp air box
v force three reeds
heavy hitter clutch kit
woodys gold digger studs
egt gauges
3 inch powermadd riser
sportech pad
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November 2nd 2009 at 11:54 PM
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XLT96rider
Other sports play once a week, but this sport is with us every day.
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942 Posts 
Group: Members
Member Since: January 7th 2009
Location: Wausau, Wisconsin, USA
Current Sled: 1996 Polaris XLT Special
2008-2009 Miles: 1000+
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Quote originally posted by MN-SPX
Hey all,
I have a 97 Ultra SPX, at the end of last year it started acting up. It would idle fine and run great for about a mile, then it would start bogging down and die. I put it away without finding the problem. I took it out this year and it fired right up. I let it idle for a bit then shut it down. Now it won't start. I pull the plugs and they're soaked. I am getting spark at all three plugs. I pulled the plugs and cleared out as much gas from the cylinders as I could, then tried again to no avail. Any ides???
Sounds to me like a fuel problem.
When it idled, was it idling fine?
Would it rev up good?
When it started acting up, could you rev it up and clear it out?
Guess I'm trying to get a little more info.
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November 3rd 2009 at 5:04 AM
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remove airbox and check for restrictions.....clean carbs or take it(them) to someone that knows how. Put in new plugs when trying again. You may have some sticking needle and seats, but usually if they start they will run ok until you shut it down. Then it will start real hard.
Also how old is the fuel and could it be contaminated? Sounds like your getting fuel of some sort but running out of air,compression, or spark.
did you just pull it over to clear out the fuel? under the exhaust y pipe you will see 3 plugs (one for each cyl.)at the bottom of the crankcase. pull each and see if fuel pours out. If you get much you may be washing your compression do to too much fuel.
Is gonna be a process of elimination. Start with the obvious and work to the not so.
I've never had a ten But I've had 5 two's
GARAGE FULL OF WEDGIES
1998 XC 700
1998 XC 600
1998 XCF 440
1997 SKS 700
2003 Pro X oops thats an "edgie"
1976 tx 340
1972 colt 340
1974 John Deere 400
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November 3rd 2009 at 6:06 AM
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polaris1man
Average Member
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738 Posts
Group: Members
Member Since: December 22nd 2007
Location: Nashwauk, Minnesota, USA
Current Sled: Polaris SKS700
2008-2009 Miles: not many
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Needle and seats, like DODGER indicated above. Brass seats and Steel needles, something has to wear out
Three-1999 Polaris SKS700's
2000 Polaris SKS700
2000 Polaris Ranger 6x6
2007 Polaris Sportsman 800 EFI X2
2000 Yamaha YZ 250
1996 Yamaha WR250
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November 3rd 2009 at 2:12 PM
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old_school
Junior Member
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145 Posts 
Group: Members
Member Since: December 25th 2008
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I had the problem that you said you had the end of last year, and it was clogged pilot jets causing it. Clogged pilot jets is a fairly common problem because they are so small. I might be at least part of your problem.
I would clean the carbs, replace the needles and seats (fairly inexpensive), and then go from there.
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November 5th 2009 at 5:36 PM
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MN-SPX
Starting Member
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11 Posts
Group: Members
Member Since: November 2nd 2009
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Thanks for all the input.
It started acting up out of no where, was on a trail ride, prolly 20 miles or so in, then it started bogging. I was able to rev it up and get it going at first, but then it just stayed boggy, and eventually just died. The thing that really confuses me is that it started right up the other day, and now, nothing. I pulled the exhaust pipes today, and they were full of gas, also had to pull the plugs cause the cylinders were full of gas & it wouldn't pull over. After that I tried starting it again, to no avail. Plugs, again, were soaked. Seems like this thing is just completely flooding itself out. Any way this could be reeds?? any other ideas? Carbs are a pain in the @ to get to, plus I don't know a whole lot about carbs. I have rebuilt carbs before, just worried about making sure they're in sync if I start messing with em. Thinking about replacing the coils to see if that helps.
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November 6th 2009 at 7:09 AM
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polaris1man
Average Member
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738 Posts
Group: Members
Member Since: December 22nd 2007
Location: Nashwauk, Minnesota, USA
Current Sled: Polaris SKS700
2008-2009 Miles: not many
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Quote originally posted by MN-SPX
Thanks for all the input.
It started acting up out of no where, was on a trail ride, prolly 20 miles or so in, then it started bogging. I was able to rev it up and get it going at first, but then it just stayed boggy, and eventually just died. The thing that really confuses me is that it started right up the other day, and now, nothing. I pulled the exhaust pipes today, and they were full of gas, also had to pull the plugs cause the cylinders were full of gas & it wouldn't pull over. After that I tried starting it again, to no avail. Plugs, again, were soaked. Seems like this thing is just completely flooding itself out. Any way this could be reeds?? any other ideas? Carbs are a pain in the @ to get to, plus I don't know a whole lot about carbs. I have rebuilt carbs before, just worried about making sure they're in sync if I start messing with em. Thinking about replacing the coils to see if that helps.
Have to rebuild those carbs buddy, pay attention to the choke plunger, pilot and main jets, seats for wear. Not a huge deal rebuilding carbs, plus you will need to remove crankcase bolts to let Gas out
Three-1999 Polaris SKS700's
2000 Polaris SKS700
2000 Polaris Ranger 6x6
2007 Polaris Sportsman 800 EFI X2
2000 Yamaha YZ 250
1996 Yamaha WR250
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November 6th 2009 at 8:17 AM
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Coils are the wrong way to go.....turn the gas shut/off off. Pull the plugs in the crankcase as I described above...get that fuel out of your crankcase...Get the carbs rebuilt for Gods sake. Remove the airbox and it is easy to get to the carbs. I would replace all needles and seats unless you want to tear it down again.
Why would you want to mess with coils when you say it has good spark
I've never had a ten But I've had 5 two's
GARAGE FULL OF WEDGIES
1998 XC 700
1998 XC 600
1998 XCF 440
1997 SKS 700
2003 Pro X oops thats an "edgie"
1976 tx 340
1972 colt 340
1974 John Deere 400
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November 6th 2009 at 9:33 AM
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Polaris_Parts_MN
Junior Member
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200 Posts
Group: Members
Member Since: October 8th 2008
Location: NW minneapolis suburbs, Minnesota, USA
Current Sled: 1999 XC 500
2008-2009 Miles: 450
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Quote originally posted by old_school
I had the problem that you said you had the end of last year, and it was clogged pilot jets causing it. Clogged pilot jets is a fairly common problem because they are so small. I might be at least part of your problem.
I would clean the carbs, replace the needles and seats (fairly inexpensive), and then go from there.
very true. main jets are rarely clogged because they are so big. many people dont know where the pilots are because they way down inside that tube.
pilot jets are responsible for idling and the first 1/3 of throttle. if pilots are clogged, sled wont want to even start because it cant idle.
1999 Polaris XC 500
-holeshot skid plate
-fox reservoir front track shock
-fox front shocks
-xenon low-beam bulb (very helpful at night)
Just add gas and snow!
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November 6th 2009 at 9:58 AM
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motor-king
Starting Member
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44 Posts
Group: Members
Member Since: December 30th 2008
Location: Ashland, WI, USA
Current Sled: 99 XCR 440, Indy 500
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100% positive it's your carbs... You're floats are sticking, that's why your pipe is full of gas. Clean the carbs out, you'll be happy you did!!
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November 7th 2009 at 2:00 PM
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MN-SPX
Starting Member
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11 Posts
Group: Members
Member Since: November 2nd 2009
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Thanks alot for the help everyone. I'm in the process of tearing down carbs. I drained the gas from the crankcase under two of the cylinders, but can't get to the third plug yet(it's behind the water pump) there was a ton of gas in there. Gonna replace needles & seats. Only odd thing i found was the middle carb had a 390 jet, the other two had 380's. These should all be jetted the same, right? I'm also gonna replace the fuel pump since it's easy to get at now & they're cheap. I'm also gonna clean up & re-paint the rust covered pipes.
Again, Thanks for the help.
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November 7th 2009 at 4:24 PM
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Big-Guy_Small-Sled
The Starter of Fire
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176 Posts
Group: Members
Member Since: January 24th 2009
Location: Honeoye, New York, USA
Current Sled: 1997 Indy Ultra SPX
2008-2009 Miles: 700
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Pictures would be cool, as I just started sanding my pipes down. I haven't painted them yet. But like to see other ultra's.
"Brendan"
Current Sled/s:
1999 Polaris Indy XLT Special/We name it fire hound!
1997 Polaris Indy Ultra Spx
1991 Polaris Indy 400
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November 7th 2009 at 6:45 PM
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MN-SPX
Starting Member
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11 Posts
Group: Members
Member Since: November 2nd 2009
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I'll post pics once I'm done.
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November 8th 2009 at 4:28 AM
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Quote originally posted by MN-SPX
Thanks alot for the help everyone. I'm in the process of tearing down carbs. I drained the gas from the crankcase under two of the cylinders, but can't get to the third plug yet(it's behind the water pump) there was a ton of gas in there. Gonna replace needles & seats. Only odd thing i found was the middle carb had a 390 jet, the other two had 380's. These should all be jetted the same, right? I'm also gonna replace the fuel pump since it's easy to get at now & they're cheap. I'm also gonna clean up & re-paint the rust covered pipes.
Again, Thanks for the help.
now your heading the right direction.
the jets may be different for many reasons. Buy a 380 install it and the first couple of rides check the plugs a few times each ride. Compare the middle to the others....
I've never had a ten But I've had 5 two's
GARAGE FULL OF WEDGIES
1998 XC 700
1998 XC 600
1998 XCF 440
1997 SKS 700
2003 Pro X oops thats an "edgie"
1976 tx 340
1972 colt 340
1974 John Deere 400
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