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1996 Polaris 600HO Problem

Tech Info

 
 
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  #1  
Old 10-14-2012
96PolarisSpecial
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Default 1996 Polaris 600HO Problem

Hello All,

Just picked up a 1996 Indy Special XLT 600. Now I have owned triples in the past but have never run into this problem.

The sled starts fine, in a couple of pulls, and idles great at 1800 rpm. Now when I went to move it it would do great up until 4000 rpm (when the clutch should engage). At that point it would bog down if I held the gas and return to idle when I let off. Out of curiosity I took starting fluid and sprayed into the airbox when it started to bog(4000rpm), and with a little hesitation it took right off, and as long as I kept it moving it would run fine.

It still does this right now, and without diggin into it (lack of time) I haven't been able to quite think of the possible issue. I am in the belief right now that it is just a new gas problem. The new gasoline that is being offered at the pumps with the ethanol in it I thought might be the cause.

Any ideas?

Thanks,
Dustin
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  #2  
Old 10-14-2012
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Have you cleaned the carbs on that yet?
Sounds just like a plugged jet.
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  #3  
Old 10-14-2012
96PolarisSpecial
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Hey,

I haven't had a chance to tear it apart, I'm going to look at it Wed. I stopped at Pepboys today on my way to work and picked up some seafoam and marine stabil.

Hopefully I wont have to tear into it.
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  #4  
Old 10-14-2012
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Ah...clean the carbs before you do something silly like putting stabil and seafoam in it. That shit will not make a "new gas" problem go away. It sounds more like you have an "old gas" problem, and should start by cleaning your carbs.

Don't be afraid.
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  #5  
Old 10-15-2012
96PolarisSpecial
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Hey,

The marine stabil is for after, as a treatment for the Ethanol. Just to keep things clean. I am going to tear into it on Wed, we will see. Any know of anywhere where I can get an upgraded clutch spring, I did it to my 96 ultra and it did wonders.
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  #6  
Old 10-15-2012
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It still only slows the aging of gas, not reverses it. and seafoam is an awesome cleaner! But cleaning that way take time. Can you afford the repairs if time is not on your side?
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  #7  
Old 10-17-2012
96PolarisSpecial
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Default Same old same old

Alright boys,

I have cleaned the carbs, they werent to bad. It still has the same problem.

Kinda bummed..

Is there anything else?

I noticed that after I cleaned the carbs, I didnt have to spray ether into it to get it moving, but it ran pretty boggy and rough and i was able to get it moving. While it was moving it was boggy but it felt like it wanted to go.. not sure what the problem is now!!

Any Ideas?!

Thanks, Dustin
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  #8  
Old 10-17-2012
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Clutches look okay? Are they clean? Belt the right size/clearance? Are the springs broken?

Did you try switching jets/needles to see if that made a difference? Can you tell if it's a lean bog or a rich bog?
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Old 10-18-2012
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I would pull the exhaust and carbs off and peek in at your pistons. Almost sounds like it could be a broken piston skirt?
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  #10  
Old 10-18-2012
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Look at the plugs, is one wet?
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  #11  
Old 10-18-2012
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Hello all,

I took another look at it today. I went and started it, fired up first pull. I noticed something. When I first start it it is peppy, isnt bogging down and such. but as soon at I let it go down to idle and try to bring it back up it bigs down again. I found when I hear it start to bog I move the choke to half choke, It is a little boggy but I am able to get it moving. As soon as I am moving I turn off the choke and it runs like a dream! I know it has to be something with tose darn carbs, but I am not sure.
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Old 10-18-2012
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That sounds like something is wrong with the pilot jet...

Both spark plugs look the same? Have you taken a flashlight and looked at the tops of the pistons through the spark plug hole?
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  #13  
Old 10-19-2012
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^^^^^^^^^^
Exactly. classic symptom of a clogged pilot jet.
When you clean them again, pay particular attention to those.
The pilot jet is up in the tube and unless you remove them when cleaning they will likely not be clear.
Use a piece of fine wire to floss them out.
A strand of telephone wire is the perfect size for this.
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  #14  
Old 10-19-2012
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Quote:
Originally Posted by OCR View Post
^^^^^^^^^^
Exactly. classic symptom of a clogged pilot jet.
When you clean them again, pay particular attention to those.
The pilot jet is up in the tube and unless you remove them when cleaning they will likely not be clear.
Use a piece of fine wire to floss them out.
A strand of telephone wire is the perfect size for this.
Exactly.
Bog is lean and plugged pilot will cause lean on the bottom end every time
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