1994 indy sport 440 bogging - Snowmobile World : Your #1 Snowmobile Forum

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post #1 of 17 (permalink) Old 12-07-2008, 08:27 PM Thread Starter
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1994 indy sport 440 bogging

I just got this sled from my brother. I pulled the carbs ,cleaned them and cleaned the gas tank out. Now it bogs and won't stay running. Any sugestions would be greatly appreciated.
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post #2 of 17 (permalink) Old 12-08-2008, 01:45 AM
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Quote:
Originally Posted by rdstude View Post
I just got this sled from my brother. I pulled the carbs ,cleaned them and cleaned the gas tank out. Now it bogs and won't stay running. Any sugestions would be greatly appreciated.
a few things ,, first how did it run when you got it?? same thing ?? if so I experienced this with my polaris 500 indy trail,, sent it in for new needles and seats for the carbs and fuel pump rebuild,, all said and done only about 200$ but still ran abit off,, one friggin pesky thing that may be your only problem is check the line from your engine block to the fuel pump if it leaks it will run that way,, mine leaked abit after the work changed it and 100% difference,,
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post #3 of 17 (permalink) Old 12-08-2008, 01:49 PM Thread Starter
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Thanks, I will try that line I replaced all of them except that one. Anyone know what the fuel air mixture should be set at?
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post #4 of 17 (permalink) Old 12-10-2008, 03:01 PM
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The air fuel mixture is controlled throughout the range of operation by various needles, jets, and the throttle slide. Assuming they were put back the way they should have been, there are only two things which might otherwise need adjustment: the jet needle clip setting, and the air pilot screw. The jet needle clip (the jet needle is the "toothpick-like" needle sticking down out of the throttle valve slide) should be in the #2 or #3 position as counted from the top. The pilot screw should be turned one to one-and-a-half turns out from fully, but very lightly seated.

Also, make sure your idle screws - the big ones on the side- are turned in far enough to achieve a decent idle RPM.

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post #5 of 17 (permalink) Old 12-14-2008, 03:52 PM Thread Starter
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I pulled the carbs off again, made sure they were good and clean. I changed the vacuum line between the fuel pump and the block. The jet needle clip was in the third position I moved them to the second spot. I also pulled the fuel pump apart and it looked good. All back together now and it still won't run right. It seems like I'm not getting enough fuel?
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post #6 of 17 (permalink) Old 12-15-2008, 10:14 AM
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Does it run at all?

Does it simply fail to engage the drivetrain and pull - is that when it bogs?

Did you check the air pilot screws? (The small ones on the right hand side of the carbs?

Are they the right carbs for that machine with all the correct components?

Are you sure everything was put back in exactly as it should have been?

How much did you remove? Did you remove the pilot jet? Clean it? The needle jet?

If it was running when you started, it is probably an operator error problem. If your brother sold it because "it didn't run right", it could be components.

The more info you can provide, the better.

Formerly known as 63November, and before that as Golsovia.

Riding since 1983.

-Scorpion Whip
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-Yamaha Enticer LTs
-Polaris Trails

Current:
-99 Arctic Cat 550 Panther 14,000+ miles
-08 Ski-Doo 550 Backcountry
-340 eBay Edge from AK, and 10+ other states
-'11 AC T570 brand new...4000 miles
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post #7 of 17 (permalink) Old 12-15-2008, 01:49 PM Thread Starter
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I for got to mention that it runs. My brother sold it to me becouse it was too under powerd for him. I started it when I got home with it but only breifly. I did adjust the pilot air screws. As for the carbs they appear to be stock. It still starts right up and starts to idle then when you give it gas it it bogs. I can keep it running if I feather the throttle.
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post #8 of 17 (permalink) Old 12-15-2008, 11:15 PM
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Flip the choke halfway on when it bogs to see if that helps. If it does then you are looking at a lean bog. Did you set the floats when you had the carbs apart? Maybe you bent the float arms by accident so now they are shutting off the fuel before the bowls have enough gas in them. Floats should be parallel with the carb body when you hold the carbs upside down.

Last edited by retiredpop; 12-16-2008 at 12:52 AM.
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post #9 of 17 (permalink) Old 12-17-2008, 05:33 PM
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When you pulled an cleaned the carbs, how much did you remove and clean? Did you pull and inspect the pilot and needle jets? Both have passageways that are critical to getting fuel and air mixed properly.

Formerly known as 63November, and before that as Golsovia.

Riding since 1983.

-Scorpion Whip
-Ski-Doo Skandic
-Yamaha Enticer LTs
-Polaris Trails

Current:
-99 Arctic Cat 550 Panther 14,000+ miles
-08 Ski-Doo 550 Backcountry
-340 eBay Edge from AK, and 10+ other states
-'11 AC T570 brand new...4000 miles
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post #10 of 17 (permalink) Old 12-19-2008, 03:29 PM Thread Starter
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I didn't pull any thing out of them. I just pulled them apart and sprayed carb cleaner through them.

Iam gonna pull them back off today and see if I can get this figured out.

I should add that chokeing it dosn't seem to make a difference how it runs.

Thanks for all the sugestions, this is an ausome site!
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