02 Viper Bog Issues

J

Jrewa

New member
Joined
Nov 19, 2009
Messages
8
Age
52
Location
Grand Rapids, MI
I've seen a few other people post similar type of problem however no concrete fix. When I give the sled full throttle very quickly or even half or quarter throttle very quickly the engine starts to bog down, once it starts to bog down if I give it throttle it contiues to act like it's going to stall. If I let off the throttle and let it go to idle speed for a couple of seconds everything is back to normal and I can give it gas again. It doesn't matter what speed I'm going or even at a complete stop, if throttle is given quickly it goes into a stall like I have the choke on. Also, this happens about 10-20 percent of the time. I put sea foam in the gas so this may start to help (have not cleaned out the carbs yet). Could this be carb settings that are off? Any help would be appreciated.
 
check your TORS..make sure your throttle cable isn't super guitar tight that you can play a tune on it.Unplug the TORS and plug the 2 wires into each other.Then try again and see waht happens.If this solves the issue,adjust things properly.
Another thing to look for is a air leak.
 
Opened up the carbs and they appear to be clean as a whistle, floats look like they need to be adjusted slightly but not much. A friend of mine said possibly it would be the floats not letting the bowl maintain enough gas? Not sure if that is ever a problem but it seemed logical. After you guys mentioned the TORS I found in the manual that you can bypass the TORS for troubleshooting so I'll try that next.

Thanks again for the help, really haven't had to work much on the sled since I got it a couple years ago so the help is defintely appreciated.
 
The carbs can look "clean as a whistle", but there will still be blockage in the jets, hope you pulled the jets and checked them. Pay close attention to the pilot jets. Look through them and make sure you can see a nice, round hole through them. It also wouldn't hurt to check the air-fuel mixture screws and make sure they are at 1-7/8 turns out from lightly seated.

The Viper bog issue is usually referring to deep snow riding. The type of problem you're describing is a carb issue or TORS issue 95% of the time...
 
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I rode my first 100 miles on Saturday and noticed a little idle hang when pulling up to intersections, so I decided to pull the carbs and give them a cleaning. (last time was mid season last year). The sled was running perfect except for the slight hang.

Everything looked real good with no restrictions, but I cleaned everything anyway. First time to pull the floats and clean the little screen on the needle and seat assembly, did find a little crap on it. Set the fuel screws to 2 turns to see if it would help the hang, re-assembled everything and fired it up.

Serious bog off idle to WOT. So I tried it a couple of times and decided to pull the carbs again and reset the fuel screws back to 1 7/8 turns. Re-assembled and the bog is still there. Called it a night and researched today.

Looks like the TORS, for real? I know it's an easy test, which I'll try tonight, but is there anything else I should check? What about fuel in the vent lines? I know when I had the rack upside down, the lines filled with fuel. I am going to see if they drained back into the bowls, if not maybe a little air to push it there.

Sorry for the long Hijack, but it is the same issues! I would like to get it straightend out, cleaning the carbs isn't bad, just the after math! Thanks in advance for the advice!

Dave
 
After putting the carbs back on after cleaning the condition still existed. Then bypassed the TORS and it ran fine. Haven't started troubleshooting the TORS however after paying closer attention to when exactly the engine was cutting out is was just when I released the throttle. Appears the issue is within the switch on the thumb throttle. Thanks for the help.
 
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