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Sled feels like it lost power a little bit..

Tuning

 
 
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  #26  
Old 12-06-2008
westman995
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OK they are snyced better now. Started it up sounds great, put the air screws from 1 turn to 1 and a half, i think i had it on one for the summer but i dono..

Anyways, as always got a new problem.. As i rev it up it makes a sound.. Its like zzzzzttt or something haha.. Any ideas at all what it could be? I have never heard that sound before.
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  #27  
Old 12-06-2008
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Im thinking it could be the clutch? The belt? Or maybe even the reeds? I cant really tell where its coming from.. Any ideas? It runs great, just got that strange sound. I pulled it in the garage, gona pull the carbs and reeds and inspect them. Then the clutch or belt i dont really know..
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  #28  
Old 12-06-2008
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Pulled the carbs and reeds, all looks good there.

I am thinking its possible that its the water pump. Before i put the engine together i would turn the crank and the water pump would make a littl squeeky noise, i put a drop of oil on it and it stopped. But I dono it only does it when its revved up. I pulled it over wihtout the plugs, carbs or reeds so its quiet as i pull it, cant hear anything.
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  #29  
Old 12-06-2008
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Ok update.. Pulled the rave valves off, to my surprise one of the rave valves was NOT screwed in all the way, i mean like the valve part into the plastic piece. Which is quite odd, i put this engine togther myself i dono how i did that. Could that have caused the noise? If so, how come it just now started? After i got the carbs synced so its working properly now? hmm.. And it was the side that that kept fouling that wasnt screwed all the way in. May or may not have been part of the problem, but i kinda dont think it was part of the fouling problem i had.

Here are pics, how bad is it that it wasnt in all the way? And i do screw it all the way down along with the little red thing in the cover right? Thats what i was told or read before...




Could it have just gotten more loose if it wasnt tight enough and started making the noise? Or possible it starting making it after i synced it and it started running better?
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  #30  
Old 12-06-2008
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Im not sure if you can tell or not, but i think you can. The one is quite a bit not as far in.



I also put this same exact post on dootalk too
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  #31  
Old 12-07-2008
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Ok im really running out of ideas now, i took that leaking rave valve apart and put a little bit of threebond on it to seal it up, hope that works. But its still making that strange noise. I have no clue what to do, ive checked the exhaust springs and all stuff like that and nothing. It has to be coming out of the engine...
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  #32  
Old 12-16-2008
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Damn it.. Well i thought the problem was gone, but we just got some snow today, and still snowing. So i took the sled out, and the damn plug fouled. It is the carb for sure now, i switched them and now the other side fouls. Its not a jetting issue. It has to be the float. So i guess ill take them both apart if i have to and measure the floats to match.
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  #33  
Old 12-16-2008
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turn the red piece out of the black caps so its flush with the top of the black cap. the plug fouling might be from that valve not working right?

if you put the black cap on, take the red out with someone to help you they can run the gas and you can use your finger to hold the springs in place, as they rev the engine while the sled is on the warm up stand, the vavles should move up a little bit and down as the engine is reved up and down. if one is moving and not the other than you have to make sure the passage through the cylinder is open, make sure the passage in the ves body is open as well. a can of carb cleaner with the red straw works, with the spark plug removed so you can see in the hole, spray in there, you should see the cleaner blast into the cylinder. find the hole on the ves body, blast into that if the bellow is flipped inside out you should see cleaner come into that area.
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  #34  
Old 12-16-2008
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Ive ruled it down to being a carb problem. Im not 100% sure the valves are working right, but i think they are. They did both move, just it seemed they didnt move at the same time before, but thats cuz one piston goes up and the other comes down, right?

I switched carbs and then the other side fouled.

When i said ive swapped carbs before and it didnt do anything, it must have been the same time i had them apart and must have put the floats in different carbs.
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  #35  
Old 12-17-2008
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well if the problem follows the carb then it must be the carb.
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  #36  
Old 12-18-2008
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Anyone got some jets they wana sell me for cheap and send out real quick? I got money in paypal. I need two 280s and one 270.. Wana get them soon, and no i dont have anywhere around here to buy them.
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  #37  
Old 12-18-2008
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Well i thought i found the problem, it looked like there was a hole in the float, the one from the carb that is not working right. But i soaked it in water and it didnt seem to get anything inside of it, and nothing was in there when i took it out. Could gas get in it more easily than water?
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  #38  
Old 12-19-2008
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Yes, the molecule for gas is much smaller than water.
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  #39  
Old 12-19-2008
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Quote:
Originally Posted by OCR View Post
Yes, the molecule for gas is much smaller than water.
I guess i should try soaking it in a little gas and see if it leaks?

If this doesnt work, ill just swap the floats from the carbs and try that. Im really sick of fouling plugs, cuz after that they are basically junk.
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  #40  
Old 12-19-2008
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Well i didnt try soaking it in gas, this prolly wasnt the best solution and im not gona get my hopes up on it holding up forever. I used bondo, like body filler for cars, to fill in the little crack that i thought looked like it could let gas in it. I rode it a bunch today, runs great, just need new jets. I dono if its going to foul out again or not, i was on the throttle alot of the time or i would turn it off if i stopped at all.

At first it was backfiring a ton and wouldnt run hardly, i put the br8es plug in one side, it ran but still did it, put both br8 plugs in it, fired up and ran great, so i ride it down to fleet and farm and get some new br9eya plugs and throw them in, ride it for prolly 50 or more miles today and its good.

I pulled the plugs just now after getting home, still a little wet and dark, so for sure need to be jetting down.
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  #41  
Old 12-20-2008
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How gay.. So i was out riding today, fly through some drifts, and all of a sudden i hear knocking sound.. Was gona turn back, but tipped my sled on its side thinking it could be a stud hitting the chassis, well it was. As youve seen before the studs rip a big hole in the track when they fall out, I had to rip it off cuz it was just hanging there. I need a new track, i want big lugs but i want studs too for when i hit hard pack and the lakes, but i cant have both..Which sucks haha
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  #42  
Old 12-20-2008
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O ya and i also put premium gas in it, said 92 octane on the pump.. Didnt notice anything different really other than the damn price.
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  #43  
Old 12-20-2008
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Yep they sure did a real good job putting those studs in the WRONG places on this track.. Track would be great still if it werent for big ass square holes ripped in it by half the track windows.

One was hanging off today, Started hearing it hit the tunnel.. Bad knocking sound it was making, thought my engine was fucked for a second haha.. Rode for a bit slowly and kept doing it.. Tipped it on its side and found the stud hanging off and tearing right into my tunnel, the bulkhead cooler was already scraped up, im not sure about the tunnel or not tho, im guessing it already had damage also. I really need a new track, ive gotten used to the studs on the hard pack and the lake, im gona miss them if i end up getting a new track, cuz if i get a new one i want a 1.5" atleast for going through drifts and deep snow, not a long track cuz its still gona be a ditch banger.

Here are some pics of the damage..



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  #44  
Old 12-23-2008
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OK i think i found the real problem of it fouling out possibly, dont think it was floats cuz i swapped floats from carbs after i sealed that thing i suspected to be a hole, well the other plug fouled out, i suspect it to be the carb itself.

There is this little ball looking thing in the carb near the pilot jet, its brass colored, and it looks to not be sealed up, where the other carb looks sealed up good. This one looks like its fell out a little and loose, but it doenst move around, im gona try and seal it and see what happens. hope this fixes it for good now.
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  #45  
Old 12-23-2008
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Does that sound like it could be the problem? It looks like that little thing goes to where the pilot jet screws in. So thats why it only foulds if im not hammering the throttle?
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  #46  
Old 12-23-2008
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Quote:
Originally Posted by westman995 View Post
. I need a new track, i want big lugs but i want studs too for when i hit hard pack and the lakes, but i cant have both..Which sucks haha
Yes you can, hillclimbers been using a type of studding for years. Select a thick. wide area of paddle, clip out a small notch, say 1/4" x 1/4". Take a steel, self-tapping I believe, hexhead screw shorter than your lug height. Run it down into lug in notched area.

Supposed to stiffen paddle in that area and provide a type of stud to grip into hardpack or ice.

NOTE: I've never tried this, not responsible if you fuck up your track or sled.
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  #47  
Old 12-23-2008
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Quote:
Originally Posted by Vertical_Escape View Post
Yes you can, hillclimbers been using a type of studding for years. Select a thick. wide area of paddle, clip out a small notch, say 1/4" x 1/4". Take a steel, self-tapping I believe, hexhead screw shorter than your lug height. Run it down into lug in notched area.

Supposed to stiffen paddle in that area and provide a type of stud to grip into hardpack or ice.

NOTE: I've never tried this, not responsible if you fuck up your track or sled.
Thats crazy, but i dont think id try that, knowing i would fuck it up, and my sled would prolly get messed up, wouldnt be a bad idea to try first on an older track tho.. Dont suppose you know where i can find some pics if something like this?

Its really not safe or recomended to stud a 1.5" track, right?
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  #48  
Old 12-23-2008
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I'll see if I can find some pics for you. I can see sled being damaged if they come out part of the way and hit something or get slung into a cooler.
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  #49  
Old 12-23-2008
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Quote:
Originally Posted by Vertical_Escape View Post
I'll see if I can find some pics for you. I can see sled being damaged if they come out part of the way and hit something or get slung into a cooler.
O ya now taht you mention it, its not really safe on my sled anyways, the studs in it now, if they are hanging loose its gona be doing damage, as it already has. If i go past a 1.25" track i wont be running studs for sure.


See the above pics for the damage i noticed when i heard the bad knocking sound, it was a loose stud hanging off the track.
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  #50  
Old 12-24-2008
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You can buy carbide embedded screws that go right into the lugs.
http://www.mfgsupply.com/SnowKlymaxx...on_id=zMUNRYb4
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