Snowmobile carburetor symptoms and tuning. Sled carbs.

[@mykolastess2107]

Looks like we’re going to digit 8.0 soon lol

[@stackzoverheaddoors454]

I just bought my first sled a 98 cougar with 2800 miles on it and been sitting for 5 years and your videos lately have been very helpful

[@DIGIT9]

Thx for tuning in ! Glad we can help

[@Ham_Strokers_Ejacula]

I've loved 2 strokes my whole life. Been building and tinkering for years but the carburetor was always like a foreign language. I picked up an off road go kart and put the motor off an indy sport 440 on it and thanks to your video I'm able to properly tune the carbs and haul ass. Thanks for breaking down where and how to tune the carb all the way around and not just the fuel/air mixture lol

[@snowmobile333]

Thank you so much, I am currently working on tuning my 97 polaris indy 500 carb and this was helpful

[@Kwobler]

Purchased a 600rs trail converted but now i understand why it runs the way it does. And many things i can look at and try now.

[@John-fz8uo]

Working on my first sled. 1985 Polaris Indy Trail 440. I know nothing about motors, so I watched a vid. When I took my carbs apart yesterday, they were caked in hard white stuff. I couldn't even get it all off. I pulled an impressive amount of grass and acorns out of the air box also 😄 still can't get it to start without pouring pre-mix into the spark plug holes. I'm counting on you - subscribing now

[@DIGIT9]

Diaphragms in your fuel pump are probably sticking , dried out ? Get someone to plug the suction side of carbs when you try to start it ! Did you clean pilot jets ?

[@John-fz8uo]

I'm going to take it apart and do it again because I'm not happy with how I cleaned any of it and I'll do what you recommended. The white stuff in the carbs was/is absolutely baked on and lumpy and I shouldn't have even put it back together. Is a wire brush best to use? Can I let it soak in something?

[@DIGIT9]

Tooth brush and WD 40 works good to get the white shit off , can use a brass wire brush too ! Then brakecleaner to get the rest off ! Still need to pull pilot jet and clean good or replace with new !!

[@John-fz8uo]

@@DIGIT9 Bought a new fuel pump, the WD40 with the brass brush is best so far. I cleaned the nozzle in each carb, I didn't know it was even there last time - they were that dirty. Just need to clean pilot jet. I noticed that the C clip on both my brass pins were set on the top, so I moved them to the middle. That's all I've done so far today. I would like to empty and clean the gas tank also...then see if she starts?

[@John-fz8uo]

@@DIGIT9 Well, I had the '85 out for a ride in the yard today, Sir! I'm not 100percent done - it stalls out if I don't keep giving it gas. But, it starts again on the first 2 pulls without me having to dump some fuel into the spark plug holes like I used to. I should focus on the screws on the carbs now?

[@canadaeast8358]

What a sound your sled got she’s a beast. Good video man

[@dysfunctionalee3395]

Hey my friend great video my problem is with my 1992 arctic cat wildcat, it has the black magic pipes, it runs amazing in -20 but the minute the weather warms up and it’s only -3 snowmobile is Boggie and doesn’t have enough power to take off. Do I have to take the carburetter apart to put a different jet in or do I just adjust the setscrew

[@darcy32171]

I`m messing with an oldie:1980 El Tigre 6000. Put all new gaskets/seal/pistons/rings in it. Had it running last fall then wouldnt start over winter. I just recently pulled the carbs and soaked them. Everything is spotless, all new fuel lines, filter. Dual Mikuni fuel pump is clean. It only runs on one cylinder. I pulled the float bowl drain on the suspected cylinder and it was bone dry. Where should I start to look? I`m at my wits end with this machine. Thanks.

[@DIGIT9]

Needle and seat might be stuck ?

[@tom-ehill2713]

Just had this 86 Yammi 540 Xlv carb super soaked! Sat up three years. Right ski froze tight. Fixed! Still runs hesitant off no choke! Have to gun it actually! New parts wont work. Jet seat is metal. Newer sleds are neoprene now😢

[@gage_g_0250]

This was so helpful, its been a bit since I've done some work on a snowmobile, let alone owned and rode one. Got myself a 1997 Ultra, didn't hold idle but I got it running and fairly close to being back together. Idles at about 3500 and slowly dies down to a little under 3000, so I think I just gotta turn the air fuel screw out a half turn. Seems to be running lean.

[@danielschabilion9435]

Should idle

[@triplehelper6944]

New pickup filter and line. Hose from pump to block is clear and I can blow air through it. Thanks for the ideas.

[@DIGIT9]

Check the needle and seat in carb , might be stuck shut , not allowing fuel into float bowl ?

[@chadstenback1221]

Sure miss the days of the triples, such a distinct sound:)

[@carsontitford2659]

The good ole days of ultras, storms, Mach z, t cats and zrt’s 👌🏽👌🏽

[@matthewenerson2095]

Been building Rmks since 96 before Polaris even made a Rmk. First was the 96 Ultra with a 1 1/2 136😅. Great content! Wish you guys were in the states would love to have a beer eh!!

[@DIGIT9]

Did you say beer!!!!!! We're in.

[@carsontitford2659]

Was that with the bolt on plastic paddles?

[@DEVUNK88]

what is that slender tube next to the pilot jet? It slides into a hole in the bowl? what is its purpose?

[@mountaincat2001]

Miss seeing you r videos. Can you make a video on carb fuel pump testing please

[@DIGIT9]

We will add it to the list ! Thx for the recommendation !

[@monotheis6889]

I'd really like to get a closer look at that stand she was up on, so I could build one myself for my dad.

[@DIGIT9]

Now adays , almost cheaper to buy one ? Princess Auto, Amazon ?

[@nicholasbrehm7838]

I am perplexed by my Sled. Carbs are new and look perfect, float set correctly, float needle cleaned and checked. Doesn't leak when parked or pulled with kill switch on. Two things I did. I used a smaller fuel line from tank to fuel pump (used 1/4" vs 3/8" stock). Also up'd vaccum line size from case to fuel pump. Do you think that would be enough to increase pressure to the carb when running to force fuel past the float needle?

[@DIGIT9]

No ! Not sure what your problem is , not enough info ! Whats it doing or not doing ?

[@Brownie79]

Ok I got one for ya. I was given a 96 Polaris XLT RMK. It sat for long time I pulled carbs ultrasonic cleaned em. Ran awesome. So I found some pipes for it Pro 5 pipes no silencer so I just straight piped it. I put 190 jets in it and 480Q0 needle jets. Deleted oil injecton Mix my own oil 40:1 gutted air box. Low altitude 4k runs like a bat out of hell. Higher like 6500-8000k at 20F idels great, boggey low rpm have to choke it to get past it then it screams. Dropped needle clip one still same.It has ACCS. Ideas??

[@DIGIT9]

smaller pilot jet , more air screw

[@markjordan9357]

How do you clean the main jets on the carb you pictured. My 1992 wildcat 700 is running not very smooth this year.

[@DIGIT9]

We have vids that explain the procedure !

[@JJJ12W]

Question I just rebuilt my carb ( Mikuni VM 34-229) for my Ski Doo Citation 4500 (377 Motor), everything has been replace except the floats and throttle slide. It has new fuel pump, new fuel lines, new intake gaskets, motor has 120 psi both cylinders. new Spark Plugs and wires, good spark. I have not changed the coils or done anything with the points. I had it running after for 10 minutes after lots of tinkering with both the idle and air screw. Then I took it for a 5 minute drive worked great shut it off and loaded it up in the truck unload it in m y garage and now it won't start again. I set everything back to factory settings as per the Citation Manual and I still I can not get to stay run. It will start runs for 10 seconds or less then dies, if you cover the air intake with your hand you can get to run a little longer but as soon as you remove your hand and open the up the throttle it dies. Not sure why it won't staying running, Is it starving for fuel or air? Not sure what I should adjust as everything I have read says put the air screw to the manual setting and leave it alone. Any help or ideas would be great.

[@DIGIT9]

Sounds like fuel problem ! Did you check the pickup screen in the fuel tank ?

[@walterw4770]

Very impressed by the video. I'm tempted to do a carb cleaning myself. I have taken my 1994 indy 500 in now a few times, and the 1 carb keeps flooding. He told me the last time that he replaced the needles. Any suggestions what I should try next?

[@danraby4344]

Sounds like you need a float adjustment

[@DIGIT9]

something may be wrong with needle and seat !

[@cjnedeau3338]

@@danraby4344 Polaris don’t have float height adjustment

[@stevebean3512]

77 jag 2000, runs good but seems a bit boggy off the start . Not sure if its tunning rich or something else

[@DIGIT9]

Try clutching !

[@gerardjones7881]

the pilot jet you held at the 30 second mark, is it supposed to be clear from end to end too.? Seems a silly question but I'm doing a new to me mikumi carb on an old abused skidoo and theres no light coming through, wire will not pass end to end. I believe that pilot jet is also known as an emulsion tube, the fine holes atomise the air fuel mix. Also, theres 2 adjustable jets on the outside, small one is idle mix ?, it was 1 1/2 turns out. But theres a larger one and it was 3 1/2 turns out, that seems a lot. This is my first sled, I got a real klunker but it was very cheap, guy said it used to run good but now will not stay running. Bowl had grit and little bits of crap and varnish. I run it through a hot ultrasound bath, sprayed with carb cleaner, ran wire through every orifice and blew it out with air. Its ready to go back in, just curious about that adjustable jet, it has knurling so its obviously meant to be adjusted without tools.

[@DIGIT9]

Pilot jet yes but if its the one from the float bowl , no !

[@skostro100]

Lost my air box. Can I put a air cleaner on her. Would it work or will I need some major adjustments? Been running with nothing on carb. So far no problems, but I know it won’t continue.

[@DIGIT9]

They make snow filters for that ! Reg air cleaner will make it run fat and boggy !

[@Nte-wn3sp]

I dont know if you will awnser since the videos been up for a year but my 1998 skidoo formula 500 will idle fine and go fine but when im going up hill,in deep ish snow, or have someone on with me it will bog down and not want to move but if when i let it idle for about 20 seconds she will have her power again until i do one of the things again

[@DIGIT9]

Clutchs need to be cleaned and new springs put in primary and secondary, new belt is a good idea too !

[@Nte-wn3sp]

@@DIGIT9 ok thanks

[@triplehelper6944]

Got a 89 Polaris sport 340. It won’t start unless I use wd-40 in carb. New pickup line and new fuel pump. Clean carbs. Runs great once is starts with help. What’s the top 3 things u would check

[@DIGIT9]

First , check the pickup/filter in the fuel tank , then check hose from engine block to fuel pump , make sure all hose connections are tight !

[@DIGIT9]

If it idles and runs after you use WD-40 to get it going then you have a pilot jet , air screw issue ?

[@DIGIT9]

Also check needle and seat , might be stuck ? Choke may need to be adjusted too ? When sled is running , pull choke lever half way , if sled starts to idle down , then choke is good !

[@Smackvttv]

Digit 8 channel coming soon

[@DIGIT9]

LOLOLOLOLOLOL......it was very close to Digit8! That's funny man.

[@R3D_R41D3R]

Thanks man another vid with good info exactly what I needed to know to fix some bottom end bog

[@brandonburge9981]

I have a 1998 arctic cat zr 500 and it idles fine but bogs and sputters at around 4000 rpm, the sled is set up to be a drag sled and the clutch don’t engage tell 5000 rpm, I have a fully rebuilt motor and have tryed almost everything I can, any advice would be greatly appreciated, love your videos, that’s a sick sled you got

[@DIGIT9]

Sounds like a lean spot ! Try raising the needle , dropping c-clip !

[@brandonburge9981]

@@DIGIT9 thank you for the advice, I’ll try giving her more fuel, really appreciate the reply! Have a great day man

[@pablosixtyseven5028]

hi rick, are you going for digit 8? or 7 ?

[@DIGIT9]

I'll stay at 9 , thx !

[@terryroberts2357]

i have a 98 artic cat 340 that won`t start unless i prime it by taking plugs out and giving it a shot of mixed gas . when its running it seems fine but as soon as it stops cant get it to start even if its warmed up

[@michaelhoobler7520]

What about the nylon washer under the. C clip on Needle ??? Is that factory or ad on ?

[@DIGIT9]

Factory

[@michaelhoobler7520]

Do u need them or not really i know it will change the hight some

[@michaelhoobler7520]

Do u need them or not really i know ot will change the hight some??

[@DIGIT9]

Ya keep that washer if you can !

[@michaelhoobler7520]

Thanks ricko u are the man

[@kenknutson4684]

Great video! I know this is an older video and not sure if you're up reading comments but I have a 1995 Arctic Cat Puma w a 340 in it. When I started it up this winter it would run for a bit then die. I would have to hold the throttle wide open to get it to run and if I let off on the throttle it would die. It keeps on flooding. I've cleaned and replaced all the parts in the carb, new fuel pump, fuel filter, cleaned the tank and put new plugs in. I've adjusted the new choke to 1/8" when pulled up. Air screw is 1 - 1 1/2 times out and idle screw is about the same. I'm perplexed??!! Any thoughts?

[@DIGIT9]

Did you clean or replace the pilot jet ?

[@kenknutson4684]

Yup. Cleaned it first then replaced it. Same result both times. Flooding

[@DIGIT9]

Needle clip in middle location ? Almost sounds like your needle is stuck ?

[@DIGIT9]

Your choke may be stuck open too ?

[@DIGIT9]

Are you sure its flooding or running out of fuel ?

[@samuellamont8539]

I have several 3 cylinder snowmobiles. Commonly known to foul a plug or 2 until engine is warmed up. Any tips on syncing 3 carbs. I use a meter that reads the air coming in through the throat of the carb and it helps a ton, but what do you do to really dial them in perfect?

[@DIGIT9]

Takes alot of time and a good ear !

[@Mogachaffe]

how often have replaced your needles, jet tubes on your snowmobiles over the years? Ive never replaced mine just cleaned them thoroughly 2x a year typically. ive always wondered if i would notice a tuning difference or butt dyno on my sled if i fully rebuilt my carbs.

[@DIGIT9]

Every 5 yrs or so ! I like my sled to run top notch ALL THE TIME !!

[@Mogachaffe]

Yea you sure do. Been following ya for a few years and watching you pull the plugs out after a long pull and think, wow he’s running on the edge but probably has a pretty good idea how close he can get without melting down.

[@louis-philippest-jean2166]

I have a 1991 Polaris indy 500 l/c, and i’m having a hard Time tuning the carbs. I’ve rebuilt the entire fuel system from the strainer in the tank, fuel pump, both carbs have been toroughly cleaned, rebuilted with kits and sync’ ed, and it Stills starving for fuel from idle to to top end, but if i only adjust the enricher (choke) so it is slighly pulled, it runs like a Champ. I’ve checked both crank seals , They does’nt seem to be bad, but vaporizing brake cleaner around them is not an exact science. I’ve checked compression, 110 on both sides. It is like my 20th sled, bought it to pull the sleigh with the kids around the house and it is by far the sled that give me the most intense headaches 😂. I was thinkin’ about putting 300 mainjets in place of the stock 280’s. i Also have bigger pilots jets to play with.

[@DIGIT9]

try raising the needles

[@curthazlett595]

My cousins boosted 670 carbs had super worn slide bores so worn it was wild

[@kapptinhook]

I just got a Polaris Indy 600 sled triple. I think it's an 87 LOL going to pull the carpet apart make sure they're all clean. Apparently the engine was just redone been sitting outside for a couple years. Any suggestions on where to get parts BC Canada. Thanks bro

[@DIGIT9]

Rec Supply , saskatoon sk

[@northernstoner962]

I have a 2001 or 2004 Yamaha sxr 500 runs perfectly fine but if it drops like 10 degrees it doesn't want to start and it sometimes has a issue of blowing spark plugs when going over half throttle trying to figure it out but kinda stumped

[@DIGIT9]

Clean carbs , pilot jet may be plugging ? Change fuel filters too !

[@olleahlnas299]

I tried for long now to get my -1975 Aktiv 600 with rotax 503 to run better, it only runs on 1/2 to full throttle, no idle, swapped the carb to a new mikuni (before it was tillotson) and it runs better but not good. Any ideas? Greetings from Sweden🇸🇪

[@brendongreen8008]

I got a question I have a 1996 polaris indy 500 it don't idle at all

[@danielreehoff9598]

Great video. I just totally rebuilt the carbs on my 02 polaris exsp- now my clutch side cylinder isnt getting fuel. I have spark but no gas. Any suggestions what i did wrong on rebuild of carbs?? (I rebuilt with carb kit and everything seemed spotless and perfect on rebuild.)thx!

[@DIGIT9]

Needle and seat might not be letting fuel into carb ?

[@danielreehoff9598]

anyway to test that off the sled? visual inspection all looks good. thx

[@DIGIT9]

@@danielreehoff9598 any fuel in gas line to carb ?

[@danielreehoff9598]

@@DIGIT9 yes fuel to carbs. one line feeds both.

[@DIGIT9]

Gonna have to take carb apart and redo !

[@ricklauragessler4508]

How do you fix throttle hang? I’m tuning a 2001 XCR800 and the idle loves to hang around 2500-3000 after it revs.

[@DIGIT9]

Check that slides are not damaged , check and lube throttle cable ! Also , check crank seals and carb boots ! Could be suckin air !

[@daveg2199]

Hey Ricki Happy New Year!! 🎆 I’m having trouble with my 99 Indy 500 carbs. They are both clean as a whistle everything stock Chokes are set correctly 3/4 out on air screws Slide bottom out at 7/32 Idle screws at 1/4 Both slides have wear spots from screw I used drill bits to set. All New fuel lines New plugs When Ice cold it starts on 3rd pull but I have to immediately start fiddling with the choke and the throttle to keep it from dying, for a few seconds, then it will idle off choke but high around 3000. Once we’re off and running it’s sharp and fast but when I stop it’s idling still very high around 2500 to 2800. Then if I shut it off hot for even 30 seconds to a minute it won’t start without choke and multiple pulls Plus wide-open throttle and throttle pumping to get it to start. Then once it’s idling hot When I hit the throttle it bogs completely out Unless I pump the throttle To keep it from bogging out then I can run Out of the hole and it’s fine again back to fast and high idle. Not looking for a race just a reliable family sled. Please let me know what you think. Thank you.

[@DIGIT9]

Try 1.5 turns out on air screw

[@DIGIT9]

Your slides may be set too high still ? At WOT , slide should have 1/8 -1/4" of play !

[@daveg2199]

@@DIGIT9 thank you I’ll try that! Out in the shop today👍🏼

[@DIGIT9]

Ya , almost sounds lean , drop slides a bit with idle screw first then try air screws

[@daveg2199]

@@DIGIT9 ok will do!

[@jeffgoodreau694]

Great video, thank you sir

[@RichardBrown-be3fm]

Where do you get the carb air filters? I am having issues finding them.. thank you!

[@DIGIT9]

Last set I got on Amazon !

[@RichardBrown-be3fm]

@@DIGIT9 copy. I bought a set on there and they were not at all what they were supposed to be. Must have been just bad luck. I will look again. Thanks for your time..

[@DIGIT9]

Have to double check your measurements , plus check part #s with K & N !

[@RichardBrown-be3fm]

@@DIGIT9 understood. Yeah the flange measurement was on. Unfortunately they sent me carburetors that were mushroom shaped instead of fairly parallel and perpendicular to the sled if that makes sense. The farther away they got the bigger the filter was and they hit on each other. But yes, I will do what you said and check it out.

[@DIGIT9]

Think the part # I used was 0800 ?

[@lewismartinbalebarontech]

How do you know how far open the slides are supposed to be when down against the stop screws.

[@DIGIT9]

Slides should be 1/8-1/4 " from top cover when wide open !

[@lewismartinbalebarontech]

Thanks, what about space when all the way closed?

[@DIGIT9]

The idle screw should just touch the slide when all the way down , thats your starting position , then adjust from there !

[@dennislorden3142]

I got a jag 440 bogs after holding it wide open for more than about 5 seconds choke seems to help it come out of the bog, I replaced fuel pump cleaned both jets new needle valve bypassed petcock, I’m wondering if it’s maybe the screen in the tank is clogged?

[@DIGIT9]

You got air bubbles in fuel lines ? Ya check filter in tank ! Raise needles in carb !

[@zakksrage]

That’s a sweet sled stand

[@MaximusHanson-h6i]

What could be going on with my carb if I’m losing top end power it runs great to about 20 miles and hr and then nothing it like Boggs

[@calebcragun6191]

I am working on my first snowmobile, and it has a double idle. I am not sure what is causing it. I have cleaned carbs multiple times, There is fuel to the carbs, I have checked for crankcase leaks with starter fluid, The exhaust pipes are clear, (someone before me swapped it for twin pipes) Air box is clean Could it be caused by a very rich(or lean) condition? Thanks!

[@DIGIT9]

What is a double idle ?

[@calebcragun6191]

@@DIGIT9 It will idle at 1500 when I start it, if I rev it past 2600 it will idle at 2600. I can get it to come down to 1500 by using the choke. I suppose it could be a hanging idle. It only happens at certain air screw and idle screw mixtures. I was turning the air screw in and a bog off of idle was getting smaller and smaller until it was almost gone, then I decided I wanted it to idle higher, so I turned the idle speed screw in and the double (or hanging) idle came back.

[@DIGIT9]

Try raising the needle ! Your starving it now ! Air screw should be 1-1.5 turns out !

[@calebcragun6191]

@@DIGIT9 I'll try raising the needle, I have it in the middle position now because when I took it apart, the e clips were broken. When does the needle come into action? Right when the slide comes up from resting on the bottom of the carb? Thanks!

[@DIGIT9]

Needle has affect from 1/8 throttle and up , but also affects idle a bit !

[@NEV3RL8]

Hey there,I recently bought a doo 600rs,problem is it idles very high around 5500rpm wondering what could be causing this issue?

[@DIGIT9]

What yr ? Carbureted ? EFI ?

[@davidsdetailingco.9635]

Just a question, on my artic cat jag single carb, there is not change when adjusting the small idle screw and only a small change when adjusting the big one, is the the result of an air leak somewhere else or??

[@DIGIT9]

ya could be ? Dirty Carb ? Crank seal leaking ? carb boot cracked ?

[@jeffauger8142]

Hey just cleaned my carb on skidoo and now I’m having problems with the sled reving way high I tried adjusting air idle nothing and my fuel air screw nothing

[@jeffauger8142]

I checked the floats I don’t think they got stuck… what could be my issue … or what should I adjust, the sled is almost wide open when starting

[@DIGIT9]

What yr sled ? What kind of carbs ? Sounds like your slides are hung up or in backwards !

[@jeffauger8142]

It is 94 skidoo tundra 300 was a stuck needle wasn’t seating properly , looks like it’s fine now running good “, I do have a question about adjusting to spec what should my air/fuel set screw be at !

[@DIGIT9]

Air screws usually start at 1.5 turns out !

[@trevorcreed2342]

What can I do fix my sled fouling plugs over and over.

[@petergrzela8691]

Got the same problem with my 97 mountain max 700

[@petergrzela8691]

Ik triples are known to foul out plugs but every 100 to 200km or so plugs are shot

[@DIGIT9]

check oil pump , make sure your running the right plugs , check compression

[@codyjohnson5674]

Digit9 I have a 583 that Boggs from idle to WOT. Is that a needle issue? It idles great and WOT is fine. It's just the initial hit from idle to WOT that's boggy.

[@DIGIT9]

Try new clutch springs and a new belt !

[@torrianoblossey1185]

I have 600 triple xlt my third carb slide won't come all the way done so I can re tune them im bottomed out in the throttle cable screw on idle screw backed all way off and slide still not all the way down any suggestions?

[@DIGIT9]

Check the throttle cable box or the slide itself , where cable goes into slide ! Something is getting hung up !

[@petergrzela8691]

Got a 97 mountain max 700 and runs pretty damn well but would like it to be perfect ;) some days it’s extremely hard starting especially not being ran for a couple of days but will start right up next morning one pull in the cold after being ran the day before, and fouls plugs like crazy I’m not to familiar with tripples but I’ll burn just around a tank of oil to a tank of gas on it not sure if any of this is normal or not since I’m much more familiar with older twins

[@petergrzela8691]

Also doesn’t want to idle have the idle set to around 2000- 1800 rpm which is probably high but only way I can get it to idle

[@danielschabilion9435]

Nah that’s about right

[@jaymrunner1155]

hey bud !!! I have a Mountain Magic ski-doo summit x! any idea where to find specs on CPC carb and Paragone clutch??

[@DIGIT9]

Well CPC is still in business , give them a call on the carbs , Paragons are tricky, call Ken at Mtn Magic , 780-266-7477

[@jaymrunner1155]

@@DIGIT9 sounds good thank you for the info👍👍

[@31viper1]

Of a 1992 grand touring formula 583 just cleaned the carbs in it and it starts up but it seems like it's flooding itself when it take sprag plugs out I'm just wondering is there anything I'm doing wrong and when I drive the square plugs put them back in and fires backup runs soon as you give the toddler it's bugging up I just want to know if there's anything I can do to fix that

[@DIGIT9]

Drop the needles one

[@aidencourneyea6434]

I have a 1997 mxz 670 and I want to run a jaws pipe what jetting do you recommend

[@DIGIT9]

depends on how tight they are and where you are riding , but prob 2-3 sizes over stock

[@nikolutkauskas5126]

Any ideas why I’m getting horrible gas mileage when I’m supposed to get 20+ easily? 1983 John Deere trailfire that I’m restoring

[@DIGIT9]

no such thing as good gas mileage in a vintage sled !! period !!

[@bigrach123]

I know this is an old video but I have a 97 polaris 600 triple that I put an epi clutch kit in at the end of last season. Now all of the sudden I'm not running past 7500 rpm, whereas I was getting up to about 8300 last year. Should I be adjusting my carbs?

[@DIGIT9]

Did it ever run 8300 with the EPI kit ? If not put your old kit back in and try it !

[@joeswartzack2350]

I have a 96 bearcat 340 FC. Rebuilt carb, new fuel pump , lines, gas and plugs. It starts, goes like a rocket but will not idle. It seems the air screw has almost no effect when adjusting. The idle screw is wound all the way in for it to try to idle...but I still have to feather the throttle to keep it from quiting when the sled is stopped. Any ideas?

[@DIGIT9]

Does it have reeds ? Cracked or broken ! Or pilot jet plugged

[@josephgillespie6108]

I got an arctic cat 550 out of a 1998 panther and I put it in a fourwheeler but For some reason it idles perfectly but when I give it any throttle it bogs way down and just before it dies if I hit the choke it comes alive again. It’s stock besides a 2.5 degree timing key and I’m 99% sure it’s the carbs but don’t know enough about how to tune them. Thoughts?

[@DIGIT9]

Take the timing key out of it !

[@josephgillespie6108]

@@DIGIT9 it was the same before I put the key in

[@DIGIT9]

You forgot to mention that ! Have you cleaned carbs lately ?

[@josephgillespie6108]

@@DIGIT9 yeah I think I found my problem though one of my choke plungers is probably 2mm lower then the other one

[@DIGIT9]

That doesnt help !!

[@willycoolman6432]

Best way to tune idle? I have an 07 rmk 600 ho and I've been working on getting the carbs set up. Last guy had it set for high elevation so I had to return it to my settings for 0-2000ft. I get reading plugs for mid and full throttle but I'm in the dark a bit on idle tuning. BTW these carbs on my sled have a idle fuel screw not an idle air screw. Any help is appreciated.

[@DIGIT9]

Are carbs sync’d ? Sometimes those slides crack causing issues !

[@willycoolman6432]

@@DIGIT9 I guess I mean off the crack not necessarily idle rpm. Ill check the carbs out next time I have em out but the idle chills out right around 1650-1750 rpm with no idle swings or hang. I just want to know the best way to adjust the idle mixture to make sure I'm not too lean or rich and for good response. A tuning video series might be awesome I'm sure there are a Lotta guys out there like me.

[@DIGIT9]

Then Adjust fuel screw till it works good !

[@adamarnold2075]

Where did you get your bar riser setup?

[@DIGIT9]

Custom made !

[@isaacbeauchamp9038]

Do i have to tune my fuel to air mix if i use a ggb can, cause my sled sputters at WOT, but is fine when i use stock silencer

[@DIGIT9]

Not a big fan of the GGB cans ! Call them and find out ?

[@isaacbeauchamp9038]

Thanks

[@jamiebouchard9862]

Will I need to retune my 96 formula 3 if I change from an air box to pod filters?

[@nathanorchard4705]

You probably should due to the increase of air flow your new pod filters will give you.

[@DIGIT9]

Absolutely !!

[@DIGIT9]

Pods are not a great idea if your lake running !

[@jamiebouchard9862]

@@DIGIT9 I’ve got the air box and it’s all together. The sled sat with gas for 6yrs and the carbs were the worst I’ve ever seen. Slides were corroded to the bottom of the carb and all the jets were corroded shut. I cleaned em and got it going but it seems to be weak on the center cylinder. At idle u can hear the pipe loading up and it begins to foul the plug. Bought a harbor freight compression tester. 40psi in all 3. Junk. Bought the $39 compression tester at oriellies and it’s 90psi around. This weekend I’m going back to buy the $49 tester cause I know it’s better than 90psi. Plus, it seems the 3 wouldn’t be exact if I had a low compression issue. Chances seem unlikely that all 3 have dropped to exactly 90

[@DIGIT9]

Might have to clean carbs a few times to get all the shit out of them ?

[@THS033]

My sled has a studder in the low end and a bad bog when accelerating, once it gets past about 7000 rpm it takes off like a rocket. It also gets insanely bad fuel mileage. Like 3 km per litre

[@DIGIT9]

Try cleaning clutchs and new springs !

[@THS033]

@@DIGIT9 will do, thanks!

[@trevorhenry7056]

I’ve got a 97 vmax 600 twin with twin pipes. Has a bog at 40 mph then when you hit the throttle it’ll bog for a good couple seconds then take off like a raped ape. Jetting up 1 size and needle in the .5 position. Been running that way for a couple thousand miles. What do you think could be the issue?

[@stevechristiansen9037]

If it has choke plungers check the bottoms for indents if they are indented (you will see a ring ) replace them because they are not getting a good deal and are allowing gas to pass through or your needle and seat is gummed up and not allowing enough gas to go pass through to keep up with your engine at high RPM

[@wtfbuddy1]

Nice video - out west you must have a different meaning for SMEGMA in your carb, but yes clean it out lol. Cheers

[@kendalmouritsen5385]

Sorry in advance for this rather long comment but anyways, I have a 1998 Polaris Indy 500 liquid cold and it has a really bad bog on the low end I had the motor board out 20 over on each cylinder rebuilt the top and new pistons new gaskets new rings etc. it has 130 psi compression per cylinder but it still has a bad bog I replace the pilot jet sizes by going one size bigger messed with the choke settings the nut on the top of the carburetor and the main jets did not change those but it still has that bog any suggestions?

[@DIGIT9]

Does it still bog with sled on a stand , back end lifted ?

[@DIGIT9]

What type of gas you running ?

[@kendalmouritsen5385]

Running 89 with oil mixed In as this is the first tank with the new rebuild

[@kendalmouritsen5385]

@@DIGIT9 I have not tried that yet

[@DIGIT9]

Check compression when warm , if its below 120 , use 87 octane ! Not sure how much oil you put in tank but that will cause a bog as well ! Have you cleaned clutchs and put new springs in ?

[@TeeBagMaster19]

I have a 98 XLT, and it bogs at bottom end but screams from mid to top????

[@DIGIT9]

Lots of issues there , air screw could be turned out a bit , new belt , new springs in clutch’s , bad gas ?

[@davidyonker7224]

I've got a 1993 Polaris Indy XLT with pipes. New to us but don't know any history. Cleaned carbs, new gas. Idels ok with a random backfire. Give it gas and bogs down and backfires. Any suggestions

[@DIGIT9]

also check the safety switch in throttle block

[@davidyonker7224]

@@DIGIT9 Thanks for all videos. Kind of new to snowmobiles, that's the little button in the thumb throttle correct? It looks like it's functioning. I have a parts sled also so I could swap it to see if there is a change. Some tell me it is running lean and that is causing the backfire. Just putting a list together of things to check. My son is pumped to be working on it with me. #raisinggearheads

[@DIGIT9]

@@davidyonker7224 make sure needles are in the right spot too ! maybe try lifting them to give it more fuel

[@davidyonker7224]

@@DIGIT9 Great call on the needles, they were set to run as lean as possible. I set them to the middle and now no backfiring at idle. Still back fires at higher rpm's when I let off. It does have pipes on it so should it need a little more gas? Thinking about raising the needles one more notch. Thanks again for all you help.

[@DIGIT9]

Yup more fuel wont hurt !!

[@thatmodshop7160]

Digital 8.5 lol good video well explained!

[@williamedwards7315]

For cleaning your pilot Jets one small strand of copper wire

[@jasonmunguia3219]

My snowmobile bogs down when I give it gas it's a1980 Yamaha exciter 440 runs and idals but bogs down and dies. When I give her gas .

[@DIGIT9]

New belt and clutch springs , clean carbs , new plugs , check compression !

[@mountaincat2001]

I wanted to be the first one to say thank you

[@DIGIT9]

You're very welcome! Thanks for watching.

[@nathanburroughs2646]

Nice cut up hand aye 😂🤙

[@Shadowmythx117]

Why are they rare? My 2018 has carburetors..

[@DIGIT9]

Parts for older carbs are getting hard to find.

[@dirtyfacegeorge9938]

I got me a Greasy triple too, 😂

[@jeremymartin1566]

Nice video , lol on all finger comments .... Jeremy M

[@DIGIT9]

thx Bud !

[@gavincdog2999]

Thanks man i am getting a hat i am exited.

[@DIGIT9]

BOOYAH!

[@WyoUltra]

I have a video of my sled running "weird" on my channel. I can't seem to figure out the problem. It runs great for a while, then it won't. Jetting is a tad rich (safe side), but the sled will get so boggy it's like it drops a cylinder. But pulling the plug wires proved they are both firing and not dropping off while running weird. Eventually after a while it will clear up and run fine, then run like crap again. if you have a chance I would appreciate your thoughts, otherwise no biggie and thanks for the content! 🍻

[@DIGIT9]

Yr , make , model , fuel type ?

[@WyoUltra]

@@DIGIT9 kzbin.info/www/bejne/iJOai4KNhKhgd6M 2007 IQR w/ 700 VES motor with slp twins into stingers.

[@kylebell5129]

Love your kids head bouncing around infront of you 👍. Almost sounds like its down into a safety mode. I had an old zrt that would sputter down like that. Spent alot of time going though carbs and so on untill one day I decided to crack the gass cap open, turns out vent on take cap was screwed. I no expert by all means and had run in with bad electrical gremlins that haunted me for seasons on end.. but by the way it sputtered down and shaped backed to life. I'd be also checking to see if there's not somthing going on there after you check that its getting all the fuel it needs. Hopefully there's some guys on here that had some run ins like what you got and guild you in the right direction

[@DIGIT9]

Ya , think you got something electrical going on ? Is hood rubbing on sparkplug tops ?

[@WyoUltra]

@@DIGIT9nope plug caps are on solid. I was going to comb through the harness and double check stuff... Just wanted more opinions on it because it seems kind of unique.

[@gerardjones7881]

If there's way more to it why didn't you cover it in the video.

[@DIGIT9]

Havent got there yet !

[@mudbrats]

Digit 6? 🤪

[@DIGIT9]

Darn near Digit8 for sure!

[@DIGIT9]

Digit Dangler ??

[@vintagepowersports81]

Hi there love your channel could you tell me what you think of this. Carbs are clean it’s getting fuel and air I think it’s a grounding issue or some sort of electrical problem. Let me know if you have ever seen this and what to take a look at. kzbin.infoxJVYH1xxopo?feature=share I haven’t dug into it yet haven’t had the time but I do think it’s going to be a cdi or something. I’m used to the older vintage points sleds this is my first newer old liquid cooled machine. Thanks for your advice in advance. Ryan

[@DIGIT9]

Sounds like its running out of fuel ! Have you checked fuel filter in tank ? Fuel pump could have crap in it ? Pulse line from fuel pump to crank case could be leaking ? Few things to check ! A cdi wont do what it's doing ! Also check compression !

[@mountaincat2001]

Wtf happened to your fingers?

[@DIGIT9]

Upcoming video😉

[@dk3062]

Shmoo, Shmagma

[@dandesjarlais4555]

Looks like you put your fingers where they shouldnt be alot ? Ahaha joking!

[@collinmckenzie6371]

little bit a SHMAGMA lol

[@gordtjs]

Triples are garbage bruh...lol

[@mikeharmon8733]

DIGIT9.. I get it now. It looks like you are working on DIGIT7? Be good to yourself! Thanks for making the vids!

[@Braapcity]

My first question, what happened to your finger?

[@DIGIT9]

Theres a video on that !

[@nathanhobbs9334]

I have a 1996 skidoo skandic 380. I cleaned the carburetors put a new fuel pump on. It idles fine and mid-range. No top-end unless you pull the choke. Advice?

[@DIGIT9]

Do a plug test ! Should tell you if its lean or fat ! Hold wide open for 5 secs , hit kill button , roll to stop and check plugs ! Im guessing you are lean ? Bigger main jet ?