tjakes680

So i just started quad from ice cold sitting about 4 hours off and it starts and idles but dies when i hit thumbb throtle sound slike its choking on air I did replace the fuel pump about 2 months ago I think its a dirty carb The carb was off another quad same year that was sitting in a shop for awhile and stupidly i never cleaned it or rebuilt it i have a rebuild kit so ill rebuild in am

I changed plug old was fould out lean its at full throttle from 3/4 - full I stupidly put a old carb on i had 3 in a box and of course i picked the one that was dirty has to be that im going rebuild it tommorow

I believe dirty carb i stupidly put a old carb on that i should have chked forst im going rebuild it tommorw or put a clean one on that i have im almost positve its that

I have a 86 LT quadrunner 230 GE I had a post about high idle i couldnt fix well it was the boot so now its fixed but im bogging out on full throtle I think it may be throtle cable as i had to make adjustments to it because it was getting high revs when turning handle bars but now may have to much slack though it seems like its going up and down good on carb . Do you guys think its a carb issue or a throtle cable ? Idles perfectly but I will say i did put a carb on i had in shop OEM for this quad but i honestly dont know how clean it is I do have a chineese carb thats brand new i dont know why i just didnt use it but thats neither here or there Thanks in advance its been a few weeks of hell with this quad and its so close to being a beast again

So got the high idle issue solved but now im bogging out at full throtle

Here is what im changing and all the fuel and vent lines as well ! Got these from a really great seller on ebay who just took these off a running quad for me same exact machine

Ok so I finally have a day with out freezing temps so going back at it again . I have a new boot ( used but looks good ) and a new round gaskit for inside boot a new OEM carb ( again a rebuild) all new fuel and vent lines a used air container the one on front of quad( the long white one ) not the air box a new air fiter for the long white vent piece air container I believe its called all new clamps for vent ducts to air box and used but in great shape air ducts So basically rebuilding the fuel and vent systems on quad I will post results after this im out of options but going into this with a positve additude !!!!!!! Ohh and not forget new throtle cable lol

Yes i also ordered a new oring new bolts but noone has a new boot had to get a used one but from a place I buy alot of used parts from they chk parts and rebuild some so should be good thanks again ill post final results should have all parts by Feb 2-5

Just ordered new intake boot for engine sode with new bolts and ordered a aftermarket carb 40$ just to give it a shot but im almost 100% my carbs are good but ill do the boot and take it from there ill post what happens when boot is installed

So I started the whole process over and took it all apart took out and installed new fuel mix screw and it ran great for about 10 min or so i mean absolutly perfect no backfire no pop no high idle maybe about 15 -20 min and wharn it got warmed up and hot it started high idle all over again I would think the rubber boot heated up and expanded and started leaking because when its cold i can get it running perfect once heated up no good so time to find a boot on ebay

So I used the starter fluid on boot idle speed went up even higher so i asume there is a leak now on the boot is a nipple that pulls vacume for fuel pump witch i just installed a used fuel pump a month ago , when i pull that line off and put my finger over the nipple idle slows down a measurable amount till it runs out of fuel , so i tryed a new line to fuel pump same problem is it possible the fuel pump could have a small leak or a small vacumn leak in one of the lines coming off it and thats pulling to much air or is putting my finger over it just blocking more air so itll slow anyway ,but again the starter fluid deffintly sped up idle when sprayed on boot . My next problem lol is screws holding boot ofcourse have chewed up heads lol im going spray liqud wrench hopefully they come out without having to score them with dremal ughhhhh I deff know slide is good and working and boot has leak somewhere ! I think its around the nipple where vacumn goes Getting closer!!!!!!!!!!!!

Thank u my friend I deff will say choke is working and slide is going down I actually used 2 diffrent carbs and they both do the same.The only thing I may have done wrong but i dont think so is the mixture screw in manual showed screw spring rubber seat metal washer and what I always knew and have done is screw spring metal washer and rubber seat But thats how I have rebuilt every carb I appricaite ur help and will post when im done I will get it sorrted out thanks again my friend

So basically what ur saying is engine side air leak is only way it will affect idle speed ? I actually had it running ok and seemed a little fast but then it went off once i hooked up throtle cable to thortle so i dont know if i moved the carb its on very tight the carb so i dont think itll move I also have a bigger clap on engine side of carb maybe its too tight and cutting into boot so hard to tell .Its so bad fuel air screw is basically useless manual says 2-3/8 ths turns but that seems like alot on fuel air screw i will spray boot with some starteer fluid and maybe ill see if it leaks Thanks for ur help its a very time consuming and fustrating process

Neear engine side it just revs so high im going to spray some carb cleaner or starter fluid by boot going into engine it has to be leaking there i would think

Went back at it today slide is going down all the way had it good for about 1 hour and then it started riving high again i checked all air lines ducts couldnt see any visible tears or cracks I did howere seal one duct that comes out of air box i believe it was glued in from factory looked fo have a gap but i couldnt seal intire joint to tight to get bottom I may get a new air box saw one on ebay for 30$ its worth a shot. I just dont know where this air is coming in from Does anyone know of a way to check for a leak on air box ?

Is it possible that the top of cylinder haad could be pulling in air ? There is deff alot of old crudded up oil and gunk on it im going to dig into it today, im going to dissconect throtle cable and see if it will start with slide all the way down and ill know for certain it is if its still racing i can then say possible air leak i have chked every possible spot on air box and air lines i just dont see any cracks and ill chk boot that carb hooks into engine with its deff old but seems ok .I know its a easy overlooked simple fix but its so hard to find Like i said if I block off air case intake it seems to work fine but what would cause this to change from never being blocked off ? Here is a blue print of air intakes

Yes im pretty sure its sliding all the way to bottom i will test it today Im also will take some pictures today maybe it will help

Its a mikuni round slide im almost 100% the slide is going all the way down im going to change the fuel mixture screw thanks for reply im going to look into the flange where carb hooks up it is pretty old

I have a 1986 LT230GE quadrunner shaft drive machine ran very good up till about 2 months ago I rebuilt carb and had to much air coming in I found it was a loose duct then I relized throtle cable was getting stuck so I changed that . Now again to much air everything is tight no leaks in ducts from what i see Infact I had another OEM carb I rebuilt and put that on just incase i messed up rebuild of first carb and same problem the only way I can get it to stop racing is blocking off the white long air box that goes from air filter to under dash board in fact when I pull up choke it will slow down when i block air box . Does it sound like a duct is leaking the white air box goes into a leather bag i guess thats a filter but its doesnt seem to do much and the air fuel mixture and idle screw are basically useless on carb ! Should I possibly change the hight of needle in carb to give it more fuel but will that fix the problem ? Im at witts end any suggestions will be apriciated and helpful im going to seal all duct joints tommorw but should i block off the main air vent (white one ) its more of a band aide fix I would really want to fix it right thanks

I have a 2014 F150 and a good set of ramps Im able to put 2 quads on if I take my tool box off or if im alone 1 is all i need I would like to get a trailer so i can take both quads and my dirtbike without taking my cab box off Thats awesome

I found it was throttle cable the covering is coming loose at the end of adjusting piece and when im working on carb and I turn bars to reach thumb throttle it pulls the wire So I had bars facing the way it was putting pressure on cable I ordered a new cable and will replace it this week Once I figured it was cable i got idle and carb set to normal idle Thanks for advice

You can never go weong buying tools if u use it 1-2 xs it will pay for its self because a smoke test in a shop is expensive very expensive

U can use a air conditionr air filter for temporary I have in a jam

Yes they are very good but I think i got it now my throtle cable is hanging up so when I turn bars while adjusting carb its racing from cable Ughhh Just ordered a cable so once I had my son hold the cable from where it was coming apart by adjustment screw on cable it went down to perfect idle no popping so hopefully this will be it! I took it out for a ride and as long as cable was good it ran best it has in a while But I may get that smoke machine for my garage because i have a leak on my pickup truck 4 wheel drive IWE system but thats another story lol Im doing a leakdown teat on quad this week also thanks again ill post how everything is when cable comes

So heres my next problem if anyone can help pilot screw out 2-3/8 ths as per manual engine revs high go to use idle screw and it does nothing till i screw pilot back in about 1-1/2 turns and getting slight backfiring Maybe I should change setting on jet needle to ake it richer im about to pull plug to see color! Im really at witts end i dont think or feel like throttle is getting stuck and i took it for a ride and runs great just slight popping no bang no pop when it shuts down if i leave this setting .Could carb body be so worn out inside that needles are a little to big and air is getting in ? It is origonal and is 36 years old