Help with yamaha 225dx carb? or??

[Paul]

Hello everyone, this is my first atv and i am clueless about em. I did ride a polaris 400 4x4 once but thats about it, I bought a 225dx a few days back, the guy said it was his dads and its been in the garage for 3 years. I got it home and tried starting it and it wouldnt start, i took of the carb, and the fuel pipe and the air one were clocked up, i blew them out and its started up up, i was happy with that but when i got on and took it for a ride after about 2 min it started choking and barely going, maybe 1-2 miles an hour:( it just wouldnt rev up. I took it back into the garage i changed the spark plug with a new one and took the carb back of and checked it all again, it wasnt clocked up or anything, well i started it up and again it ran really good for about 2 minets or so and again started choking or something????? when i took of the fuel tube to check if the gas is coming in and to my surprise the engine reved up again for a few sec and then died out of gas, i took out my spark plug and it was pure black:( and now i dont know if its overfilling? and if yes then how do i change that? or is the fuel to rich? and how would i change that???? or is my air blocked somewhere??? please help me i have spent over 20 hours on that thing taking the carb of dozens of times, without any results it will run a bit and the slow down to 1-2 mph and wont rev up at all:((( How do i fix that?? and one other thing the back of my bike where i am guessing my air filter should be there is a big square whole with 4 bolt wholes in the sides, am i missin somthing else other then the filter??

Thanks, any help would be really appreciated, i am just so confused, like i said my first atv!!

Thanks in advanced:)

[Dirtcrasher]

Did you remove the jets or just the fuel bowl?? Remove - carefully - all the jets and seats etc. - if you haven't already. It only takes a little bit of crud to kill it. Unless it had a previous problem before it was stored.

[smokinwrench]

You are missing a plate on the back that holds the air filter tight against the front of the air box. When removeing the jets you can take a tiny peice of wire and clean out all the tiny holes (not supposed to use wire but it works). The spark plug should be gapped at 0.028. I fought mine for a couple days when I got it. Good luck

[Lots_Of_Nothing]

hey, if you need that plate on the airbox i will sell one to you

[Paul]

How much do you want for it????? my email is paulf@cet.com

Thanks for the info i will try tomorow, does it matter what kind of a spark plug it is??one store gave me a e7 the other gave me e8?? so you guys think the air is clocked up?

Thanks all the info is really helpfull!!

[tecatecrazy]

sounds to me like your main jet is plugged, I would definately start there. The reason it revved high when you took the fuel line off is because doing this caused a lean mixture with what little gas was left in the carb and then finally ran out of gas to kill the motor. My guess though is a good carb cleaning.---Joe p.s. im not an expert by any means

[smokinwrench]

NGK D7ea or ND X22ES-U are the spark plugs you can use. A good parts store should be able to look it up. I have the manual on this bike if you have anymore questions. Good luck

[Paul]

One more thing are this jets supposed to be tightend all the way or are they supposed to be adjusted at a sertain point?????

and is there any way to find out the year of the thing????


Thanks you very much:) I got a lot of hope now, and will start trying it out first thing tomorow morning:))

[atckowalski]

MAKE SURE THAT WHEN YOU PUT THE FLOAT BOWL BACK ON, THE FLOATS DO NOT STICK. IF THEY STICK SHUT,LIKE MINE HAVE DONE IN THE PAST,YOU WILL RUN FOR A FEW MINUTES THEN RUN OUT OF GAS.

SOON TO ACQUIRE ANOTHER TECATE 3

[Dirtcrasher]

One more thing are this jets supposed to be tightend all the way or are they supposed to be adjusted at a sertain point?????

and is there any way to find out the year of the thing????


Thanks you very much:) I got a lot of hope now, and will start trying it out first thing tomorow morning:))

Depending on the carb the jet set up is different. It's kind of funny I've made parts on a mill that took 20hrs. ran into thousands of repairs but only recently have I removed jets from a craburetor. I think like most people, to me cleaning a carb was washing it with gas outside and removing the fuel bowl and float setup and dousing them also. But especially when gas has sat in the carb for awhile and it has that smell you need to remove all the jets, adjustable screws etc. clean them with gas, CRC and compressed air. The two jet setups recently that I dealt with were different but similar. They all thread in with positive stops. When the jets are removed and the housing cleaned again other inserts will fall out when you tap the side of the carb or use air. I found that repeated spraying with cleaner and blowing them off will clean them spotless, why use wires that according to most people WILL slightly scar the soft brass metal and disrupt the mixture. I did use plastic items to assist popping them out and a pipe cleaner to clean the larger passages exposed when the jets are removed. As far as the screws which are adjustable mark there location down on a sheet of paper such as 9:00 when the carb is straight up, then thread them in counting half turn, one turn etc. They will bottom or stop at the end maybe 3.5 turns. When reinstalling turn out 3.5 turns and end at 9:00 just as it was. This may not be correct though as someone may have messed with them before, this is when you need a manual which states 2 turns out for the pilot screw or whatever. Remember this only aplies to the adjustable screws! ALL setups are different but it should be obvious when you look at them which are an adjustable screw or just a tightened down jet. And jets really just means "holes in pieces of hollow tubing" they are no more than that. Lastly another reason the book helps is we've all taken something apart, blown with air and ZING across the room flies an O ring and you know your fluked now. So take care to not do that! Hope this helps. :-D

[Paul]

I am going to my garage right now and cleaning out those jets:) i really hope this works, and if it does the only other thing i will need for my bike is the battery, where is the best place to get those?? the dealer wants 55$ for one, do you know where i can find a better deal?? and is it a 12 or a 6 volt does anyone know??

Thanks a million:)))

[Tri-Z dude]

its a 12 volt battery
i can get a battery for my 225DX for about 12 bucks from our sams club in the city
Ben

[Paul]

:(((((( Ok, I took out the jets, there is only one that has a spring to it and the other two dont, so i am guessing that they gota be tight all the way down, and the one with the spring is the only one to get adjusted, but i had to go to church and didnt have time to play with that, but i did clean em all out, gas, compressor and a plastic tiny niddle, its all clean but still does the same thing, in 1 min it wont rev up at all and kills my spark plug:( i will play with the other jet with the spring today or tomorow morning, i was thinkging could it be something with ignition? or maybe i am missin something out of that carb? is there only supposed to be one jet with spring??? i am so confused already:((((((



P.s...lucky you, a battery $12, i would have paid that:) i am going to go around a few of our battery places, see what they tell me!

[HemiChallenger71]

I did not read anyone's post but paul's first post. It sounds to me like the carb might have the choke on. Jsut a thought.

[smokinwrench]

I think the jet with the spring you are talking about is thepilot screw tighten it up all the way then back it out one and a half turns. That is a close staring point. All the other are tightened all the way down. You might want to check your float level. put a clear hose on the drain valve at the bottom of the bowl then run it up beside your carb. Run the engine and see where the level is at it should be just below the top of the bowl. If it is wrong you will have to bend the tab on the float to change hieght. It will run one of these times.

[Paul]

Thanks Smokinwrench I am going to try that first thing in the morning, i was wondering how to set that float:)) but to the reply of the other post my choke does cover up up checked on that. well that leaves me to some more hope for tomorow.

Thanks you for your time and help:)

[smokinwrench]

I dont know if a 4 stroke could do it or not. But, I have had 2 stroke weed eaters plug up the exhaust pipe and run good for just a few seconds and then die.

[Paul]

Ok, my main jet has a thread inside it like there is something else missing from there, would anyone one know??????? and when i took out my pilot skcrew, the spring was on it before the rubber gasket, is that right??

Thanks

:) its running a little better :) i will stay at about 5-10 miles per hour now, as long as i dont push the gas all the way....but i dont know what actualy helped!!!!

[Paul]

:?: :?: :?: :?: :shock: :oops: Thats the sixth spark plug that died on me:((((

[Paul]

Does anyone know by the manual whats the right adjustment for the needle?


I still think that main jet might need something inside it? whats the thread for?? i put a little srew in there but that fully blocks the fuel flow:(((

I bet i can take that carb off and on with my eyes closed :? :( :( :oops: i just dont understand this carbs:(

when you take off the carb, take a look at the choke assembly. the slide in there could be sticking and allowing all the possible fuel to go to the engine. or the o ring could be shot. when i start mine up, if you put it on full choke, the engine wants to sputter, but run, so i imagine that if it was sticking open a little more, that it would only run about 10 seconds btw, the choke on that engine has to do with gas flow, not air

[Paul]

Well actually that is the very first thing i checked on the carb, I went and both the new o-ring, and checked if the choke leaks any air and it does not, but if i do open it a bit when its running it makes things way worse, is there any way that it could be the gasket??? a lot of people tell me that my ig timing is off, but i dont know how to fix that:((

thanks

[atckowalski]

THERE IS A TIMING WINDOW LOCATED ON THE LEFT SIDE OF THE MOTOR. IT HAS A SMALL RUBBER OR PLASTIC QUARTER SIZE COVER ON IT. REMOVE IT ,AND LOOK IN THERE. IT SHOULD SAY ON THE CRANK(IN THE HOLE)THE LETTER T. IF IT ISNT LINED UP WITH THE T YOUR TIMING IS OFF. I AM NOT TOTALLY SURE, ITS BEEN AWHILE SO LET ME KNOW WHAT HAPPENS.I DO HAVE A BOOK IF YOU WANT ME TO LOOK IT UP.

[smokinwrench]

The ignition timing is non adjustable. If you have timing light you can check it like you would on a car. The "F" mark on the flywheel inside the inspection hole should be in alignment with the stationary pointer. if it isn't the stator might have came loose. If you dont have a timing light you can turn the engine over until the "T" is in the timing inspection hole. Both rocker arms should be loose, but make sure you are on the right stroke. There will not be much play in the rocker arm. The intake valve adjusts to 0.002-0.004 and the exhaust at 0.0043-0.006. I have checked mine a few times and have never found them to be off enough to amount to any problem. I may be wrong but it might help to remove the cable from the choke and install it all the way by hand then put the spring and cap on it with out the cable. I would also take the baffle out of the end of the exhaust pipe, just incase it is plugged, if nothing else it gives it a better sound. The needle jet should have the should have the clip in the middle groove. Raising the clip will lean out the mixture in mid throttle opening and lowering the clip will richen it up. Looking at the manual it doesn't look like any thing screws into the main jet and I can't remember on mine. I'm wondering if your not missing a oring that seals at the end of some of the jets. A good yamaha shop should print you off a picture of this. I hate to be the one to say it, because I hate paying labor bills. If you gave the shop a dollar figure on what to spend on it they could probably figure it out in no time for less money than you think. Good luck hope your riding soon.

[Paul]

Thanks smokinwrench, I did try to take the cable of from the choke, didnt help, I did raise the clip to the top which made it much better, I will try to take of the baffle out tomorrow, and i am going to try and win that carb on ebay, and if that dont help i am going to the shop. About the o rings on the jets, only one of my jet has an o ring, the other one doesnt, i dont know if its missin or if thats the way it is? I did have my dad over today and he listed to the way it works and he told me, he thinks its leaking a lot of air somewhere, a gasket or something, and thats why my pipe gets so HOT, i just noticed today it melted my air box:(( so i will try and look at that tomorow too:)) thanks for all your help everyone, i am still kinda surprised and glad with all the replys and people trying to help:)) this site rules, its awsome:) :rolleyes: 8) :D :o :-D :) Thanks a billion everyone:)

[Paul]

Finally its purring like a kitten:)) Like a really MAD KITTEN:))))) :D
I took the carb to the yamaha dealer and he told me i am missing a little part from the main jet, i put it on and WOw what a diffrence,,,,, Thanks a million to everyone's help:) this site does rule:))))) I am going out to ride:) The only other little problem with myne that i didnt even try and fix yet, is that my lights are really, really dim:( but i am going to try and clean all my conections, THanks again, I AM RIDING NOW:)

[YamaChuck]

Enjoy Paul.