I want some help with carberatur trouble.

[225 Trimoto]

My 3 wheeler has been surging I only have to hold it half way and it starts backfiring don't know if it's the carb or what

[Jmoozy27]

Have you cleaned it lately?

[225 Trimoto]

:(
Have you cleaned it lately?

I have cleaned it and i have tried adjusting the fuel floats in the carb

[Jmoozy27]

Whats the history of the trike? Did you just get it? Have you owned it for a while and it is just starting to show symtoms? Are you running it with an air filter/air box?

[225 Trimoto]

I have had it for a while it has been doing it for a while it had shifter problems before

[225 Trimoto]

:cry:
I have had it for a while it has been doing it for a while it had shifter problems before

Yes i have had it for a while it has been doing this for a while i got it last August. It has a filter box but not a filter it is a 1984 Yamaha 225 Trimoto it has had shifter problems before i want to fix it because it had a lot of power before it was like this recently it seems to have gotten a bit worse

[Samjp22]

Should really get an air filter for it, all the dust and dirt is no good for the carb and lost of extra wear on your motor

[225 Trimoto]

Ok i was wondering but where do you get cheap carbs from?

[225 Trimoto]

I mean cheap air filters

[Samjp22]

Might be able to find a uni air filter for it, check on eBay, they're foam OEM replacement filters, I have one on my 250r works good decently priced

[Samjp22]

And also might be able to get a rebuild kit for the carb off eBay, not too sure though

[225 Trimoto]

Ok I have looked for a carb rebuild kit on ebay but they are either separate parts or else a pieced together thing by someone else

[Jmoozy27]

Your carb need a good cleaning, all of the jets need to be soaked in carb cleaner and all of the orifices need to be blown out with compressed air until dry. If you arent running an air filter than you are getting crud in the carb. It doesnt take much crap to screw up the way a carb runs. Maybe even get a service manual that way if you have any other problems you will have a idea on how to solve it. Ytms are solid trikes and require little maintenance and are very enjoyable.

[225 Trimoto]

Thanks ill try it

[Jmoozy27]

Let us know the results

[225 Trimoto]

k ill let you know the results by the way do you know the settings for the air and fuel and float

[225 Trimoto]

k ill let you know the results by the way does anyone know the air and fuel screw settings and also float settings for 1984 Yamaha 225 Trimoto carb

[Jmoozy27]

I want to say the air fuel screw needs to be 1 3/4 turns out for factory settings. I wouldn't try adjusting it without an air filter as that will be counterproductive. The link below has most of manuals.

http://www.oscarmayer.net/atc/manuals/

[muthey]

check your main needle, dealt with an issue like that before and found my main needle was wore, which was causing a fluctuation in my throttle. 1 3/4 to 2 turns out should be your starting mark for idle air mix.. Also those turns are with the air filter oil bathed will be different if you run it dry.

[225 Trimoto]

K ill do that my needle is bent so maybe its going beside

[muthey]

there's your problem right there you need a new jet needle, or main needle which the manual says is a 5L10

[225 Trimoto]

Does anyone know the factory air screw turns

[muthey]

factory is for the vm 22 carb 1 1/2. That is the stock carb for the 225 dx

[muthey]

the 225 drs which uses the vm24 carb is 1 3/4

[225 Trimoto]

the 225 drs which uses the vm24 carb is 1 3/4

Does anyone think it might be the timing or ignition or cdi
it surges and that other advice didn't help much but maybe it's getting to much gas not sure how to adjust itthough

[trikejunkie]

Like to mention if the carb is anything like a Honda 200 make sure to check the adjustment nut on the carb cap where the throttle cable comes in. Mine got loose and made my 200s surge while idling, tightened it back up ran fine. But it could be carb cleaning issue.

[225 Trimoto]

The cap isn't loose and i just recently cleaned the carb i tried starting it tonight and the first pull started and died rite away so im thinkin maybe cdi but maybe im wrong i don't know to much about fixing ATCs

[Six Stroke]

Start with a good tune-up first. Get a new air filter, spark plug, and set the valves. Also, make sure you don't have an air leak somewhere, like the o-ring that seals the carb to the manifold.


Also, check out the petcock. Make sure it isn't dirty/plugged.

[deano56265]

I had that problem too!! I had just cleaned carb, got it running and took it out to ride and had 1/2 throttle w/ backfire. Local mechanic said clean carb again, check air filter, and make sure rubber boot to air filter was on correct. I cleaned and put new boot on and worked fine after that ... GOOD LUCK!!

[225 Trimoto]

Does the air filter need to be oiled? Should i ask a mechanic? Because mine has a new air filter i cleaned the carb do you think it could be the valves or timing? or some other electrical?

[muthey]

yes the air filter is oiled requires different jets to run it dry.

[225 Trimoto]

k do you think it will make it run any better (if i get it running)?Do you think its the vavles i have probably asked this question before.

[muthey]

it should help and yes you could have valve issues as well, wouldn't hurt to check it out yamaha's tend to tighten the valves when you need to adjust them, would think they would get looser but it's the other way around I have always found them being tighter than specs. double check on your compression as well and I would check for air leaks on your intake manifold and the airbox tube.