1985 Honda 125m Engine RPM idle problem

[Bashula]

I recently had a problem and I fixed it now I got it to start but when it starts it's at normal rpm then it slowly creeps up to scarry rpm speed like giving it all the throttle and when I do hit the throttle It sounds like it wants to kill me sounds like the piston is going to explode and no I only gave it a little gas.

Thanks,
Bryan

[Jmoozy27]

Does it have the original steel tank? You may have a gas cap vent that isn't functioning properly. First turn it to the on position. And then remove the cap. If it sucks air then that is your problem.

[Bashula]

Idk Im at school ill check and it would not change gears too I really don't know.

[Bashula]

No I don't see anything it sometimes works when it is cooled down for about 10 - 15 min then it has a temper tantrums and goes really loud then it stalls then it don't work.

[Craigolsen18]

You might have a vacuum leak check your intake manifold for cracks or leaks. After doing that make sure all the screws on your carb are set correctly according to your service manual.

[Bashula]

OK thanks ill try that

[Craigolsen18]

Welcome, here is the link for your service manual.

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

[briano]

Clean your carb. Also, pay attention in English class

[GONE MUDDING]

I'm new to this 3 wheeler thing but I had the same problem check your carb and make sure your idle screw isn't bouncein around in the carb

[Bashula]

I fixed the killer noise but now it stalls in the middle of the road and I have to push it back before it stalls it makes a loud noise like a bang bang then it dies I've check and there is gas I'm thinking I'm flooding it or there is not enough gas getting to it.

[Jmoozy27]

Yep a good carb cleaning can fix that

[Bashula]

I already cleaned it sparkling clean before this and put new jets and everything, nothing is leaking then I put it back together and started it and start the thing at the top of this forum then I fixed that then I am down to this. Could it be the fuel filter? That for me is the last thing on my list I don't understand why it would take 20 min for it to start after it starts once.

[Craigolsen18]

Your making no sense what is it doing now be accurate and descriptive. Just say what it's doing nothing else

[Bashula]

Ok sorry, I start it up and I get about 2 minutes then it just stalls for no reason, it stopped making the banging noise. Then I can't get it started until I wait for 20-30 min then I can start it then it stalls.

They where talking about the carburetor I cleaned it, and I set the fuel to air screws to factory specs from the manual.

[Craigolsen18]

Ok good, I noticed you said you had a fuel filter? I would remove the fuel filter completely(because your petcock has a filter built it) and see what happens. Sometimes fuel filters don't allow the proper fuel flow that is required by small engines.