PART 2 Honda gx160 carb rebuild GX200 GX240 GX270 GX340 GX390 

The oil level sensor could be causing shut off momentarily at higher rpm. Is the oil level full? You can also try unplugging the oil sensor (side of the engine below the on/off switch) to determine if this is your issue. The fuel air ratio can only be adjusted with a new jet. If the spark plug is dry, black and sooty then it could be as simple as a dirty air filter. If it is wet and black it is fouling from oil (worn piston rings-valve guides).

i believe you're talking about the governor spring tension screw. It should raise the overall rpms when it is screwed in and lower the rpms when it is out.

With a glass pack you don't even need a bend. It can be straight and it won't hurt the motor.

Most mufflers can be split apart and you can remove the baffles. Or you can just drill some big ass holes in it.

Honda gx160s use high quality reusable gaskets. But they can leak and the restriction from a dirty air filter will help richen the fuel air ratio. I would think your carb isn't delivering enough fuel to the engine and it partially clogged. Either way you will need to remove the carb to inspect.

@georgesmartuk ... Thanks for watching.

Sounds like something the Go Kart manufacturer put on. I would set it to allow full throttle when you push the pedal.

@BaldPunk1 .........GREAT...I am glad I could help and save you money.

@BaldPunk1 ....Your main jet is clogged or you're not getting fuel to the bowl.

@lukewill783 On part one at 3:38 I remove it. At 8:10 I clean it. You spray carb cleaner through it.

Yeah it can be. But it makes it louder. You need a little back pressure like a curved straight pipe or a cherry bomb type (I have a vid on how to make one of these).

Okay, I cleaned again. You were right! Thanks. I think that little nut was clogged.

Thanks for this post. You would make a good teacher.

@human4m ... Is it an instant kill? Does it do it if your not moving?

Thanks very much. This fixed my problem on the Honda GX140, where it would only run on full choke. Very informative. Cheers mate!

@BaldPunk1....Ok. Then the main jet is clogged.

to add to my last post, the oil level is good, too.

I'll take it. Thanks for watching.

Raising the rpm to much can cause damage.

ya i wish i could make one but i don't own a welder, its to bad you did not make them to sell. a bigger pipe would look sick on my honda gx160

You would need a tachometer to set it. I would just screw it in 3/4 of the way and it will be real close.

Is what bad for your motor?

hi i was curious if you could put up a video of how the carb and the springs are all hooked up because my friend took apart my throttle linkage assimbaly and im not sure how it goes together it would help me out greatly thank you

broken after put petrol from rusty jerris thanks for posting vid to stop more problemes with rust i will put in petrol filter have you any advise? p.s. I used air compressor instead of using my mouth

i found the vid so if i wanted to i don't have to use the glass pack i could kust make a straight pipe with a bend and it would not hurt the motor

I unscrewed that brass nut and blasted the carb cleaner through the pipe, which is the main jet, right? So I think I cleaned the main jet pretty good, but???

G'day mate, I've got a GX160 and the thing randomly died. Wouldn't start or run. So I threw a new spark plug in it and away it went.. just. Issue I'm not having is that on full throttle it build up its revs & dies when at full revs. As the revs come down it lights up again, builds up its revs & dies and so on. Could you shed some light on what it could be? Also how do you adjust the idle air/fuel ratio? Cheers, holdenv8superstar (Australia)

HI, battling a gx160 as we speak. What about the gaskets where it mates to engine block? Also it seems like if the air cleaner is off it wont run well at all. Is that accurate or some other problem I have. Makes no sense to me. thanks!!

ya if you hit the throttle by hand in front of the carb there is a screw that when you tighten it in it only lets the throttle go so far up i was wondering where it should be set at

i have my motor on a go kart so when i push the gas pedal in it only goes so far even if i were to unscrew the screw more. i think the throttle cable it self is set to only allow u to give it so much gas witch i am assuming is part of the govern that's causing the throttle to only go so far.

well i screwed it in just before it touches the throttle because like i said the even if it was all the way opened the throttle only goes so far back. and one other thing is it safe to make your own exhaust pipe or how do u make the one it comes with louder. because i want it to sound louder

I've got a tiller with a GX140 motor, same carb though. It sat for a year and fuel went sour. Now it will only run if i keep putting gas in to the top of the breather. Do you think it just needs a good douchin?Also do I need to count the turns on the main jet screw or just snug it up? Thanks in advance and thanks for the great video.

hi i had a question. if you look between the car and the exhaust box there is a screw that has a spring on it, if i loosen it will that hurt it and if so ho far out should it be. because if you screw it all the way in it does not go as fast it has something to do with the throttle

@sixtyfiveford My father in law built a go cart for my kids using a GX160, but for some reason, the engine immediately cuts off when you turn right! I've checked everywhere for possible ground faults, oil level is good, and I don't seem to have an oil level sensor that would shut it off... Any thoughts?

@lukewill783 Thanks :)

I followed the steps, but my GX160 still runs for a few seconds and shuts off. But I have to use starter fluid to get that far. It's like the gas is "bad," though I changed it before I cleaned the carb. The gas is maybe 2 months old from the can, and it works in my lawn mower. What else can it be?

Great video, true mechanic

ya can u give the link to the video about the exhaust pipe becuse i looked through your vids and could not find it thanks

some say it is bad for you r motor if you have a straight exhaust pipe with no baffle

But when I unscrew the nut in the bottom of the bowl, fuel leaks out.

how do you clean the main jet?

What are those blue sheets that hes using called?

why didnt you clean out the fuel tap bowl?

ya but is that bad for your motor if you do that?