21mm OKO Carb with DIO Reed Bog Issue

[Impossworld]

So I got Zeda’s 80cc DIO Reed Valve Kit and this is my second engine that I have bought ever and likely the last as I am going to start saving for a car soon… that being said this final build that I’m shooting for is for performance, reliability, and longevity. I got this kit knowing I was going to do some tuning with the carburetor and what not and prepped myself prior to receiving it by watching as many videos as I could on them and how to jet them. Long story short I get everything set up how it’s supposed to be with some slight tuning to get a good idle, nothing concrete, and I was already starting to notice that it would always bog no matter what if I would press on the throttle too quickly… now I didn’t think much of it as it would still rev up to hell and satisfy me because I was excited with my new engine. Fast forward about a month from getting it and messing around and I have tried every thing to try and get it to not bog and no matter what it will ALWAYS be there wether slight or not, and that’s just from when you press on the throttle too fast, when you have a load on it and your going, at wide open throttle it will die like it doesn’t even have a spark or something… but if your going pretty fast it will do okayyyy but not nowhere close to where I think it should be. I’m running a MZ65 clone and I’m basically right at sea level (26’ or something like that). I will link some pictures of my build incase there is any flaws or anything to fix that I can’t see as I’m still fairly new to this. (I’m running the stock muffler in the pics because it’s night and I don’t want to be annoying) I hope this wasn’t too long to read, I’m just desperate for help and I thought I could come here for it… thank you in advance for any help… it is greatly appreciated.

 

[Chainlube]

What plug are you running? Kit plugs aren't very good.

 

[Impossworld]

What plug are you running? Kit plugs aren't very good.

The one that came with my kit, I’m pretty sure it’s one of those Z8C ones.

 

[Chainlube]

The one that came with my kit, I’m pretty sure it’s one of those Z8C ones.

Change it out for a NGK B6HS or BR6HS.

 

[DAMIEN1307]

The one that came with my kit, I’m pretty sure it’s one of those Z8C ones.

Change it out for a NGK B6HS or BR6HS.

Just for the sake of argument, and it may not be the problem at all, but those Z plugs are Chinese junks...lol.

Change it out with an NGK-BR6HS spark plug instead.

Amazon.com : ngk br6hs

 

[Impossworld]

Thanks for the tip, any recommendations on jets I can put in the carb? I also want to mention that I watched a video on drilling out the small hole in the carburetor to 1.5mm. Never got it to idle again because it think it is too rich now even with a 30 pilot jet.

 

[Chainlube]

Try moving the clip on the jet needle to the top notch.

 

[Juicyjayocean]

You can get jets on Amazon measure the threads the head can be different size as long as the threads are the same also try a power jet bypass plug it up with a vacuum cap heard it makes quite the difference and these oko carbs never idle properly

 

[DieselTech]

Thanks for the tip, any recommendations on jets I can put in the carb? I also want to mention that I watched a video on drilling out the small hole in the carburetor to 1.5mm. Never got it to idle again because it think it is too rich now even with a 30 pilot jet.

Dont drill that hole in your carb. It will ruin your carb. That's a bandaid fix.

 

[exrex0015]

I have the same problem although I did drill out small hole to 1.0mm. I installed biggest jet that came with kit and runs but only have like 1/3 usable throttle.