predator 212 wont idle

[tundrabeagle3]

I have a predator 212 that wont stay idling unless i am on the gas. I have cleaned the carb and still have the same problem . what do you guys think?

 

[shackwrrr]

Either the idle speed screw backed out or there is still dirt in it. Did you pull the pilot jet?

 

[tundrabeagle3]

I shaved the throttle shaft while i was cleaning the carb and today the butterfly came off while i was riding it. So i will need a new carb. i would like something that can give more acceleration and torque than the stock carb. Is this possible with a carb? would a 22 mm mikuni clone carb accomplish this?

 

[shackwrrr]

Bmi karts has bored out stock carbs. They are the best option for mild performance.

 

[tundrabeagle3]

i dont want to spend too much money. i am considering the honda 196cc clone carb because i hear they are bigger than the new predator carbs. or the chinese mikuni 22 mm from ebay, which one would be better for torque and acceleration? this is for my mini bike that i off-road a lot.

 

[shackwrrr]

a bored stock carb is around 55 bucks and will work the best. You will have over 55 in making the mikuni work and tuning it. If you can't afford the 55 then you can get a stock clone carb for 20 bucks, I dont know if the clone carb is bigger than the predator carb.

 

[gumpit]

So the bored BMI carb will go right on a stock engine without any other modifications and increase the HP?

 

[tundrabeagle3]

a bored stock carb is around 55 bucks and will work the best. You will have over 55 in making the mikuni work and tuning it. If you can't afford the 55 then you can get a stock clone carb for 20 bucks, I dont know if the clone carb is bigger than the predator carb.

the chinese mikuni is about $15 on ebay. i was planning on making an adapter if it gives me more power down low than the stock clone carb

4 Cycle Karting Forums - 196 vs. 212 carbureters

 

[shackwrrr]

So the bored BMI carb will go right on a stock engine without any other modifications and increase the HP?

Depending on the rest of the engine it can. Normally any increase on the intake side is coupled with upgrades to the exhaust side.

 

[tundrabeagle3]

today i cleaned the predator 212 engine and carb and put i back together and it still is having the same problem. i cleaned the main jet,e tube, and idle jet on the carb. i jetted the main jet and i am running a intake with stock exhaust. the spark plug is black so the mixture is to rich. could this be why it doesn't idle or rev up smoothly?

 

[tundrabeagle3]

i took off the idle screw cap and took out the idle screw and put it back in . i left about 3 turns in and this allowed the motor to rev up much more smoothly. i also made some gaskets for the carb plate . it still doesn't idle any ideas ?:shrug:

 

[redgokart]

you mean the pilot screw right? what about the pilot jet? you probably just need to bump that up a size.

 

[tundrabeagle3]

yes the pilot screw

 

[minibikeman1180]

theres probably a vaccum leak

 

[tundrabeagle3]

I put lithium grease on the gaskets . Does advancing the timing or running a 14 cc head require more gas (jetting)?

 

[tundrabeagle3]

I finally got it to idle.:drinkup:

I made a bigger gasket for the carb, and reset the valve lash.