Engine dies at half throttle

[shakeyone1]

I have a new SCZ 29cc motor with an 1107 carb. It starts and idles just fine but when I try to take it past half throttle it will die. If I release it quickly it will continue running. It's just fine until I reach a certain throttle position.
Any Ideas?

 

[DougStar]

Reset you hs1-7/8 and ls1-3/8 needles
Coz that sounds like tune issue

 

[crucialRC]

+1 Sounds too rich

 

[Basher5iveT420]

Make sure your throttle linkage is set up properly, if you can adjust the end points on your remote I recommend you do it also.

Then TUNE the carb, if it runs fine till half throttle currently, Just play with the H screw on the carb.

Remember to let the engine warm up, and make very very small adjustments at a time.

 

[voo2doo]

I've had bogging like that and it was down to a warped isolator block. Check for air leaks too.
J

 

[Phill2]

I have a new SCZ 29cc motor with an 1107 carb. It starts and idles just fine but when I try to take it past half throttle it will die. If I release it quickly it will continue running. It's just fine until I reach a certain throttle position.
Any Ideas?

I had the same problem with an 1107 on a 29cc.
Changed to a 668 and it never happened again.
I think the 1107 is just too much carby for a 29cc and it keeps bogging it.

 

[DougStar]

I had the same problem with an 1107 on a 29cc.
Changed to a 668 and it never happened again.
I think the 1107 is just too much carby for a 29cc and it keeps bogging it.

I have the 668 on my zen 26 it's a great carb??

 

[shakeyone1]

Thanks for the info guys. I will check everything

 

[Polar_Bus]

I have a new SCZ 29cc motor with an 1107 carb. It starts and idles just fine but when I try to take it past half throttle it will die. If I release it quickly it will continue running. It's just fine until I reach a certain throttle position.
Any Ideas?

The first step you need to do is figure out weather your high speed circut is too rich or too lean. Generally speaking if attempting full throttle you observe sputtering and it abruptly dies thats too lean. If your too rich you will observe limited rpm's the engine exhaust tone will sound deep and burbly. Listening to the exhaust tone gives you clues as to what the issue is.

 

[Phill2]

The first step you need to do is figure out weather your high speed circut is too rich or too lean. Generally speaking if attempting full throttle you observe sputtering and it abruptly dies thats too lean. If your too rich you will observe limited rpm's the engine exhaust tone will sound deep and burbly. Listening to the exhaust tone gives you clues as to what the issue is.

Mine bogged no matter how much I leaned it.

 

[Freddy boy]

I have same trouble..zen 26cc engine dies at half throttle ..otherwise ok..
Thinking to change engine
Had enough of it

 

[Rceverywhere]

Sure it's just out of tune, try opening the high speed needle, maybe carb is got gummed up or blocked. Fuel line kinked, blocked or cracked. Air filter blocked of over oiled? Don't give up on it if it can run and idle, just sit back, have a refreshment of you choice, start back to the basics, base settings, gasket leaks. When you figure it out it will be rewarding. Make sure to have lots of refreshments and take a break often, make sure your at home if alcohol is in your refreshment. Lol
The breaks will give you a chance to think...or get to the point of falling down drunk. Lol