Hey all...

I have a 50cc that I picked up for my son. I got it running and seemed to respond well. Put it in the frame and hooked everything up and started it. Under a load it will bog down and not accelerate and if I push throttle to fast it will bog down and die. I have put a carb from another one that is running well and did the same. Purchased a new carb and intake, same issue. For the life of me I can figure out why it bogs down this way. I also put in a new NKG plug, new working CDI and new coil with a new exhaust, nothing changes........ ANY HELP PLEASE

 

also compression was around 120

 

2 stroke or 4?
Name of quad?

 

It is a 4 stroke, no clue on brand, Chinese

 

Does anyone have any ideas?

 

I'm not a 4 stroke guy. If I had to guess, maybe valve lash adjustment?
Try installing another wire from frame to motor. Sometimes the motor doesn't ground.

 

yea good point ill check the grounds. And valve lash was just done...

 

I'm betting on the ground. Happened to me before so I always put a extra ground on.

 

Still didnt help lol I feel as if I have tried everything except rebuild the darn thing....

 

I took the chain off to see if the "resistance" would be an issue and that didnt help, I was going to look at the clutch but someone told me that that wouldnt help.... how much are the little 2stokes? lol