110cc won't start

shad88 · 09-05-2021, 09:34 AM

I did a top end rebuild on a 110cc. Put it back in the frame with a new wiring harness. I have tried starting it with starting fluid, carb. cleaner and gas, but no luck. Has spark. Compression is 180psi. Timing is right on. I have changed the valve clearances. I have swapped out every piece of the wiring harness also. It still won't fire. I finally pulled the plug and shot some carb cleaner in and it actually started. It seems like fuel isn't getting to the plug. Any ideas? Thanks

dirtbkr188 · 09-05-2021, 09:52 AM

The carb needs to be disassembled fully and thoroughly cleaned with carb or contact cleaner and compressed air. Running for a few sconds on carb cleaner is usually indicative of a fuel problem.
Check to make sure the fuel is getting to the carb, and then check to make sure fuel is going through the carb.

shad88 · 09-05-2021, 10:03 AM

I wasn't even running a carb yet. Just putting it right down the intake. That's what's so weird. If the fuel is going directly in, how is it not firing off?

09-05-2021, 09:34 AM	#1
shad88 Join Date: Mar 2021 Location: Boston Posts: 17	110cc won't start I did a top end rebuild on a 110cc. Put it back in the frame with a new wiring harness. I have tried starting it with starting fluid, carb. cleaner and gas, but no luck. Has spark. Compression is 180psi. Timing is right on. I have changed the valve clearances. I have swapped out every piece of the wiring harness also. It still won't fire. I finally pulled the plug and shot some carb cleaner in and it actually started. It seems like fuel isn't getting to the plug. Any ideas? Thanks
	0

09-05-2021, 09:52 AM	#2
dirtbkr188 Join Date: Aug 2009 Posts: 510	The carb needs to be disassembled fully and thoroughly cleaned with carb or contact cleaner and compressed air. Running for a few sconds on carb cleaner is usually indicative of a fuel problem. Check to make sure the fuel is getting to the carb, and then check to make sure fuel is going through the carb.
	0

09-05-2021, 10:03 AM	#3
shad88 Join Date: Mar 2021 Location: Boston Posts: 17	I wasn't even running a carb yet. Just putting it right down the intake. That's what's so weird. If the fuel is going directly in, how is it not firing off?
	0