Engine running hard won't accelerate keeps bogging

[loadingup80]

My engine sounds rough and it won't accelerate at all. Anytime I try to accelerate it boggs out. It gets up to 10mph and it seizes. The engine will keep running at idle but won't deliver past 10 mph. I have a small 50cc engine on the bike. I honestly don't know much of what I'm doing but I'm trying to figure this out please help.

 

[Wrench]

Is this a new engine if so it's probably just a carb needle clip position adjustment

 

[loadingup80]

Is this a new engine if so it's probably just a carb needle clip position adjustment

It's a new engine yes.

 

[DAMIEN1307]

It's a new engine yes.

Greetings to you in Rumford, I used to live not far from you on the seacoast of New Hampshire before I retired and moved to Alamogordo NM back in 2011.

What is your elevtion above sea level so I can help you correct the needle valve setting on your carburetor???...lol.

 

[GW's Motorized]

Greetings to you in Rumford, I used to live not far from you on the seacoast of New Hampshire before I retired and moved to Alamogordo NM back in 2011.

What is your elevtion ablove sea level so I can help you correct the needle valve setting on your carburetor???...lol.

Shouldn't you know if you lived near him?

 

[DAMIEN1307]

Shouldn't you know if you lived near him?

In Maine, the elevations are all over the place...lol.

 

[loadingup80]

Shouldn't you know if you lived near h

Greetings to you in Rumford, I used to live not far from you on the seacoast of New Hampshire before I retired and moved to Alamogordo NM back in 2011.

What is your elevtion ablove sea level so I can help you correct the needle valve setting on your carburetor???...lol.

I don't know the elevation. I'm sure it can be googled. Also are you serious haha. I don't know much about this but if I'm told what to do can do it

 

[DAMIEN1307]

elevation of Rumford, Maine, 2,133 feet (650 m), and Rumford Whitecap, elevation 2,197 feet

 

[DAMIEN1307]

With that elevation in mind as well as the higher than usual humidty levels in the summertime...I would be setting that needle valve either in the middle of the needle or one notch above the middle...There are 5 notch's or grooves to clip the C clip into.

Let me know where it is set at this moment.

 

[GW's Motorized]

With that elevation in mind as well as the higher than usual humidty levels in the summertime...I would be setting that needle valve either in the middle of the needle or one notch above the middle...There are 5 notch's or grooves to clip the C clip into.

Let me know where it is set at this moment.

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It also depends on if he's running a stock air filter. I live at 2000ft and mine was perfect in the center until I swapped to a less restrictive filter