Cup the Air Intake and it will run

[uparms]

I have a Helix 150, Will not start. If I cup and throttle with my hand the air intake hose and put resistance on it, it will start and run.

3 years ago had a new fuel petcock valve ( 1 line to fuel and 1 line for vacuum activation).

Buggy only has 30 hours of kid time on 1 acre yard and a few neighborhood short runs. I have thrashed it a few times in the yard.

Hate to swap a carb if that is not needed.

Buggy is 4-5 years old. Garage kept.

I have inspected hoses. I have torqued manifold down. I have installed a new choke. Tightend and reseated air cleaner to carb. Inspected vacum pump.

Does anyone have a vacuum hose diagram??

I want to buy new gaskets for manifold.

Should I put real clamps on each hose??

What would you do?

Any advise appreciated. I hope Delaware snow is coming.

Thanks,

Uparms!

[liduno]

Sounds like you aren't getting enough gas. Clogged jet maybe?

[x-bird]

Check the valves, probably need reset.

[OLDKID]

You didn't mention if it's been sitting any great length of time as in bad gas . I've had fuel problem's in as little as 60 day's . When carb. Cleaning a lot of folk's neglect the pilot jet !!!! - not just the oriface , but the removeable tube with the series of tiny holes is prone to plugging . As far as new choke there is also a ballast resistor plus the wireing to question .there is info on this sight to visiually check and measure choke operation .