Zooma 33cc carb issue

[debaugh]

I got a free zooma 33cc go cart and I thought the card lines were switched. I switched them and I can get it started but it wont stay running for more than 10 seconds or so. Carb help please.

 

[jasonH]

The easiest thing to check fuel supply. Starting at the tank lines and working your way to the carb making sure it's getting fuel. Check the spark. Clean the carb with a soak kit. Pics would help too.

 

[jasonH]

Do you have to premix your gas? I'm not familiar with a zooma 33cc but have some experience rebuilding free toys.

 

[debaugh]

Here is a pic of the carb. Which connection is the fuel line and which is the fuel vent?

 

[OzFab]

Place a finger over each of the nipples & press the primer bulb, one will suck, one will blow; whichever one sucks is the fuel line from the tank; the one that blows is the return...

 

[jasonH]

What fabroman said

 

[debaugh]

Then I was right. They were backwards when I got it. I can start it but when I give it throttle it revs up then dies about 10 seconds later. Then I can see air in the gas line. Gas does not stay up to the carb.

 

[jasonH]

Chances are if you suspect you have air in your fuel line, it is because your fuel flow is obstructed by debris in the tank, in the line, in the shutoff valve, or in the carburator. To eliminate, disconnect your fuel line from the carb and see if you get fuel leaking. If you do, the obstruction is in the carb. If no fuel comes out, clean out the tank and replace the line with standard fuel line from the parts store (like 50 cents a foot or less)

 

[OzFab]

I had that exact scenario just a few days ago, turns out there was a small hole in the pick up line, replacing the hose fixed the issue (but, I think I got lucky)...

The biggest problem with these type of engines is the small black rubber hose is not impervious to fuel & do break down; they should be replaced every few years...

There should also be a small filter on the end of the pick up hose, inside the tank