New guy needs help!

[theduder]

Hi, I just bought a used 4tec with a .15 I'm new to nitro and everything seems to be fine other than when inlet hose is connected to carb it's like there's no back pressure to move fuel when I try to prime it. I did undo the hose from the carb and hit the button and gas comes. put it back on and no fuel moves? Since I just bought it and the guy said that it hasn't ran in a while I put everything back to break-in configuration. Must be something easy but need help. Thanks.

 

[Metalhead Matt]

Crank it with your finger over the exhaust. Be careful not to flood it. Watch the fuel come up the line. Stop when fuel reaches the carb.

 

[theduder]

i have held my finger over exhaust to prime, still no fuel moves. i do know that the exhaust it's self has no leaks. when i do hold my finger on it i do see the fuel ripple from the exhaust coming through. but when i tried troubleshooting by taking off the line to carb i held my finger over the exhaust and started it and fuel came through entire fuel line. i put it back on the carb and the fuel that did get through started the car right up, but no more fuel moves to carb from the fuel tank?

 

[Rolex]

It's used and probably it's been sitting. It sounds like the carb needles are gummed up with old dry fuel.