New carb with weird issue.......

[MSRacing89]

It is a 440 with a new stage 5 750 built by BIGS. Well built carb and a nice running but there is something happening that I have not witnessed before. Maybe someone can help shed some light.

After a good run with heat in the motor, while the engine is shut off, fuel begins to spit every few seconds out of the "shooters" for a period of time I would say 10 minutes or so. Now the float levels are all set the checks/needles are in the shooter ports. The fuel lines are insulated, and the carb feels cool even after it sits when the engine is shut down.

I have even witnessed it spit out the shooters while it was running, even after taking all the tension off the accelerator pump arms. I am lost at this point. Is it the winter fuel? I was thinking it was not venting properly, but it never drips out the the boosters.

Do I need to send the carb back to be looked at?

[firefighter3931]

I would send it back. 

If you have another carb you can swap on i would try that first and see if the same conditions exist before sending it back....try isolating the problem. 


Ron