dear sifu, i left my car 5 days due to balik kampung to visit gandpa...today morning i start the engine, the engine starts, but stall within 2 second..i start the second time then it starts and run well...issit due to unsufficient fuel flow? it nv happen bfr while i using stock carb...this carb makes my engine not easy to start...expecially when hot...need to crank more compare to stock one..the tunning all correct..issit due to inssuficient fuel or pressure supply by eom pump ?