Quote:

Quote:

There are two T fittings on our carbs. The second,lower one is a vent. If the vent hose is pinched or obstructed it can cause the carb to flood, especially if the choke is out. I accidently pinched that hose on mine when I removed the airbox and my bike would not run with the choke out but would with it in. When I went over my work I noticed the pinched hose and rerouted it so that it was not pinched and my bike ran fine. It sounded a lot like the symptoms that you describe. Some have even removed the hose all together and allow the carb to vent at the "T" fitting. What you describe sounds like the carb is flooding when the choke is pulled out. As your issue was present with both CDIs the problem is almost certainly with the carb.



If the vent is blocked just the opposite would happen. Air could not escape the bowl preventing fuel from entering so the engine would starve for fuel.


You are probably right, Ian. Either way I know first hand that a pinched vent tube is no bueno and produces the symtpoms that he described.

2006 865 Neon Blue/Jet Black Speedmaster,790cams, TTP Stage 2 Firestarter, Epco Exhaust with 10.25" Samson Vrod baffles, UNI pods with 40 pilots, 150 mains,Thruxton needles, 3 turns out.