Took my car back out again today, and recreated the same problem. This time, I had filled up the tank, and got the same problem. So filling the tank with cool fuel fresh from the pump doesn't solve the issue. Now, I've had this same problem since before I installed the spring inside of the fuel pump pick-up hose. The only difference is that since installing the spring, I'm able to maintain accelleration. Although, I am al for excluding both the spring, and the pick up hose all together to avoid these potential problems. However, here is an interesting fact. I disconnected the vacuum hose from between the carbon canister, and the intake manifold. I clamped the manifold hose, and then connected a vacuum hose to the canister. Engine started, and idled fine. When I applied the vacuum, nothing happened. Until I increased pressure up to 12 PSI. Once this happened, the engine flooded out from the vapor pressure from the gas tank!. After this, I was able to get the same results @ about 5-6 PSI. Once I applied the vacuum, it would slowly decrease until it reached 3 PSI. Are these normal pressures for the diaphram inside to activate at? It seems to me that the diaphram is malfunctioning, and is the cause of the swelling of my fuel tank. If it was properly "draining" the gas vapors out, I don't believe that the motor would have flooded. If nothing else, I need to replace both the canister, and the hose(s). Can excess pressure in the tank cause a noisy pump? My gut feeling is that it's what's responsable for my fuel vapors inside of my passenger compartment. Although I still intend to shield the tank from the water pipes below. Thank you for all of the input so far both on, and off the list. I do appriciate it! -Robert vin 6585 "X"