So after countless trips to the lake last season only to find the check valve coming out of the gas tank would randomly stick ending my day. I thought I finally had a strong running boat. Took it out for the first time this season and after burning off a quarter tank or so, Its dies. If I pumped the carb it would kinda start. I pulled the fuel filter/separator and there was white fluid(assuming thats water). No big deal, got rid of the water, was able to get it to idle for a minute at a time a couple times. pulled the filter back off and the filter was still dry. So I bypassed the filter and ran the line directly from the tank to the pump.got it to idle for prob 5 minutes then it Ran great the rest of the day, ZERO problems. Do the mechanical pumps only create enough suction to pull gas out of the tank at higher rpm? Im thinking about adding a low pressure inline electric pump either in between the filter and pump or between the tank and filter to feed the mechanical pump. The mechanical pump is NEW. has about 4 hours on it. OEM carter pump. I know mechanical pumps are usually very reliable just dont think they pull gas that well. Motor is an 86 merc 470.
