have sw cooled 5.7 with new im
have sw cooled 5.7 with new impeller.completely removed rusty thermostat.cleared out all coolant lines of broken impeller parts.can blow air from outdrive up to impeller pump.motor hits 220 degrees quickly.checked all hoses and clamps.intake tube on transom looks good.not getting good flow thru pump.with outdrive submerged in water tank appears to be no water pickup.tried priming pump and hoses and got a brief splash of water.does this require closed thermostat to create pressure for impeller system or is there possibly a deeper problem.never had any overheating issues except the seasonal impeller breakup.please advise.it is 96 degrees and my boat is in the driveway.what a waste.}}}}
have sw cooled 5.7 with new impeller.completely removed rusty thermostat.cleared out all coolant lines of broken impeller parts.can blow air from outdrive up to impeller pump.motor hits 220 degrees quickly.checked all hoses and clamps.intake tube on transom looks good.not getting good flow thru pump.with outdrive submerged in water tank appears to be no water pickup.tried priming pump and hoses and got a brief splash of water.does this require closed thermostat to create pressure for impeller system or is there possibly a deeper problem.never had any overheating issues except the seasonal impeller breakup.please advise.it is 96 degrees and my boat is in the driveway.what a waste.}}}}