Re: 86 omc cobra,140 gmc - impeller pieces and flapper
The flapper is in the exhaust pipe just after the motor. You need to raise the motor, or remove the cast iron exhaust elbow to change the flapper. With the latter, you'd just need a new flapper and elbow gasket. Fairly easy if the bolts don't snap on you. I doubt your 4-banger has an oil cooler. If it has power steering (not common on those) it will...for the power steering fluid. As far as collecting any impeller fragments, drain the block and exhaust manifold of water. Also pull the thermostat. Fragments like to collect in these places.
when i replaced my impeller the other day the guy said at the marina, old torn off pieces would be all in the oilcooler...where in the hell is the cooler? Oh; one more thing how hard is it to change or inspect the flapper/<br />thanks a lot.joe
