Hello
I have a buddy that bought my boat with a 2.5 mercruiser 1987 and now when he tries to start it, he says it just backfires out the carb and there is exhaust coming out the cooling lines. When I winterized the engine I took out the drain in the bottom of the block, and the drain in the bottom of the manifold with the nose of the boat slightly raised. I then disconnected the hose at the top of the thermostat and put a little antifreeze to flush out the water, just in case. What is going on with this troublesome engine again?
I have a buddy that bought my boat with a 2.5 mercruiser 1987 and now when he tries to start it, he says it just backfires out the carb and there is exhaust coming out the cooling lines. When I winterized the engine I took out the drain in the bottom of the block, and the drain in the bottom of the manifold with the nose of the boat slightly raised. I then disconnected the hose at the top of the thermostat and put a little antifreeze to flush out the water, just in case. What is going on with this troublesome engine again?