I left my 7.5 mercury out in the rain without the hood on. The engine is a 1972. When I took my boat out the motor took a long time to start. When I got the engine running it would cough and sputter at low rpms. At high rpm the coughing ceased. <br /> The motor has also lost about 75% of its power.<br />It sound sounds great at high rpms, but doesnt have any power. With the throtle half off the motor coughs, at low rpms it will cough and eventually die. <br />Any suggestions. thanks
