1979 115 Mercury

[Robert Caswell]

When i give it full trottle to plain out all it does is idle, but if i keep trying it are after the motor warms up it will plain out. The last time i used the motor i had to jump start it. I was told that if the battery was low it would affect the power pack is this true. Can you please respond. Thanks Robbie

 

[The Marine Doctor]

Re: 1979 115 Mercury

When an engine is cool it needs more fuel...when an engine is warm it needs less fuel.<br /><br />Soooo.<br /><br />We can safely assume that you need to open the low speed jets to get the best of both worlds.<br /><br />Also...do NOT jump the battery to run the engine. The ignition could fail as you will not have the proper voltage when the jumper battery is taken off.<br /><br />TMD