Powerpack keeps burning out ?

[megclay]

Evinrude 70 hp 1977<br /><br />After rebuilding carbs, waterpump, fuelpump, fuelhoses, mainseal, checked compression ok<br />It ran fine for a year than the powerpack failed<br />got a used one it lasted for about year<br />got another used one it lasted about 6 months.<br />Just got a new powerpack and Rectifier it did not work at all.<br /><br />The boat will rev. up fine under no load<br />but as soon as you put load on it (put it in the water)<br /><br />It will only idle and the more throttle I give it<br />it sounds and acts like it is flooded<br />will not rev. up<br />(only when in neutral it will rev up fine)<br /><br />also checked for rev. voltage short going back to the powerpack from the key none was detected (black/yellow wire)<br /><br />help ?<br />megclay

 

[REELSPORT]

Re: Powerpack keeps burning out ?

welcome to iboats. you might want to check to see if there is some broken insulation going to or from your powerpack since it keeps shorting them out. I am not familar with this engine so this post will get it back to the top where people who do know will see it. good luck

 

[Walker]

Re: Powerpack keeps burning out ?

Make sure your battery cables are tight. If your battery has wing nut either replace them with standard nuts or tighten them real tight with pliers.<br />Ypur power in gear problem sounds like your carbs need a good cleaning.

 

[megclay]

Re: Powerpack keeps burning out ?

checked all the wires when I installed the new<br />powerpack I will recheck tonight

 

[megclay]

Re: Powerpack keeps burning out ?

walker<br />thanks<br />Will a lose battry connection cause this.<br /><br />If it can rev up fine in neutral do the carbs need cleaning ?<br />megclay

 

[Walker]

Re: Powerpack keeps burning out ?

Loose battery connections can play heck with the entire electrical system of that motor. And yes, a motor can rev in neutral with bad carbs. There is no load on the motor except its own internals.

 

[Joe Reeves]

Re: Powerpack keeps burning out ?

Frequent powerpack failure can be caused by the slightest amount of voltage being applied to the black/yellow wire at the pack..... the SMALLEST amount of voltage!<br /><br />Disconnect that wire at the powerpack, then hook up a volt meter to it. With the key in the ON position, there should be no voltage at that point at all.<br /><br />Should voltage exist, disconnect that same black/yellow wire at the ignition switch. If the voltage ceases to exist, replace the ignition switch.

 

[megclay]

Re: Powerpack keeps burning out ?

joe<br />checked that no voltage<br />would a bad stator burn out the powerpack ?