power pack

[302]

i have 96 evinrude ocean pro 150 prior to purchase stator had failed and was replaced. shortly there after the power pack failed and was replaced. ran fine for a while then won't turn off problrm traced to kill switch wire pulled to tight. (engine was run for a while with this condition). engine ran great the tried to start after being idle for a week it was very hard to start then ran rough also when cranking the starter would stop cranking. changed plugs and then got no spark to plug. mechanic says power pack and also to replace stator both of which i'm purchasing from this site. my question is there something that could cause engine to eat up power packs as this is getting fustrating as this power pack is just over a year old with occasional use.thank you for any responses

 

[Tom Scully]

Re: power pack

The symptoms you mention all have one point in common, the ignition switch. They can build up corrision inside of them which can allow a voltage to be applied to the black/yellow kill switch wire. Any voltage applied to this wire can damage the power pack.<br />Measure the resistance between the "B",(battery), terminal and the "M" terminals, with the wires disconnected, the resistance should be infinite, no connection at all.<br />Measure the resistance between the "M" terminals with the wires disconnected. With the switch in the off position you should read 0 ohms or close to it. With the switch in the on or run position you should read infinite ohms, no connection at all. I had a recent problem with this circuit which caused hard starting and rough running and eventually no spark. I found that I had 2200 to 2500 ohms of resistance between the "m" terminals of the ignition switch.<br />The starter not cranking can also be caused by the ignition switch having excess resistance between the "B" terminal and the "S" terminal. The resistance between these terminals with the key in the start position should be 0.<br />Note: Turn the battery switch off or disconnect the positive battery terminal prior to testing.<br />Hope this helps.

 

[302]

Re: power pack

thanks for your response tom. I failed to mention that I had replaced the ignition switch when i had problem with kill switch wire. i'm not very knowledgable about outboards but i will run your idea by my mechanic, he should have the meter to test with. from what i have read about power packs they are very sensitive to errant to current. when i had problem with engine not turning off i suspect that may have damaged the pack, i continued to use the boat till the mechanic had time to get to it.