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Ran fine all day now wonbt start no fire

S

streamer

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"Rebuilt powerhead about a mon

"Rebuilt powerhead about a month ago. Ran fine, compression good and equal. Occasionally had trouble
starting on test runs burning double oil. Figured double oil could be problem. Went ahead rebuilt carbs, replaced all fuel lines and tank line, inspected fuel pump, even changed fuel out completely to rule out fuel issues. Cranked and ran fine the last few hours of double oil ( actually switched to 1 1/2 oil mix toward the end of break in. Went to lake and pulled may son and friends all day 2 tanks worth yesterday only to
have trouble getting it to start about an hour before dark. Acted flooded waited around a while
pulled breather off finally got it started and
had to stop one more time. Could not get started again. Changed plugs, waited, still could not get started. Had to be towed back in the dark.
I had noticed that tachometer had not worked one time during day but next start up after picking up a tuber tachometer had started working again. Left alone over night would not start this morning. Came home. Pulled plugs this evening and left plugged to plug wires and turned over. Has fire
but is not BLUE, is yellow which I know is the wrong color. Is this a power pack gone or something else.
And how can I know for sure. I doubt all 3 coils
would go at the same time but all 3 plugs fired
yellow. Was blue before. I believe that this power pack has been messing with me all along. I did
install a tachometer a few weeks back and it has operated fine. I am pretty certain it is correctly set up. I used this site to get help on
connecting to the correct wire colors. Actually pretty simple.

Thanks"
 
"Check stator under flywheel f

"Check stator under flywheel for leakage. If any portion of it is leaking a substance down on the powerhead, replace stator."
 
Thanks.
I am considering the

Thanks.
I am considering the stator also. I will pull the flywheel and check it. One thing I did find during the rebuild was that the rectifier had black melted
tar that had run down on the side of the block behind it. While I was putting back the wiring I noticed that one particular screw and terminal had
corroded. I do not know whether the rectifier had heated up the terminal or the terminal cased the
rectifer to melt. The motor still cranked and ran
with the melted rectifer. I rebuilt due to low compression on top cylinder.

Thanks.
 
I assume fubar means gone. I d

I assume fubar means gone. I did for the heck of it
change the plugs and motor cranked fine. I have good blue fire from plugs to power head. Tested by
backing plugs out and laying on power head to ground. Is it possible that after heating up the
power pack fails or could I have gotten lucky with
a plug change out?
 
"I have a 1979 Evinrude 100HP

"I have a 1979 Evinrude 100HP starflite outboard motor, it currently has NO SPARK AT ALL. Where in the world do I start without replacing everything under the cover??? I am NOT mechanically inclined, but am NOT stupid either. Any help witht his would be greatly appreciated. Currently it is in Northern Michigan in storage at brothers place, but will be making trips up to work on during the winter months. Before the NO SPARK situation, I had it running fine on land with the muffs on, then next day I put it in the water and nothing. I am very confused NOW. I replaced the plugs, 3 of the 4 were severly fouled. Any ideas?"
 
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