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1972 evinrude 100 hp wonbt start

D

dave

Contributing Member
i have a 1972 evinrude 100hp

i have a 1972 evinrude 100hp turns over good
but has no spark i was told to changee pulse packs but these $300.to $400.dollars is there anything i can check first . the fuse is good .
it is getting fuel .is there a way to check the power pack or do you need special tools.
help!!!!! thanks dave
 
Disconnect the red power plug

Disconnect the red power plug to your engine then use a jumper lead to your solinoid and turn it over and see if you have spark...
Gary G
 
"Gary.... That test doen't

"Gary.... That test doen't apply to that engine as the powerpack depends on a 12 volt source in order to function.

------------------

Dave......
(Battery Capacitance Dischage Powerpack Test)
Various OMC Engines - 1968 to 1972)
(J. Reeves)

Purchase a small 12v bulb at your local automotive parts store (the 12v bulb is to look like a flashlight bulb, not a headlight bulb). Solder two wires to that bulb, one to the side of the bulb (ground), and the other to the positive point.

Remove the spark plugs. With the key in the on position, make sure that you have 12v going to the pack at the terminal block (purple wire). Now, connect the ground wire from the bulb to any powerhead ground. Connect the wire from the positive point of that bulb to the powerpack wire that is connected to the coil wire on the terminal board (blue wire).

Crank the engine and observe that bulb closely (CLOSELY!). If that bulb glows even the slightest bit, the powerpack is okay. It may be a very dim glow... just so it glows! If it doesn't glow, the pack has failed.

Keep in mind, that type powerpack (Battery Capacitance Discharge) demands a top notch battery of at least 70 amp hours. Any less will, in time, cause powerpack failure.

Joe
"
 
Is there a "clipper"

Is there a "clipper" unit on the motor??It is a small electronic box mounted at the back of the motor.
 
" j.reeves thank you!!!! i wil

" j.reeves thank you!!!! i will check it out tomarrow
thanks for all the help, realy appreciate you guys
helping out . sparky i will check and get back with you tomarow
thanks dave "
 
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