1972 85 hp Evinrude Firing Problems

jdubb1000

Cadet
Joined
Oct 6, 2001
Messages
11
This motor will crank up and idle fine but dies when you give it the throttle under load. Its got clean carbs, gas, and points adjusted. Its timed correctly and has good compression. I've been told that it is the amplifier. Being that these things are so expensive, is there any way to rig up a new system, sort of bypass this amplifier?
 

petryshyn

Commander
Joined
Oct 3, 2001
Messages
2,851
Re: 1972 85 hp Evinrude Firing Problems

You're right it could be ignition or ...fuel. Try enriching the idle adjustment(back them out 1/2 turn)If this doesn't help check for spark with a spark-gap tester. How far will it jump and what color is it?(bluish white or reddish)....Good luck
 
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