1986 90 hp johnson ....are these parts toast?

roonie

Petty Officer 2nd Class
Joined
Jun 5, 2011
Messages
165
Ive had this rebuilt .30 over for a few yrs but light use every year.
Compression is perfect #120 x4.
Although this engine was bored .30 over,there are signs that the engine got very hot before the rebuild as the previous owner stated.
One day it'll run great all day...next day runs like a bad electrical short....I found these ...the trigger has a couple cracks as does the stator. That electrical component/module looks to be heated?
 

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racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
38,743
Trouble shoot with a timing light.-----Hook it up to #1 and test run.-----Observe the flashing light when motor falters.-----Repeat with 2 , 3 , 4 as needed.-----Then again it could be a plug wire shorting to the cowling too.------I can not touch / hear your motor.----So the testing is up to you.
 
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