Coil check

mayorj1227

Seaman Apprentice
Joined
Feb 14, 2022
Messages
40
Ck coils on my 25hp evinrude, secondary great primary reading 03.5. Doesn't it supposed to be .03 to .15
 

Crosbyman

Vice Admiral
Joined
Nov 5, 2006
Messages
5,522
a few ohms ...3.5 ..ohms I presume seems a bit high but indicates continuity is ok

is the coil causing issues ?? points and condensers are usually more suspects with the readings you have

btw indicate coil type engine model year etc...
 

mayorj1227

Seaman Apprentice
Joined
Feb 14, 2022
Messages
40
a few ohms ...3.5 ..ohms I presume seems a bit high but indicates continuity is ok

is the coil causing issues ?? points and condensers are usually more suspects with the readings you have

btw indicate coil type engine model year etc...
86 with cdi
 

Crosbyman

Vice Admiral
Joined
Nov 5, 2006
Messages
5,522
I belieive those square coils are a couple hundred ohms HV and a few LV side ....
check utubes or experts will chime in .

i guess points are no longer the issue :)
 

racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
38,071
Instead of guessing that coils are the issue , what trouble shooting was done ?-----What is your motor doing / not doing ?
 

mayorj1227

Seaman Apprentice
Joined
Feb 14, 2022
Messages
40
Hard to start, spark plugs showing weak spark...runs and dies and bucks and kicks likes a mule. Don't say carb. System been thru
.
 

racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
38,071
----Sparkplugs are a poor way to check spark.---Answer this question.-----Does spark jump a gap of 3/8"on a simple test device ?
 
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