1995 Merc 115 not firing on the #2 and #4 cylinders

SparkieBoat

Captain
Joined
Aug 17, 2009
Messages
3,643
I just got a 1995 Merc 115 serial number 06072917.
The previous owner put a new switch box on it because he was not getting spark on the #4 cylinder. a DVA test shows #1 208v ,#2 bounces around 54V-85v , #3 207v, #4 bounces around from 11v-25v. they did the same with rectifier disconnected, kill switch wire disconnected at switch box, and connected/disconnected from the coils. switching the coils around makes no difference. DVA with the Blue and Blue/white wires is 212v. all these test are while cranking. While running at idle made no real difference in voltage readings. From what I understand if it is #1&2 cylinders or #3&4 cylinders it could indicate switch box or stator. looks like it has the red stator. I know one of you guys know exactly what I need to check. Thanks in advance for your help.
Sparkie :D
 

Faztbullet

Supreme Mariner
Joined
Mar 2, 2008
Messages
15,931
Re: 1995 Merc 115 not firing on the #2 and #4 cylinders

Check the trigger voltage and wiring as thats the only thing common to 2 & 4. I have also seen the wiring pinched behind the starter from the stator.
 

SparkieBoat

Captain
Joined
Aug 17, 2009
Messages
3,643
Re: 1995 Merc 115 not firing on the #2 and #4 cylinders

I will check the trigger voltage. The wire from the stator are not pinched, but I will double check that just incase I overlooked it. thanks
the correct model # is 0G072917
 

SparkieBoat

Captain
Joined
Aug 17, 2009
Messages
3,643
Re: 1995 Merc 115 not firing on the #2 and #4 cylinders

turned out that the previous owner got the bottom 2 wires backwards on the switch box... all is well now... thanks
 
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