voltage help

Joecef

Cadet
Joined
May 14, 2018
Messages
20
Hey, guys having a non starting issue. I have a 1989 2.3 omc, what happenes here is my boat sat for a month, went to go start it and she was dead. So I put the battery charger on it (built in) and came back out about a hour later and went to start itand still dead. checked the battery and noticed that the battery had swelled up and leaked everywhere. So I replaced the battery, cleaned everything up and she cranked and no start. so I check spark, no spark. checked the coil, thought maybe fried the coil. Replaced the coil still nothing. Decided to do a complete tune up cap rotor condenser points plugs. Replaced it all. Went to fire her up, still no start, no spark. checked wiring to coil all seemed okay. But did notice with key off I have 12 volts at coil...... shoudnt be there.

My question I guess would be, could my battery have been shorted out from the alt? I cleaned all ground and the feed wires, so I know its not a power or ground short or open. I removed the main rubber connector cleaned any corrosion or gunk that had collected over the years. I also checked the kill switch and it was operating as designed.

Any help at this point would be great

Thanks in advance
 

alldodge

Moderator
Staff member
Joined
Mar 8, 2009
Messages
42,957
When your turn the key ON do you have 12V on the positive side of the coil?

Disconnect the gray wire on negative side of the coil going to the tachometer if you have one

OMC Engine Wiring.jpg
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,241
But did notice with key off I have 12 volts at coil...... shoudnt be there.

Ayuh,..... Welcome Aboard,..... Yer Right, shouldn't be power there with the key Off,......

Work backwards, 'n see where the power is comin' from,......

How many wires ya got on the coil's (+) terminal,..??
 

Joecef

Cadet
Joined
May 14, 2018
Messages
20
Ayuh,..... Welcome Aboard,..... Yer Right, shouldn't be power there with the key Off,......

Work backwards, 'n see where the power is comin' from,......

How many wires ya got on the coil's (+) terminal,..??

Thank you sir,

I found it late last night. Someone installed a second resistor in line. for some reason the 2nd resistor was supplying my ignition with a constant 12v. I disconnected the second resistor and started to get spark. removed it cranked her over and
fired up and ran better then she has ever. Very strange, but on my coil I had three wires on + and 3 one -
 

Joecef

Cadet
Joined
May 14, 2018
Messages
20
When your turn the key ON do you have 12V on the positive side of the coil?

Disconnect the gray wire on negative side of the coil going to the tachometer if you have one




I did all that checked everything I was bashing my head against the wall. I was ready to bring my boat into the shop. I am a licensed tech so I kinda get whats going on. So that would have killed me haha. But im thankful for this forum. :)
 
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