80 johnson 85 v4 no fire on left side.

tashasdaddy

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Re: 80 johnson 85 v4 no fire on left side.

C &P this without the " there are 6 pages of electrical testing, there for the j/e engines.
"http://www.boatpartstore.com/page28.asp"
 

emdsapmgr

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Re: 80 johnson 85 v4 no fire on left side.

Try swapping the power packs and see if the problem moves to the other side.
 

mikesea

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Oct 1, 2006
Messages
1,830
Re: 80 johnson 85 v4 no fire on left side.

try disconnecting the blk/yel wire,at the bad powerpack,its the kill circut,if you get spark,you could have a pinched kill wire,bad key switch,bad harness
 

Plum-Crazy

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Mar 4, 2007
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Re: 80 johnson 85 v4 no fire on left side.

try disconnecting the blk/yel wire,at the bad powerpack,its the kill circut,if you get spark,you could have a pinched kill wire,bad key switch,bad harness

Tried and still nothing..
 

77Lark

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Jul 24, 2007
Messages
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Re: 80 johnson 85 v4 no fire on left side.

Does it have a stator or points?
 

ezeke

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Sep 19, 2003
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Re: 80 johnson 85 v4 no fire on left side.

How fast is the engine cranking when you get no power to the power packs? Is the battery fully charged?
 

Plum-Crazy

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Mar 4, 2007
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Re: 80 johnson 85 v4 no fire on left side.

update..
Changed the stator and the timing plate underneath and still nothing.. I am stumped what else could it be?
 

Darren418

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May 1, 2006
Messages
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Re: 80 johnson 85 v4 no fire on left side.

Try testing charge coil and check to make sure all electrical connections on engine are good especialy grounds.
 

77Lark

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Jul 24, 2007
Messages
54
Re: 80 johnson 85 v4 no fire on left side.

I've heard some stuff about an air gap sensor. Don't really know anything about it but I saw some troubleshooting directions that listed that part.

All grounds are good?

How are you testing for power on the power pack? What makes you think you're getting no voltage there?
 

Plum-Crazy

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Mar 4, 2007
Messages
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Re: 80 johnson 85 v4 no fire on left side.

where are the grounds located.. I checked and cleaned all I could see.. but they didn't make a difference..
 

HighTrim

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Jun 21, 2007
Messages
10,486
Re: 80 johnson 85 v4 no fire on left side.

You say that you are getting no fire on left (port i presume if you're looking at the motor from the rear). Do you mean by this that your starboard PP is getting power?? If so check the port sensor coil, PP , ignition coil and charge coil. Usually 1 of those 4 will cause no spark on 2 cylinders .
 

Plum-Crazy

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Re: 80 johnson 85 v4 no fire on left side.

You say that you are getting no fire on left (port i presume if you're looking at the motor from the rear). Do you mean by this that your starboard PP is getting power?? If so check the port sensor coil, PP , ignition coil and charge coil. Usually 1 of those 4 will cause no spark on 2 cylinders .

where is the sensor coil?
 

HighTrim

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Messages
10,486
Re: 80 johnson 85 v4 no fire on left side.

They are potted in the timer base. DO you have a factory manual?? The charge coil is though the power source for the power pack. I might start there. What typically happens to a charge coil (if it doesn't just open up - max resistance) is that a few turns get shorted to each other through the varnish coating. This has the effect of removing some turns. Fewer turns means less inductance which means a lower output. Lastly, temperature can play another role besides changing the resistance a little. When the coil heats up or cools down, there is expansion and contraction which can cause turns to short only when hot or only when cold. Even a DVA test can miss this problem.

The numbers vary for charge coil tests, that is why i ask if you have a manual. I know my coils should show a resistance reading of 270 ohms + or - 50 ohms, but yours may be different.Try though disconnecting charge coil leads from power pack, connect ohmmeter on hi ohms scale between either charge coil lead and ground on starboard side. Infinity reading indicates good charge coil. Any or zero reading indicates leads or charge coil is shorted to ground. Then check for frayed or broken leads.

So, when a charge coil measures questionably against known good specs with a known good meter, you may as well change it. The important parts of that statement is known good specs with a known good meter. Molaker taught me alot about this today, hopefully he can add some input.
 

Plum-Crazy

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Joined
Mar 4, 2007
Messages
14
Re: 80 johnson 85 v4 no fire on left side.

They are potted in the timer base. DO you have a factory manual?? The charge coil is though the power source for the power pack. I might start there. What typically happens to a charge coil (if it doesn't just open up - max resistance) is that a few turns get shorted to each other through the varnish coating. This has the effect of removing some turns. Fewer turns means less inductance which means a lower output. Lastly, temperature can play another role besides changing the resistance a little. When the coil heats up or cools down, there is expansion and contraction which can cause turns to short only when hot or only when cold. Even a DVA test can miss this problem.

The numbers vary for charge coil tests, that is why i ask if you have a manual. I know my coils should show a resistance reading of 270 ohms + or - 50 ohms, but yours may be different.Try though disconnecting charge coil leads from power pack, connect ohmmeter on hi ohms scale between either charge coil lead and ground on starboard side. Infinity reading indicates good charge coil. Any or zero reading indicates leads or charge coil is shorted to ground. Then check for frayed or broken leads.

So, when a charge coil measures questionably against known good specs with a known good meter, you may as well change it. The important parts of that statement is known good specs with a known good meter. Molaker taught me alot about this today, hopefully he can add some input.

I changed the timer base.. and it still does it.
 
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