Please help with problem.

R

racingroddy

Recruit
Joined
Feb 22, 2009
Messages
3
I have a 1981 Johnson 150 HP. Here is the problem:
When I'm checking the timing and the RPMs increase the starboard side stops firing and the strobing stops on the timing light but when the motor is just idling, everything is fine. What could be the problem?
 
S

splitshot

Petty Officer 1st Class
Joined
Feb 10, 2008
Messages
251
Re: Please help with problem.

I believe your motor has two power packs one for each side of the motor.. switch the packs and if the problem follows the pack it needs changing if the problem stays on that same side then we will go from there ;)
 
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racingroddy

Recruit
Joined
Feb 22, 2009
Messages
3
Re: Please help with problem.

splitshot said:
I believe your motor has two power packs one for each side of the motor.. switch the packs and if the problem follows the pack it needs changing if the problem stays on that same side then we will go from there ;)
Click to expand...

I have tryed two different power packs and it still does the same thing.
 
jay_merrill

jay_merrill

Vice Admiral
Joined
Dec 5, 2007
Messages
5,653
Re: Please help with problem.

Are you sure that the second power pack that you used is good? I would take Splitshot's advice and see what the result is.
 
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ezeke

Supreme Mariner
Joined
Sep 19, 2003
Messages
12,532
Re: Please help with problem.

Trace the black with yellow striped kill wire from the ailing powerpack to the large red engine harness plug; you likely have a short to ground in that wire. It runs through the 4 wire amphenol plug between the powerpack and the ignition coils.
 
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