1990 Johnson 140 does not start

[valdr]

I've tried to start the motor for my father in law who is not able to take care of it anymore. The motor last ran like 9 month ago therefore I used starter fluid, spraying it into the air silencer as well as into the cylinder as well. The moter would turn, but not fire at all. Checking the spark plugs I noticed that the spark plugs were wet and therefore I assumed the fuel supply should be ok (except the gas is old and I'll replace once I get some reaction). I did not get a spark, and wonder how to trouble should and what are the next steps to do. The boat / motor was just sitting outside in the yard for the last nine month since the last run, so I figured it is just some contact, e.g. I checked the kill switch but that seems ok. Any help / pointer appreciated!!

 

[valdr]

Re: 1990 Johnson 140 does not start

Are thre any procedures for trouble shooting the ignition system?

Somewhere I read that removing black and yellow from PP disables the kill switch and ignition stop. I'll try that later today, but what else can you test? Can I check for power at the PP and / or coils?

Thx in advance!

 

[wilde1j]

Re: 1990 Johnson 140 does not start

Start here:
http://forums.iboats.com/showthread.php?t=158071

Then here:
http://www.cdielectronics.com/downl...linder 1988-2001 120-140 HP (Quick-Start).pdf

You will need a DVA adapter:

http://www.mytoolsforyou.com/automotive-tools/ESI-640.html

 

[ezeke]

Re: 1990 Johnson 140 does not start

The motor has an ignition system that is called QuikStart; it advances the timing automatically for a cold start, so it is important that it works correctly.

The engine needs to turn at 300 RPM for the ignition to fire. That requires a fully charged powerful battery, excellent cables and perfect connections.

When starting the engine cold, the fuel/air mix has to be enriched; this is done with a device called a primer solenoid that allows fuel to be directed straight into the intake manifold, bypassing the carburetors. The primer solenoid is activated by pushing in the ignition key. The primer solenoid is just a valve and cannot create pressure on its own, so you need to use it while cranking the engine. The red handle on the primer solenoid should be aligned with the cylindrical base.

It's quite common for the clip on the emergency kill switch to weaken to the point that the switch is closed, thus preventing the engine from firing. Be sure to check it.