1986 Johnson 140 cooling system question

F

fetoma

New member
So I started the engine for the first time since the spring purchase. 1986 Johnson 140. Slapped the motor flusher on, turned the hose on, and she started right up, yay!

Water wasn't coming out of the discharge port underneath the motor cover, so I shut her down to come here and ask a question.

Question: Is water supposed to come out of the discharge hole as soon as the engine starts, or does the engine have to heat up enough to open the thermostats before the water comes out?

Thanks,
Frank
 
One of the engine guru's can answer your question better than I cn, but I *think* the t-stats have to open first before the pisser spits water. I have a Evinrude 200 of about the same year and that's how it works on mine. But by all means verify with either Ferm or Spare or anyone that actually knows before you ride off into the sunset.
 
The exhaust chest has to fill before it will pee water, but I know of NO outboard that doesn't pee when the stats are closed. They may not pee much, but there should be some as the whole point of the pee hole is so you you know it's pumping water. It would be counter productive for them not to pee with the stats closed. When in cold water many times the stats will hardly open.

For your 86 140 the pee tube gets it's water supply from a 90 degree elbow that comes out of the exhaust chest, near the top, very rear of the engine, just below the plastic parts for the ignition and wiring cover, and just inside of the port side cylinder head. It's not uncommon for debris to get clogged up inside of the fittings and lines. That water hose from the fitting goes over to a tee on the lower starboard side of the engine. One side is the pee tube feed, one side goes out, and for the early loopers the other side of it goes up to the throttle controlled coolant bypass valve that dumps more water out the pee tube once the throttle is opened so as to allow the stats to fully open and cool the engine under power.
 
I believe this is the fitting in the pictures Ferm. I pulled the hose off and started it up. No water was coming out of the fitting, but there was what looked like steam or hot air coming out? :head:
 

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Thats the pee tube outlet from the exhaust chest. You can remove the fitting to see if its plugged up in the fitting or behind it in the block. On a set of muffs, it can take 30-45 seconds for water to start coming out as te block holds almost 2 gallons of water, and it has to fill up before it can pee anything.
 
Slightly_Twisted said:
Ferm, hope your shoulder is feeling better!

How do you know the details of so many engines? You are like a library of engine info!!!!!
Click to expand...

Worked on them for awhile. I did alot of stuff with carbed engines as I was of the dinosaur generation of knowing how to setup multi carbs. Didn't do much with the newer dfi tech, so I don't post much about those.
 
All is well Ferm. I'm only using single feed muffs, so it took a while for the chest to fill I suppose. Thanks for the help. Your expertise is very much appreciated by all I'm sure!!! Happy 4th!
 
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