Thremostat??

[ted655]

'83 140 Evin. We usually putt around in the swamp here, then get out in a main canal and get the boat going to blow out any carbin that has built up from the slow speed. This last time as we were dashing for home, the alarm came on. We stopped for awhile and cooled down. WE started up and kept it at a low throttle. The engine was peeing fine, the water not hot at all, just a tad warmer than the canal. If we tried any more throttle it would slowly quit peeing and steam would start coming out. Cut back and it would be peeing steady again. Thus we limped back to our dock. I raised the motor out of the water and there it set for a month. I figured it needed a pump.<br />Going over my sales paper, I saw it had a new pump installed just before we bought it. I needed to charge the battery, so I went down and started the motor. It was peeing fine and after awhile it warmed a little, then cooled a little, like a thermostat was operating. So... off for a test spin we go. It soon quit peeing and just a dribble was trickeling out. Back at the dock again we turned it off and went looking for the Therm. housing (still looking. the manuals pic is of a 2 cyl, not the 4. Go figure, it's a factory manual.)<br />Our long time boating shade tree neighbor said to stick a wire up into the weep hole. We did, a non event. Felt no obstruction and nothing on end of coathanger. Pushed it in.., pulled it out/ Another test spin.., that lasted for 2 hrs. The motor peed perfectly, no overheating, it was as it had been when we boight it 6 mos. ago.<br />A coathanger up the weep hole?? whats up with that?

 

[usedboats4u]

Re: Thremostat??

IF YOU FOLLOW THE TWO RUBBER HOSES THAT COME OFF THE BOTTOM OF THE HEADS YOU WILL FIND THE THERMOSTAT HOUSING, I AM GUESSING YOUR IMPELLOR OR IMPELLOR PLATE IS BAD, NO MATTER HOW NEW IT IS. <br /><br />GOOD LUCK

 

[Solittle]

Re: Thremostat??

Replacing the thermostats and water pump is a bit of a pain but not really that difficult. Disconnecting & reconnecting the shift rod is a pain as is removing & installing the thermostat cover. I urge you to get the OMC shop and parts manual for your motor.

 

[Hooty]

Re: Thremostat??

Q. "A coathanger up the weep hole?? What's with that?"<br /><br />A. Mud Dobbers. <br /><br />c/6<br />Hooty

 

[Melvin Hatcher]

Re: Thremostat??

How could a plugged weep hole cause overheating?

 

[ted655]

Re: Thremostat??

Exactly!! Me thinks me neighbor is funnin me. BUT after I did it, it started peeing again and hasn't stopped. Went out yesterday- no problems. <br />Is the waterpump a pass/fail type of deal? I can't think it would come and go in it's operation<br />As for the manual.. it is a OMC factory manual.<br />P/N 507664 120 thru 300 XP, GT models. I told them I had a '83 140 and this is what they sent. None of the pibtures look anything like mine though.<br />I traced the hoses and think I found the T-housing. Way down inside the bottom cover at the back of the motor. How ya posed to get at it?

 

[93bronco]

Re: Thremostat??

they gave you the wrong manual. sounds like you got one for a 90 degree looper, which is totally different from what you have.

 

[ted655]

Re: Thremostat??

Thanks. You have any bridges you want to sell me? Hell I'm sticking coathangers up weep holes and paying $60.00 for wrong manuals. Tomorrow Ma wants me to take the cow to town and sell her. I'll let everyone know how that turns out.

 

[ted655]

Re: Thremostat??

After putting in new plugs, I started her up and Lo-N-Behold! My sharp eyed son saw a stream of water escaping from one of the hoses going to the thermostat. Hose is OK. The plastic tie used as a hose clamp was broken. Were they put together using plastic ties? Seems cheesey to me.<br />.<br />Was S.L.O.W. a feature of this motor in '83? Since the alarm went off, I seem to have less throttle. No pulsing or missing, just less top end. Less warm-up throttle to.

 

[ted655]

Re: Thremostat??

Everything fixed. Here is sequence of events.<br />1. Plastic hose clamp breaks. Water is diverted from right bank. alarm goes off. we limp home.<br />2. Something plugs weep hole (mud dobbers, algi,?? ). Plugs foul while testing. I pull cover off and break coil wire inside connector plug.<br />3. Put in new plugs. find hose leak. buy metal clamps and fix leak. Motor runs 1/2 rpm, but pees good again.<br />4. Tear coil wres completely out of plug while putting cover on. Fix wires and reroute correctly.<br />5. Start motor. Everything running and peeing good. Put cover on and recheck. No problems<br />6. Sit for a long time in boat, wondering just how stupid one person can be. Give some thought to jumping in the water. Get a hunger pain and a mosquito bite at the same time. Go into house. Tomorrow is another day.<br />7. Write a post to thank everyone for their help. THANKS!