evinrude 1989 140hp starting issues

[ct1762@gmail.com]

great! those motors don't ever have a strong stream out the telltale anyway at idle. the powerhead has to fill with something like 3-5 gallons of water before it spits out the stream. just make sure the idle temp is between 125 -155 degrees at 900rpm (sorry don't know Celsius)

 

[PhatCrewy]

Yea i just went to remove the temp sensors to check them and the port side one fell to pieces so better fix that up. Seem to have water leaking from the water flow control valve as well so might need some new seals or maybe i might upgrade the thermostats like i read on here somewhere. Might need to treat myself to an infrared gun, and wire in the taco so i can see what shes idling at. So 900 RPM on the muffs ? i might try that max advance setting on here aswell while im at it!

 

[PhatCrewy]

Ok so i just tested the temp sensor with the tan and black and white wire. I shoved it in some hot water and the black and white wire closes as it heats up but the tan wire does not seem to close. i have tried this on another one i had lying around to the same effect. what is the purpose of the black and white wire to the power-pack as from what i saw on another post this is suppose to open and close at quite low temps. Is it that quick start ? seems like they are all stuffed which is no good and buying a replacement is 70 bucks for just the tan and 230 bucks for black and white as well. If they are truly stuffed should i just mount an actual temp gauge with a warning ?

 

[Thomas Pointer]

This has been very helpful, thanks. Same linkages as my "new" 140. What preset do you use on the black plastic adjuster on top? ~1/2 the threads?

Cheers!

 

[oldboat1]

Couple of points: 900-1100 rpm is about right on muffs. Look for about 750 in the water, in gear and warmed up.

For testing, it would be useful to find a barrel big enough for that lower unit -- sink it with water well above the level of the pump (I usually try for half way up the shaft). Run at idle or high idle only. Water will be cold, and that affects temps, but should see around 130-140F. 160 is too hot. You may also find that the tell tale works. If not, try feeding a length of weed whacker line in to clear obstructions.

You really need to get hold of a torque wrench, as you may end up shearing the flywheel key and maybe damaging the shaft if the torque is too light.

 

[PhatCrewy]

Hey Thomas not sure to be honest but i wouldnt be surprised as it is under spring tension and adjusts the idle i believe. Thanks oldboat. I do have a tension wrench however its only half inch and i need 3/4 or an adapter which i will sort asap. I do get a solid jet out of the tell tale just takes quite sometime with the muffs on to exit. I removed the powerhead to repair the middle leg mounts and rebuild the tilt trim so now i just want to make sure i have the cooling system on point. Unfortunately both temp switches have died so will replace those and maybe add a temp gauge, and treat myself with a thermometer gun. See if i cant get her sorted. Before i do to much more

 

[TrueNorthist]

The previous owner of my 86 Evinrude 140 loopster warned me the tell-tail takes a couple good beats to let er rip. I let the water run on full blast for 30 seconds or so before starting which seems to fill the housing a bit.

And hey, is there supposed to be a spring inside the cigar? I'm headed over to an online parts store to look at parts schematics asap.

 

[racerone]

The 1-7/8" socket sounds big.----I have taken a few of these apart using a socket that was 1-7/16"----I do not have an 1-7/8" in my tool collection for outboards.

 

[PhatCrewy]

You are correct racerone it was a typo. 1-7/16". I believe that the must be a spring as when you get to full spark advance it allows the rod to extend to get the carbies to WOT and then retract.

 

[TrueNorthist]

Thanks. I was wondering because I can adjust the cigar and absolutely nothing changes. But the high and idle timing stop screws, throttle arm stops, plus both cables are what was adjusted attempting to deal with stalling, so I suspect the cigar was (is still?) simply out of the loop.

The previous owner confessed to fiddling with just about everything, so everything is out of whack. I've bodged the settings to what my intuition tells me is close but as you can see it still coughed in that video, just not quite so bad. It's definitely still in need of proper procedural adjustment and I haven't yet fired it up again. One adjustment at a time, keeping notes.

Apples to apples, so it goes back in the lake for testing. I'm also repairing a rotten floor in the boat, installing new seats and trim foam and running new wiring, lights, gauges etc. Steady work for slave wages.

Cheers

 

[PhatCrewy]

Hey True I hear ya on the boat work thats what i have been doing over the last 4 years haha. I plan to conduct the no run method on here to set the WOT timing. I have already done the pick up timing so i figure once i set that i can fiddle with the starboard adjustment screw as still yet to find out its part in the timing setup. I think it may have to do with timing at idle as i adjusted it as my idle sounded a little high (yet to hook up the taco) and as i adjusted it out the rpm dropped. Mine also seems to still have a cough through the range so hopefully some timing with the timing light will help sort that out

 

[TrueNorthist]

From what I'm managing to glean from learned sources, these motors must be timed perfectly and linkages adjusted to within less than the width of most sub atomic particles. However, even a used scanning electron microscope is a little beyond my credit limit, so I'll have to rely on my reading glasses I suppose...

I plan to dial this motor in as close to perfect as possible before attempting another start. Good experience if anything else. I love the elegant simplicity and tidy, yet powerful appearance of this loopy thing. They're gorgeous really, doncha think?