My Poor Fastwin

[LaqueRatt]

Boy the previous owner, a lady school teacher, really told me a story when I bought my boat. Said they'd had it on the water a few days before and all was well, except, of course it needed the "carb cleaned." Has there ever been a motor sold that wasn't said to need the carb cleaned? If it were only that easy. All signs seem to point to this poor motor being abused and neglected.

So far, I've replaced the points, condensers, coils. Timed it and set the dwell. Replaced gasket on leaky fuel pump and cleaned screen.. Replaced the fuel lines. Flushed the tank, cleaned the strainer, repaired leak at the elbow, twice. Replaced one quick connector. Had the carb off for cleaning twice.

Have had it out on the water 4x and it crapped out on me every time. Even though is seemed to run well in the barrel. Going to try it again today. You guys have told me what a good, reliable, strong motor the 18 is and I believe it. Just hope if get the damned thing sorted out it will be serve me well for awhile. So here's my notes from yesterday:
Cleaned the carb again. Didn't look dirty.
Started right up.
Ran decent, no coughing.
Adj low speed jet for best performance.
Ran for 12 minutes.
Started coughing and died.
Wouldn't restart.
Checked for spark. No problem.
Sprayed fuel into the cylinders.
Ran for a few seconds.
No restart.
Added 3 oz SeaFoam to 3 gals fuel.
10 minutes or so and she starts back up.
Running fine. Burbling nicely at low RPMs.
Thinking it may be getting hot, lasered the heads: 125-135
Ran awhile, started coughing and same crap.
Checked fuel pump. 12 pulls got me about a shot glass worth.
Finally got it restarted and ran for 45 mins as I played with the adj screw.
Idling and accelerating smoothly now.
Seems like it will run as long as I want it to and starts right up.
Guess it's time to take it to the lake again, but my confidence is not high......

Think I'm good now? I just can't imagine what I'm missing. It has really good compression too. Any thoughts or comments would be greatly appreciated. I've worked on most every kind of engine in my life, but never an outboard before.

 

[Crosbyman]

well if electricals are ok compression is ok then fuel starvation seems likely

have you tried hand pumping it to see if it it will keep going

check for air leaks suction side. , tank pick up clean ??

carb was clean job done how exactly.....??? spray wash or full take apart job ???

 

[racerone]

They are a wonderful / simple / reliable / all you ever need motor.-----But if somebody get into with a big hammer and crowbar all bets are off.

 

[LaqueRatt]

So I had the world's shortest boat ride yesterday. In and out, back to the house in an hour. Turns out my hub is spun. Seems I just can't get a break with this motor, or maybe I can....Every damn thing is breaking! LOL

Anyhow do I have any options here? I see some "new" props on line, but they're around $150, which is a pretty hard hit, but with no prop I'm going nowhere. I also wonder if these are NOS and if so, won't the rubber be brittle too? I'd hate to cough up all that money and then have it spin too as soon as I hit the throttle. A cheap used one would be OK if anybody has one they want to part with.

I'm tempted to MacGyver the thing, but the rubber is totally wasted and would need to be replaced with something.

Also is marinepartssource.com a legit place to get parts from? They have the prop for a better price than anywhere else I've found.

 

[airshot]

If you have a prop shop near, they often have used or reworked props for sale. Ebay also has a limited selection of used props. A prop shop could rebuild your current prop

 

[LaqueRatt]

I tried a local prop shop and they looked at me like I'm nuts. They have no hubs to fit pin driven props. I'm currently thinking of ordering a new prop, not a used or NOS, from Green Bay Props. Anybody have experience with this outfit?

As for the old prop, planning on replacing the rubber with urethane and tapping holes into the meaty part of the brass center which will help stabilize the core and allow me to center it precisely. Loctite will keep them in place. I'll be using small stove bolts so I do think they'd shear if it came to that.

My two concerns are, I've never tried tapping a hole in brass before and will Loctite hold a bolt in a brass hole? This will be just a temporary fix until the new prop arrives. If it fails, oh well. If it doesn't I'll have a spare prop.

Any thoughts or comments are appreciated.

 

[airshot]

I have had good sucess with finding reworked props for far less than new cost. If your homegrown fix is not done correctly, with a precise balance you might be asking for trouble, expensive trouble. To save an old worn out orip might very well cost you a motor....is that worth it ??

 

[oldboat1]

Did you replace the water pump impeller? Your IR readings may represent the low end of actual operating temps, particularly if there has been over revving.