Throw in the towel??

braol

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Apr 16, 2014
348
Hunter 27 Rebel 16 Great Lakes Naval Base, IL
So...I was all fat and happy with my recent outboard acquisition. My diesel has been undergoing repair for awhile now and a used outboard was going to fill the gap until I get it running (injector pump on order). It started on the first pull and ran like a charm when I bought it and I attempted to test run it (just to make sure) with my new tank, lines, etc and now.....starts, sputters, and stops....runs...stops...hard to start....runs, stops....repeat. Frankly, I've about had it with the whole thing... At what point do you just say "To Hell with it!"?

The thought of having to bring a used outboard in for a full tune-up while my diesel is currently out of commission is almost too much to bear...especially considering that the outboard mechanics in the area are all backlogged this time of year. The outboard was supposed to get me out on the water, but now I can see how the whole scenario will play out:

1) The boat will be put in the water with the crane, provisions stocked, slip reservation paid-for...and there I'll be yankin' on the pull-cord of the outboard trying to get it going while the boat-yard staff are holding onto my boat lines...only to have the boat pulled over to one of the temporary moorings and the motor yanked at the height of the launching season and either having to re-haul or pay a daily slip fee until the motor (eventually) getting a green light.

...or...

2) Bringing the outboard to the engine shop now (again, at the height of launching season) and paying $100+ to get a used engine tuned-up by July while my boat languishes in the back corner of the yard until my diesel is fixed (parts due-in 25 May). Repeat #1 above, except this time it's the diesel that acts up and my back-up outboard is still in the shop.

Oh, insert Admiral here with hands on hips and stern look on face asking about this most recent failed $250 acquisition...plus about $100 for outboard tank and lines, etc... There is not much of a comeback when you're sweaty from pulling on a pull-cord in a puddle of outboard cooling water smelling like a chainsaw and your wallet $350 lighter and your kids begging you to ride bikes with them like you promised.... :cussing:
 
Mar 20, 2012
3,983
Cal 34-III, MacGregor 25 Salem, Oregon
dump all the fuel out of the outboard and drain the carburetor.... then get some ethanol free fuel, add two to 3 ounces per gallon of "sea foam" to it... pour it into the tank and get the engine started several times to make sure the seafoam gets fully into the carburetor/system... then let it set overnight.
this should solve the problem.

a lot of times saw and mower shops do this very treatment to fully restore customer equipment to like new running condition, then charge extreme prices for the tune up without doing anythig else other than blowing the equipment off to make it look like they did something to it. and it usually needs nothing more than this..

it could very well be an ignition/coil problem, but before spending $200 on a coil replacement, try the $10 seafoam treatment as a dirty fuel system is the more likely culprit....
 
Sep 15, 2009
6,243
S2 9.2a Fairhope Al
open the breather cap on the fuel and try again and if that does not work go ride a bike and think about it
 

braol

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Apr 16, 2014
348
Hunter 27 Rebel 16 Great Lakes Naval Base, IL
Update...diesel engine part due in June 5th now...rats!
 

kito

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Sep 13, 2012
2,011
1979 Hunter Cherubini 30 Clemmons
So it ran fine with the previous owners tank, lines etc? Does your new fuel line bulb stay hard?
 

braol

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Apr 16, 2014
348
Hunter 27 Rebel 16 Great Lakes Naval Base, IL
Bulb stays hard when I squeeze it. Motor will start, keeps trying to die unless I 'goose' the throttle to max...it catches, run fast for a few seconds...I reduce throttle...runs ok then dies again. When attempting to restart I noticed that the ball needs, maybe, a 1/4 squeeze to make it rock-hard again...but at no time does the ball get completely flat.

Motor doesn't always start on the first few pulls either...
 
Jan 22, 2008
319
Hunter 29.5 Gloucester, VA
Sounds like it could be clogged jets. I had to take my carb apart on occasion and clean the idle jets and the float seal. The Seafoam treatment works well too. Traded my 4hp Merc for a Lehr Propane. Two pulls this season and starts right up.
 
Jun 2, 2004
5,802
Hunter 37-cutter, '79 41 23' 30"N 82 33' 20"W--------Huron, OH
Can you borrow a tank to make sure its screen isn't clogged? The smaller outboards have such small jets that the smallest thing will clog them, usually varnish if you don't use ethanol free gas.
 
Nov 6, 2006
10,095
Hunter 34 Mandeville Louisiana
Another thing to check are the fuel quick connects to make sure they aren't leaking air .. lots of 'em will not leak fuel but when the pump puts a little negative pressure on 'em, air gets in and the engine acts a lot like what you are describing. Strange that it would run on the other tank and lines but when you put yours on, it doesn't.. No problems with teflon seal tape getting into the lines while installing fittings?
 
Oct 2, 2012
14
Hunter 26 Ventura, CA
+1 for Kloudie1 Had a similar problem 2 years ago. The fitting on the bulb of our new hose was leaking air. Had to use dingy's hose until we could find a replacement. We now always carry a tested spare hose assembly. A simple test would be to keep squeezing the bulb and see if the engine keeps running. Good Luck
 

Sailm8

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Feb 21, 2008
1,750
Hunter 29.5 Punta Gorda
+1 on Klondie too. I bought a used Tohatsu with external tank. Ran fine but then started dying. I could keep it running by pumping the bulb every 30 seconds. This started a drip of fuel at the connector so I bought a new end just like the one that was on it. Ran fine for a few months and problem started again. This time I went on line and found I had the wrong connector for my model motor all along. Correct connector is working now for this season with no problems.
 
Jul 21, 2013
333
Searching for 1st sailing boat 27-28, 34-36 Channel Islands, Marina Del Rey
Isn't there a service manual for this engine that will show trouble shooting procedures and correct part numbers?

It is possible that a previous owner simply had the wrong connector attached.

Very good troubleshooting points mentioned above.