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Conference vicki::boats

Title:Powerboats
Notice:Introductions 2 /Classifieds 3 / '97 Ski Season 1267
Moderator:KWLITY::SUTER
Created:Thu May 12 1988
Last Modified:Wed Jun 04 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:1275
Total number of notes:18109

1219.0. "'66 80hp Johnson dies after acceleration" by POWDML::ZABEK () Tue May 16 1995 08:56

    I have a '66 Johnson 80hp electric shift motor that I just put in the
    water 2 weeks ago. It was tuned up last year and this year I installed
    new plugs and a gas filter. The first time in it started right up and
    went 2x around the lake at full throttle. A week later I started it
    up and it died only after approx 20 seconds at full throttle. After
    repeated attempts the same thing happened. Some times I would have to
    wait a little - it would stall out with more gas applied. Last year
    this problem didn't exist - always ran well at full throttle. It has no
    problem starting between attempts. Did anyone have a similar problen
    with a possible solution. Maybe a piece of debris in the fast air jet??
    Or possible fuel diaphram misfunction?? By the way, it accelerates great
    but then just fizzles out completely.
    
    
    Any help appreciated!
    
    Steve
    223-4593   
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1219.1NODEX::HOSFORDTue May 16 1995 11:264
    I have had this problem, for me it turned out to be the bulb in
    the gas line. 
    	Peter
    
1219.2Water in gasPENUTS::GORDONTue May 16 1995 12:3311
I would check for water in the gas especially if you have internal gas tanks.  Second
try the gas filter.  If you have an internal tank you should have a fuel/water 
separator filter.

I spent a whole day once getting back to the dock and draining the water from the
tank.  I also installed a separator that day and had no more problems even though 
there was still water in the tank.  I would drain the filter after every run until
all the water was gone.

Gordon
1219.3Outboard? whassat?KAHALA::SUTERNever too Hot!Tue May 16 1995 13:3610

My first guess... tank vent not working properly or gas line from
tank to motor is bad or not connnected properly.

I know this may be way too basic, but your "stalling" problem sure
sounds like the same problem that occurs when the gas tank vent is
mistakenly left closed.

Rick
1219.4Empty your gas can and inspect the fule and tankUNIFIX::FRENCHBill French 381-1859Wed May 17 1995 08:437
    When I had a problem like this, it was bad gas. It had gelled and was
    clogging up the pick-up strainer. Upon pouring the gas out of the 
    tank, there werer these little blobs of sticky jelly all over the sides
    of the can.
    
    Bill
    
1219.5if all else fails .. try the condenserNIOSS1::HOBBSRick HobbsWed May 17 1995 18:226
	If the above, excellent suggestions fail to resolve your problem
you could try replacing the condenser (and points while you are at it).
I have seen condensers become intermittent and display similar symptoms
as a fuel problem.

	Rick
1219.6I have the same problemCNTROL::SALMONThu May 18 1995 10:424
    I seem to be having the same problem with my 3 hp Johnson. I purchased
    it used earlier this spring, and the guy I bought it from left gass in
    the tank over the winter. Does any recomend (or NOT recomend) using
    GUM OUT?
1219.7Winter stored gas may be the problem.POWDML::ZABEKThu May 18 1995 13:4616
    I have 3 gas tanks that came with the boat and all had old gas which
    was stored over the winter. One tank was stored full and I added an
    additive to keep it "fresh" over the winter. The 2 other tanks were
    emptied this year and refilled with new gas. Maybe these "globules"
    of old gas ar still floating in the tank and clogging a carb jet.
    I'm going to try some kind of gas additive that would clean the carbs
    or dissolve whatever is causing the problem .....if this is the
    problem. The tanks are circa 60's and probably are not the most
    efficient. Maybe a new tank would do the trick although last year this
    problem did not surface.
    
    I may try the condenser/points replacement if this doesn't work.
    
    Thanks for the suggestions,
    
    Steve
1219.8Another slantSOLVIT::SOARNG::TIMMONSTue Jun 20 1995 13:509
    I have a '64 Evinrude 60hp. The problem I had was after 2 hrs. or so
    running, when I throttled down to idle, the engine died and would not
    restart. (The first time it happened, my car/trailor was at the
    southern tip of Alton Bay and the engine died in the channel at the
    Weirs....cost me a $25 taxi ride to get my car/trailor!). After several
    trips to 2 different repair shops, it turned out to be an ignition coil
    that broke down after it heat up (2hrs). Always started fine the first
    time. This engine is the "Sportfour" model with a magneto ignition.