1964 3 HP YACHTWIN DILEMMA

[Hungry Jack]

1964 EVINRUDE 3HP YACHTWIN MODEL 3432.<br />PROBABLY HAS 500 HOURS ON IT. NO KNOWN TUNE UP EXCEPT NEW PLUGS SINCE 1964.<br />PROBLEM: MOTOR LOSES POWER FOR RANDOM PERIODS 1 TO 10 MINUTES AND JUST AS SUDDENLY ROARS BACK TO LIFE FOR 1 TO 10 MINUTES. WHEN IT "SLOWS" I HEAR A FAINT CLICKING SOUND LIKE WHEN YOUR AUTO SPARK PLUG WIRE ARE WET AND SHORT OUT, BUT IT MAY BE MY IMAGINATION.<br /> I'VE INSTALLED NEW PLUGS AND PLUG WIRES. <br /> THE GAS IS NEW AND MIXED PROPERLY.<br /> I'VE DISASSEMBLED THE CARB. IT LOOKED BRAND NEW. I SAW NO NOTICEABLE PROBLEMS.<br /> POINTS ARE HARD TO SEE BUT LOOK CLEAN AND ARE NOT PITTED.<br />WHEN IT RAN ON "SLOW" SPEED FOR A FEW MINUTES, I STOPPED THE ENGINE AND PULLED THE PLUGS. THE TOP PLUG LOOK NORMAL, BUT THE BOTTOM PLUG WAS WET WITH GAS. SO I'M THINKING IT'S RUNNING ON ONE CYLINDER AND I HAVE AN ELECTRICAL PROBLEM. BUT THE RED HERRING IS WHEN IT RUNS ON "SLOW" SPEED IF I PULL OUT THE CHOKE AND JUST BEFORE IT DIES PUSH IT BACK IN 75% OF THE TIME THE ENGINE WITLL KICK IN AND RUN AT FULL RPMS - MAYBE BREIFLY MAYBE LONGER??? hOW CAN THAT HAVE ANYTHING TO DO WITH AN ELECTRICAL PROBLEM.<br />ANY SUGGESTIONS GREATLY APPRECIATED. I'M IN THE BWCA IN MINN. AND AM 150 MILES FROM MOTOR REPAIR.

 

[DJ]

Re: 1964 3 HP YACHTWIN DILEMMA

Hungry,<br /><br />The symptoms you desribe are of a coil failing. There are two of them under the flywheel.<br /><br />Also, if you have the cork float, replace it.

 

[Hungry Jack]

Re: 1964 3 HP YACHTWIN DILEMMA

DJOHNS,<br />THANKS FOR THE QUICK REPLY. NOT WHAT I WANTED TO HEAR HOWEVER. I DON'T HAVE A GEAR PULLER FOR THE FLYWHEEL.<br />I DO HAVE A CORK FLOAT AND WILL REPLACE IT. WHAT'S WRONG WITH THEM?<br />THANKS AGAIN

 

[Paul Moir]

Re: 1964 3 HP YACHTWIN DILEMMA

The puller your looking for is a "Harmonic balancer puller" with some 1/4"-20 bolts, available at reasonable prices anywhere automotive tools are sold. Don't use something like a gear puller that grabs the sides, or you'll probably break your flywheel.<br />Those coils can be had for < $15 each + shipping if you shop around. They're available from NAPA if you don't like shopping. <br />Modern gasolines tend to eat the enamel off the cork floats, and then saturate them with gas so they sink. That causes the carburator to overflow with gas.