the primary coil wire to the points will sometimes stick out from under the coil and rub on the rotating crankshaft and eventually ground the wire killing the sparks.
engine frame meaning the engine ph.
boot ohms to engine block must be 4-8kohms approx. depending on coil...
points point points..... must be super clean. burnish new points wash with carb cleaner and blow dry .
disconnect the kill wires to the front push switch in case they are shorted
boot plugs to frame must be 4-8 kohms tuck coil wires away from the shaft
see old style carb problems on the low speed section where fuel drips down at idle
if yours is not a coil issue to solve .... the carb's LS section needs the top plug taken out with a small drill hole and pick. clean the small drip holes and all passages and reinstall a spare plug...
Has suggested on-going maintenance is key to happy boating.
what is the mdl number ?? of your engine
you should do complete check of things on a new to you engine.
incl. gear oil replacement, impeller, check for proper cooling (thermostat)
a carb service is a good investment...
wires oxydize and..some break ... make certain you see 12V on the S post at key START and 12V on the B post. .
if you have 12v on the S post at START and the neutral switch is OK trace the S wire back to the solenoid.
year hp and mdl of engine ??
since it has a nipple/barb to the crankcase to get pulses and if you are unable to restore it back to operation you could always hook-up a more modern fuel pump with an external filter.
Idoubt nylon absorb water.... it deforms when crushed the first time and should simply not be reused or flipped over to save a few pennies.
still applies today on modern engines
servicing small outboard is realy not complicated. Leroy's can provide you with the basics. if you have no internal mecanical issues the rest is oil mix, carb jobs, greasing where needed, refilling/checking gear oil etc...
thanks for info... may be a non issue in this case. Years ago my Merc 45 was running high causing my Humminbird fish finder to shut down. I eventually resorted to installing 3 small volt. regulators in parallel (Radio shack stuff) to give me 3 amps on the fish finder. Gave me a real nice...
no expert but 14v should suffice... 16v certainly seems high and may cause some eqpt to shut down..
check battery voltage on its own...should be around 13.5 fully charged or have it load tested.
try another battery as a test see if results change
just fyi see how old 2 strokes are mofified to run a pump with half the crankcase pressure pulse channels .
on older ( pre-1960s) pressure tank eqpt. outboards the air pressure is channelled to the tank via 2 flapper valves and builds up in the tank which in turn pushes fuel back up to...
pressure pulses to drive pumps frequently come from one section of the crankcase. flooding it with fuel from a bad diaphragm will not affect the other half of the cranckcase
and a recent case of dirty carb was resolved with several sessions in a ultrasonic parts cleaner at 50C temp. to really loosen crud in tiny passages. see cleaning tools for carbs...
