noah wrote:
On 12 Sep 2003 01:28:29 GMT, (BORDEN1000) wrote:
Greetings:
I'll keep this tale short.
I over heated my 15 hp johnson..impeller died. Cylinder wall reasonable /
honed both. New rings on the pistons, all new gaskets and it is back together.
Good compression, visible spark w/ plugs out, carb float set level when held
upside down. Timing is not adjustable so I don't think I messed that up.
Anyway, no starting or firing. I don't think I'm getting fuel, or...something
else that is more elusive. Any step by step advice to absolutly track this
prob down? This must be a simple issue. I need air and fuel in the right mix
and spark at the right time and wham-o....I am back on the water.
Thanks in advance.
BL
Sounds like fuel...
Using "earmuffs", or other water source, pull the plugs. Squirt a
little *mixed* fuel into the cylinders, and put the plugs back. If
she fires, you've narrowed down the problem. 
)
Good luck,
noah
If you are getting 'wet' plugs then fuel is reaching the cylinders. If
its a points
ignition check the points gap as this affects the timing considerably. Got
the linkage from the magneto base plate to the throttle butterfly set up
right? (you have had the carb off after all) If you suspect fuel system
problems with an air leak or failed fuel pump, try a portable tank 1 or 2'
above the powerhead. Did you compare the new carb gasket with the old one
to check that all holes were present? (I dont remember if that cound be an
issue on a 15's carb)
Lastly, the one i've been bitten by,
IF IT COUGHED ONCE AND NOW IS AS DEAD AS A DODO, YOU PROBABLY FORGOT TO
TIGHTEN THE FLYWEEL NUT SUFFICIENTLY AND HAVE SHEARED THE WODRUFF KEY AND
SPUN THE FLYWHEEL ON THE CRANKSHAFT WHICH HAS TOTALLY STUFFED UP THE
TIMING.
--
Ian Malcolm. London, ENGLAND. (NEWSGROUP REPLY PREFERRED)
ianm[at]the[dash]malcolms[dot]freeserve[dot]co[dot]uk [at]=@, [dash]=- &
[dot]=.
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'Stingo' Albacore #1554 - 15' Uffa Fox designed, All varnished hot moulded
wooden racing dinghy circa. 1961