I've been banging my head on a starting issue with the outboard motor mentioned in the subject line (it's a manual pull-start).
Problem is that when I pull it over, it doesn't sound/feel like it even attempts to pop.
- Full, nice spark on new plugs gapped correctly on both cylinders
- TDC is properly zeroed out between flywheel and timing pointer on cylinder 1 (although I don't have a timing light currently, this should be close enough to at least fire the cylinders). This, to me rules out a broken flywheel key
- There's definitely fuel being delivered (carb is brand new) (I've even tried manually misting the intake directly). I've also intentionally flooded the engine to verify that carb is delivering fuel)
- The engine is not flooding under normal starting conditions
- Air vent on the external fuel tank is open and working
- Primer bulb and fuel line from the tank are new and operating correctly
- I have verified that there is no "safety" feature grounded
- Fuel inside of the cylinders does burn to some extent, as if I crank the engine over a few times and quickly pull out the plugs, I get a slight bit of exhaust fumes come out of the plug hole
- I have verified that the proper coil is connected to the proper cylinder
- Everything is lubed up properly, engine has absolutely no leaks at all (it's exceptionally clean actually)
The only thing I haven't ruled out is the engine compression (as I no longer have a compression tester).
My question is whether this sounds like it could be compression or not. If so, I'll go buy a new tester and go from there (that said, at least when turning it over, it feels like the compression is good, but I know that's not a valid test).
If compression doesn't seem like a reasonable problem, any other ideas what it may be?
Since I just recently acquired this motor from someone else (you can keep it if you can fix it), I'm speaking only of cold-start here, as I've never been in the presence of it when/after it's already been running. Temperatures yesterday while I was working on it were approximately 13C.