Posted by Danby on May 05, 2014 at 22:10:45 from (97.126.77.106):
I'm having a heck of a time getting my 300u to fire up. I replaced the head gasket after finding water in the oil, and did serious clean-up, but not a rebuild, on the carb.
I've checked all the plugs with a spark tester, as well as outside the cylinder. The coil is brand new, from NAPA. I did a compression test and all 4 cylinders have good compression. First stroke hits 90 psi, which is 6.6 x 13.6. It tops at 120 psi, which I assume is okay.
That left me fuel and timing. The plugs are getting wetted with gas, so I'm pretty sure I'm getting fuel. I even tried a spray can of stating fluid, which I can reliably ignite in the carb by setting timing back far enough, but not in the cylinder.
No matter where I set the timing, I cannot get this thing to fire. Is there something else I'm missing? Spark heat? I've already burned up an old battery trying to start it.
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