Did a lot of work already so i bring some labor and insight to the table. Now I’m stuck. Bought this recon "needs carb rebuilt". Rebuilt carb and bam, starts right up but smokes white (Seemed to start clearing up towards the end but died before it fully cleared so not sure what’s up). Anyway, I let it run idle for 20 min or so, then took it for a quick spin around the block (no air filter, but not a dusty environment)- aaannddd it dies. Like someone just pulled the spark plug wire. No noise, no stuttering, no putts, nothing. It just instantly shit the bed.

Symptoms- Won’t start, spraying a little fuel out the carb. I can feel suction AS WELL AS AIR COMING OUT of the carb kind of like a push/pull. Will occasionally putt like it wants to start, like a single combustion, but never fully cranks, and this is only with starting fluid. But still no start.

What I’ve tried- Replaced carb with new honda carb. Replaced plug. Checked for spark, it’s there. Fuel flow, it’s there too. Checked valve lash, close enough to .005 (intake seems to be at .004). Checked timing (by eye), both valves closed during TDC on compression stroke. Checked compression, 35 dry 60 wet (read on though). Put 120 psi compressed air through the spark plug hole and couldn’t hear air coming from anywhere outside the engine. Held pressure for a few seconds. Assumed piston rings at this point, removed head and poured about an inch of oil on top of piston. Oil sat there for 30 min before i removed it. So it didn’t pass the rings. Not sure if this is a good test but it seems like a pretty frickin good seal to me. Checked head gasket, no evidence of leak (no dark spots).

All this and still no luck. So here I am, at the mercy of this forum. Please don’t leave me hangin guys lol. Could really use some advice here. I’m not a mechanic but I did everything I could do before asking stupid questions. In advance, much appreciated….Adam

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