Hate posting simple stuff like this but I am fed up.
1975 Puch Maxi, 14mm Bing, believe it is the 1.5 or 2hp. Upjetted to 72, no air filter, Tecno boss pipe. Tops out at 35-40mph when running.
Ped was running fine, it stopped running due to debris in carb, then got rained on and had water in the tank and carb, so I cleaned/de-rusted the tank, replaced petcock, cleaned carb, and took the head and cylinder off to clean that, put it all back together, doesn't run. I have done this once before to replace the piston and it fired right up, so I don't think I overlooked anything. I have no idea what's happening here. Have spark, gas is flowing, and apparently it has compression - put a compression meter from harbor freight on it and it peaked at 90psi. Spark plug is new as of 2 months ago, Tecno boss pipe is about 8 months old. All gaskets are good.
When I engage the clutch and pedal, I hear a weird "squishy" sucking sound that I never noticed before. Maybe that's normal and I just never heard it. I have not put an air filter back on yet, but I have run this bike with and without. What else do I need to check?
Got this Maxi a year ago and it has run a handful of times, and when it runs, it runs awesome, so I at least know it is capable. (edited)