Re: 1925 Franklin ? UPDATE
So I informed the owner we needed to drain the tank and check for compression. He had drained the tank a few days ago, and added a couple gallons of fresh fuel. Since it has individual valve covers, we removed them to visually verify there were no stuck valves, and observed the valve train operating as it should. With plugs out, compression check showed all 6 within 2-3 lbs of each other, mid 50's psi.
Removed the carb to find it very dirty internally. The brass fuel filter in the carb is pretty much Swiss cheese and wouldn't stop small rocks. Needle valve was not sealing to the seat, jets plugged and so forth. Cleaned it up, put it back together, fired it up, same issue fuel coming out exhaust manifold flange.
So as I'm looking at the glass sediment bowl and thinking how good this gas looked, and it hit me, the vacuum tank had not been drained. Grabbed a jar and opened the petcock, well, there is were the fuel issue lay. The crap that came out, surely was unburnable and is what was coming out #6. Filled the vacuum tank with fresh fuel, started it up, no fluid leak at rear cylinder and it (#6) is firing.
starts quick, but is running really rich. Found an original service manual on eBay, he should have it in a week. Will probably go thru carb again, and see if we can make or find a filter screen, and will be able to adjust carb according to manual. This carb is quite complex, makes a zenith appear so freaking primitive. Looks to need plug wires as insulation was melting near the plug end clip, must be loose inside the end.
Attached is a pic of the stuff from the vacuum tank, no wonder it wouldn't burn, and boy did it ever stink! Will be about a week or more before my next visit, but am making good headway on a vehicle that has been stored a significant time with numerous issues.