I recently 26 Touring that is all original except for a Waukesha Ricardo head and a ruckstell rear axle. After cleaning the commutator it will not start and when cranking a loud poof will come out the intake (it has one of those strange late model setups where the carb is separate from the intake). Before I clean the timer it ran but very poorly. I suspect the sediment bulb to be plugged up but the drain is stuck. Any ideas or tips would be appreciated.
Re check the timer. Make sure the roller is OK. Spring in place etc. Tapping lightly on the opposite end of the drain valve, the spring end, might free it up. Go carefully. If it frees and nothing comes out a piece of wire pushed into the drain opening will free any debris blocking the hole. This will only tell you there's junk in there.
Have a bucket under the sediment bulb when you do your tapping and poking, once the fuel starts flowing out, it flows fast, let it flow a bit before you shut it off to allow any sediment to be flushed out.
If while cleaning the timer you removed the roller, check to see that you have put it back on the correct way. Many of them can be installed just as easily 180 degrees out of time.
On some camshafts the hole goes right thru the threaded area so it is easy to get the timing 180 degrees off. Look for compression on number one and make sure the spark it at about top dead center.
The poof sounds as if it is firing at the wrong point. Severely out of time. it is firing when the intake valve is open. What Tony said might be right. If you had the wires off when you cleaned the timer, they might be in the wrong order. So with the spark lever up be sure to check each cylinder to see if the spark comes just after the piston passes the top dead center on compression. The firing order is 1,2,4,3.
The poof sounds as though the timing is off. What Tony said could be your problem. Or if you had the wires off when you cleaned the timer, they could be installed in the wrong order. Check for a spark just past top dead center on compression for each cylinder. The firing order is 1,2,4,3.