[Michael_Velling]

Originally Posted by Mister Moose

I like to take out a spark plug, leave the wire on, and lay the plug on the block or use an alligator clip to ground the thread of the plug to the block. Have someone crank the engine and watch for the spark. It should be a fairly bright blue flash, not faint and weak.
(Best done out of the sunlight) That eliminates the spark from what's causing it, and you are left with fuel, or possibly timing.

If the fuel bowl has fuel, I'd think the next thing to check is the jets. Also you can try a squirt of starting fluid into the throttlebody while cranking. That will fire off enough cylinders to spin up the motor and develop a lot of vacuum, possibly unclogging and drawing in enough fuel to keep it running.

If fuel sat in the carb for a long time, a rebuild might be needed.

Added starting fluid in the throttle area, but no result.

Michael Velling
Germany
www.velling.de