At my wits end, with this no-start problem!

[dlshady]

Bob,

I've read through every post in this thread so thatI don't make a bunch of useless suggestions, but the one thing I don't recall you mentioning is a basic compression check. Many years ago I attended an AC Delco training school for the (then) new EFI systems, and the one thing I remember my instructor saying is that all internal combustion motors have one thing in common. To run they have to "suck, squeeze, bang and puke", and they have to do all of the above in the proper timing.

If I were in your shoes, the first thing I would do is verify whether or not the engine is doing the four basic functions above, regardless of whether it's doing them at the right times.

1) Hold your hand over the throat of the carb to be sure it's attempting to draw air in.

2) Run a compression check, or at the very least crank it over while holding your hand over each plug hole respectively to be sure of compression.

3) Check for spark (which I'm pretty sure you have covered)

4) Make sure there's no abnormal obstructions in the exhaust

Once you can be sure that the engine is capable of getting air/fuel in, compressing it, combusting it and getting rid of the spent gases then you can move on to making sure that everything is happening in the right order and in proper timing.

If you suspect a fuel problem (which doesn't seem too likely) then shoot it with ether while cranking.

From the sound of things it looks like you have everything the engine needs to run, which would make me think that something must be happening at the wrong time.

Keep us posted!
Deron