86 b2000 turns over but wont start

There is a fuel inlet pipe that is held in place with a 12-13 mm bolt. If you remove that there is a chance that you might find that the pipe itself is clogged.

After that, the next thing to do in this adventure is to remove the top of the carb and verify that where the fuel goes into it isn't clogged or that the inlet valve isn't stuck. The solenoid has an O-ring on it that you are going to have to watch out for.

It sounds like you've pretty much eliminated everything else that delivers fuel to the carb.

I can blow into the pipe and hear air going through. I pulled the top off and blew in it while pushing the float up and it closes off like its supposed to and I can't blow through. When I let the float go it opens back up. I put it all together and blew into it with the float in its 'natural' position (since the fuel level in there is nearly empty, that is all the way down) I was able to blow in it. So I don't think anything is clogged. I'm so lost...

Try starting it now. Maybe you cleared the clog. Gas should be half way up the window.

I hope you cleaned the bowl while you had it apart. If you had a big blob of water in the bottom of the bowl it would prevent the truck from starting.

Cleaned it out and put it all back together. Still nothing. :'(

Check the timing belt. Maybe you have jumped time.

Just wondering if you ever figured out the problem? My 82 b2000 is doing the same thing! im at a loss here so maybe you found a solution?

Assuming that starter spins the engine at normal starting rate.

First get some aerosol starting fluid and spray that into the intake, ram the pedal down, and try to start. Do this a few times.

If it runs, even for just a few seconds, issue is likely fuel related.

If it doesn't start at all, issue is likely spark related. First thing I'd do is pull off the distributor cap or upper timing cover so I could check that the timing belt was not broken (visually, or distributor shaft/rotor will not turn when engine is cranked). Second would be to check for spark using a spark test device (under $10) or sticking a spark plug in one of the spark plug wires, touching the plug terminal to bare engine metal, and have someone crank the engine while I looked for spark jumping across that spark plug.

Always determine first whether fuel or spark related.

in my case its fuel related, it starts up fine with starter fluid and burns out, my little pump under wheel well is pumping like a mad man but my carb just isnt getting gas to it, im at a loss as to why it will sometime drive (two days ago) and then will decide that the carb doesnt need gas (past two days )

Next time it won't stay running, loosen the fuel cap and try running like that a little while.