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this was my first attempt after rebuilding my carb, getting a new battery, draining the diesel from the cylinders and cleaning off the spark plugs

Heres a link to the vid:
Almost started

Anybody have any idea's as to why it would "fire" like that and then just die off?
ive tired advancing my timing and it seems to work best a TDC...
Thanks so much!

Your buddy says gas pouring out somewhere. That needs to be fixed first.

ya, its leaking out of the linkage from where the plunger end comes out of the float bowl and hooks up to the throttle lever. i have no idea how i would fix it, i mean i know Rochester's leak but i dont know how bad..

That means it is flooding. The level in the float bowl is going way above where it should be.

how to i stop it from flooding?

Hy Josh_51GMC, to stop it flooding you need to have the float level inside the carb set correctly. You must also have a good needle and seat, and your floats must be light and not full of gas, hope that helps.

ill take my carb apart again and see if i can set the floats properly, everything else should be fine since i just finished my rebuild.

One other thing IT STARTED!!!!!!!
but everytime we hit the throttle the carb floods... would this still be the problem with the floats?

Likely. Your kit should have had a paper guide for setting the float and a new needle and seat.

the rebuild kit only cam with a measuring square and a piece of paper that says where all the parts go and how to prep them... nothing about floats..

the measuring square is for checking float settings up and down ... there will be a measurement someplace

Bill

Usually there is a chart on the opposite side of the page with the float drop measurement and the float level setting. If this is a Rochester B, the float levelshould be 1 9/32". This means when you hold the air horn upside down, the top edge of the float should be 1 9/32" from the flat surface. When you turn it rightside up, the float drops down and it should then measure 1 3/4" from the flat surface .

Alright, quick question... How to i set the float? like how do i make it stay at 1 9/32" and 1 3/4"?

Hy Josh_51GMC, there is a bendable tongue which is part of the float assembly, it rests on the needle, you have to bend that until the floats sit at the specified setting with the top of the carb upside down so that the float will sit on the needle when it is in the closed position. Do not just push on the float when it's resting on the needle, if you have a "rubber" tipped needle it could be damaged or jammed into the orifice by that practise. The drop adjustment is done by a tang which rests on the back of the the seat "tube" which the needle is installed into, bend the tang to limit the drop to the specified measurement. When you check the measurements make sure both of the floats are measuring the same distance, and that the floats are light and not full of fuel, hope that helps

Thanks 3B, i got it. and it worked, only a tiny bit of gas leaked from where the top and bottom half's of the carb join.

For setting the idle speed though, my truck idles real rough and will only continue to run if somebody keeps pressure on the gas pedal... any ideas as to what can be done? i first tried with the idle screw all the way in, didnt work. then i tried 2 and a half turns out... still no. then i tried 4, again no......help

Hy Josh_51GMC, you may have a vacuum leak, or some cylinders that are just not contributing. Have you done a compression check yet? Do you have a vacuum gauge that you could hook up to the manifold vacuum with the engine running? Those two things will tell you a lot about how the engine will run.

alright, ill see if i can stop in at KMS today and buy a vacuum gauge and maybe a compression gauge