I just put my 292 back together bored 30 over with all new bearings. The carb is also rebuilt. When I go to start it with the choke closed it really has trouble overcoming the compression. When I open the choke it cranks easier. When I rebuilt the carb I put all the jets and float needle valve at the same spot. However when I first tried to start it fuel was coming out the vent tube so I adjusted the float needle valve one turn down. It will eventually start but it has to crank a long time before
It finally starts. I have to hold
The gas pedal down. It will try to catch but does not always catch. Even after it has run for a while
It still does not start up easy. I have checked and properly gaped the points to 15 thousands. I am
Getting good spark so I am
Pretty sure it is fuel
Related. Any thoughts or idea as to where to start? I am
young so I have not dealt with carbs much at all. Any help would be appreciated thanks.

Ok this is my first post in a long time.  It could be the fuel because your car has probably sat for a long time.  Buttttt, I would check your valve lash first.  Set the valve lash a little on the loose side.  Next if you can get it started check the timing.  I would bet your timings off and that's your problem.  Try that and see what happens.
 

Greg 

Are you sure that the ignition timing is right?  Struggling to crank is a symptom of overly advanced timing.  Could you have the firing order wrong?
Anyway, first verify that your pointer and mark on the balancer are in line when the engine is at TDC.  With the marks lined up and with #1 at TDC, check the rotor under the distributor cap.
Is it pointing to the #1 tower on the cap?  If not then you may be a tooth off.
Once you have the basic timing correct, and the firing order double checked, set the timing with the engine running at a slow idle to about 5 degrees BTDC.
And go form there.

The timing is properly set with 12 pins. Between the marks on the chain. The valve lash was set before I put the engine in the truck I did a complete
Rebuild on it. The firing order has been double checked. It is firing on the correct cylinder. At first it was off and wouldn't even start till I check and adjust the firing order. Not to sound stupid but is there a way to check the timing without a timing light? Once it starts it runs pretty good however it will not idle very slow though.

Try keeping the distributor clamp loose enough so the distributor can be turned while the engine is running.  Try moving it a bit counter-clockwise first to retard a bit and see if it will settle down.
Try to find a spot it likes.  Timing lights are not expensive.  You really need one to set it and know where its at for tuning purposes.

Hope this helps
https://www.youtube.com/watch?v=UYGU7mTwsZc How to set timing with timing light
https://www.youtube.com/watch?v=X0uEMeDVxaA  How to set timing with a vacuum gauge

How are you determining that it is idling fast, with a tachometer or by the way it sounds?  Use a tachometer to determine that, if you are not.  Fast idle is bad carb adjustment, a vacuum leak or advanced timing.  Any one of those can also make it hard to start.  Stock cam?



Lawrenceville, GA

Six volts or twelve volts?  What carburetor?  Have you tried setting the ignition timing with a timing light?  As has already been brought up, how old is the fuel?  Checking the percent ethanol content in the current load of gasoline wouldn't hurt at this point either.

Lorena, Texas (South of Waco)

The reason I say it will not idle slow is cause the fast idle in the carb is advanced. When I pull it back to the stop it will run for a bit and than die. The fuel in it is new tank has been cleaned out. It's a 12 bolt system. I will try messing with the dizzy some. But why does it has so much trouble overcoming the compression when the choke is closed? Is it putting extra fuel on top of the pistons?

Ray, just to clarify things, the timing you describe here is the "cam" timing.  What the other fellows here are describing is the "ignition" timing.  They are two separate things.


Mark

1956 Mercury M100
1955 Ford Fairlane Club Sedan
Delta, British Columbia