Ford NAA wont start

RonaldK

Member
I have been working through issues for some time. I installed a new carb and most of the ignition system. When I first put in new spark plugs it fired right up. I had loosened the distributor prior to starting, so I turned off the engine and tightened the distributor. It acts like it will start and then wont. There is gas in the carb and I have been trying to adjust the timing, but I cant get it to start. Any suggestions?
 
One suggestion is to check the terminal on the side of the distributor that the primary coil wire connects to. That insulator can go bad and short the terminal to ground.
 
You say you have spark at the plugs. If you mean a nice strong spark, then it probably is a carb or fuel issue. Loosen the screw in
the bottom of the carb and see how strong the flow is. It should be strong and steady. If it dribbles, you have a fuel flow issue,
which could be anywhere from the tank to the carb. To trace, start at the bottom/carb and move up each connection, one at a time,
turning the sediment bowl off and on in between each test.
 


Are the spark plugs getting wet? If it doesn't start after cranking for five seconds they should have gas on them.
 
(quoted from post at 18:46:06 07/12/20)

Are the spark plugs getting wet? If it doesn't start after cranking for five seconds they should have gas on them.

No. I wondered about that. There is gas in the carb. Also I tried starting fluid and still no ignition.
 
(quoted from post at 18:11:47 07/12/20) You say you have spark at the plugs. If you mean a nice strong spark, then it probably is a carb or fuel issue. Loosen the screw in
the bottom of the carb and see how strong the flow is. It should be strong and steady. If it dribbles, you have a fuel flow issue,
which could be anywhere from the tank to the carb. To trace, start at the bottom/carb and move up each connection, one at a time,
turning the sediment bowl off and on in between each test.

Thanks for the suggestion. I had already checked the flow and it is strong. I guess that something is preventing the gas to get to the cylinders. When I crank the starter for a short while, gas is dripping from the carb when the air intake is off.
 
(quoted from post at 04:56:54 07/13/20)
(quoted from post at 18:11:47 07/12/20) You say you have spark at the plugs. If you mean a nice strong spark, then it probably is a carb or fuel issue. Loosen the screw in
the bottom of the carb and see how strong the flow is. It should be strong and steady. If it dribbles, you have a fuel flow issue,
which could be anywhere from the tank to the carb. To trace, start at the bottom/carb and move up each connection, one at a time,
turning the sediment bowl off and on in between each test.

Thanks for the suggestion. I had already checked the flow and it is strong. I guess that something is preventing the gas to get to the cylinders. When I crank the starter for a short while, gas is dripping from the carb when the air intake is off.

If you crank for five seconds or more without it starting there is gas in the air in the manifold which gravity will bring back down. This means that the gas is getting close but not quite there. Are you using the choke?
 
What's puzzling, is that it started right up when you put new plugs in, then when you went to tighten the distributor it won't start. Someone asked if the plugs were wet, are they? What do they look like? Are you sure the firing order is correct? 1-2-4-3. Is the little clip for the rotor there?
 
(quoted from post at 09:30:07 07/13/20) What's puzzling, is that it started right up when you put new plugs in, then when you went to tighten the distributor it won't start. Someone asked if the plugs were wet, are they? What do they look like? Are you sure the firing order is correct? 1-2-4-3. Is the little clip for the rotor there?

I have the correct firing order and the clip is on the rotor shaft. The plugs are not wet. They are try with a small covering of carbon that I can wipe off with a finger. The only thing I can figure out is that something is either blocking the nozzle in the carb or in the intake manifold and running the engine caused the blockage. I think my next step may be to take apart the carb and clean both nozzle lines.
 
(quoted from post at 09:52:56 07/13/20)
(quoted from post at 09:30:07 07/13/20) What's puzzling, is that it started right up when you put new plugs in, then when you went to tighten the distributor it won't start. Someone asked if the plugs were wet, are they? What do they look like? Are you sure the firing order is correct? 1-2-4-3. Is the little clip for the rotor there?

I have the correct firing order and the clip is on the rotor shaft. The plugs are not wet. They are try with a small covering of carbon that I can wipe off with a finger. The only thing I can figure out is that something is either blocking the nozzle in the carb or in the intake manifold and running the engine caused the blockage. I think my next step may be to take apart the carb and clean both nozzle lines.


You say that you have gas dripping from the carb. I assume that it is dripping out of the intake. In order to get to the intake it has to come out of the main jet. It can't come out of the main jet if "nozzle lines" are plugged. I asked if you are using the choke can you answer that?
 
(quoted from post at 15:22:19 07/13/20)
(quoted from post at 09:52:56 07/13/20)
(quoted from post at 09:30:07 07/13/20) What's puzzling, is that it started right up when you put new plugs in, then when you went to tighten the distributor it won't start. Someone asked if the plugs were wet, are they? What do they look like? Are you sure the firing order is correct? 1-2-4-3. Is the little clip for the rotor there?

I have the correct firing order and the clip is on the rotor shaft. The plugs are not wet. They are try with a small covering of carbon that I can wipe off with a finger. The only thing I can figure out is that something is either blocking the nozzle in the carb or in the intake manifold and running the engine caused the blockage. I think my next step may be to take apart the carb and clean both nozzle lines.


You say that you have gas dripping from the carb. I assume that it is dripping out of the intake. In order to get to the intake it has to come out of the main jet. It can't come out of the main jet if "nozzle lines" are plugged. I asked if you are using the choke can you answer that?
The gas was dripping out of the air intake. I removed the air intake tube from the carb because the carb was flooding. I am using the choke.
 

The carb isn't flooding. A motor is flooded when there is too much raw gas in the cylinders for the plugs to spark. You have no gas. You need to choke it more.
 
Have you tried timing it again? Also you can try holding your hand over the intake to produce more vacuum. Sounds more like timing to me though as I just fought that with one.
 

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