My car had been sitting for about 7 years and I just got it running (somewhat). I put a new carb on it, rebuilt sediment bowl and new plugs. I have 1 coil that's weak in sound. It will only run if I hold the choke closed all the way. Otherwise it starts, spits out the carb and dies. I'm thinking I might have a sticking valve in one or more cylinders which is leaving it backfire out the intake valve and out the carb. I thought I might dump some Marvile Oil into the cylinders or add to the gas but not sure. I believe the motor has been redone at sometime before the previous owner owned it. It's too clean for an original and I know the transmission has been reworked for sure. I recently purchased a distributor for it and am waiting for it to come in. Any help would be appreciated.
If you have to hold the choke closed you have a fuel flow issue. Probably one of the following:
1. Not enough gas in the tank
2. Clogged fuel strainer
3. Rust in the gas tank
4. Float setting too low
5. Someone added a fuel filter in the fuel line
The sound of a coil means nothing. Every coil sounds different.
Do a compression test. Even if it's just holding your thumb over the plug hole it will confirm your stuck valve theory.
Take your spark plugs out and just look. You can see if the valves move or not. Like the guys say above get a compression checker and use it.
You should never never never let any motor sit for 7 years with out turning it over ever so often.
Bob , did you try to open the spray needle /