Fuel System: 62 Lark Issues

[drnittler]

For my son's 62 Lark 289 V8, automatic (which used to be my car for 10 years), he is having the following problem. He says the car starts and runs a minute and then quits, it can be repeated start, run, quit. My guess is fuel delivery. He thinks it is the carb. Anyway suggestions and opinions are welcomed. He wants to get this car back on the road and use it for a back up car for work. Thanks for the help.

[rockne10]

In the off chance that you have converted to the Mopar EI, it may need the resistor replaced.

[drnittler]

In the off chance that you have converted to the Mopar EI, it may need the resistor replaced.

It is original equipment

[maxpower1954]

A fuel tank full of rust and debris will often act exactly in this manner - my own personal experience. When was the last time the tank was dropped and cleaned out?

Russ Farris

[rkapteyn]

If the gas cap is not a vented type it will create a vacuum in the tank and the car quits running.
Try to run it without the gas cap and if it keeps running you know what is wrong.
Robert Kapteyn

[Studebakercenteroforegon]

If the gas cap is not a vented type it will create a vacuum in the tank and the car quits running.
Try to run it without the gas cap and if it keeps running you know what is wrong.
Robert Kapteyn

A '62 Lark does not require a vented cap - the tank is vented by a pipe that runs along the inside of the lower trunk opening - very evident when you look for it. Still, one should should inspect this line for possible vending issues.

[drnittler]

He ran the car a few months ago. He drove it his work 50 miles away. (This story was in Turning Wheels a few years ago). I am suspecting that the rubber part of the fuel lines may be a problem. I'll know when I see him.

[Skip Lackie]

Another possible problem is a pin hole in the fuel line, most likely behind the clamp that holds the tube to the frame above the rear axle. I had exactly the same symptoms with a 59 Lark. It was most likely to manifest itself when going above 30 mph or up hill -- when the fuel pump was pulling the most vacuum. It never leaked enough to drip on the ground, but allowed plenty of air to get into the line when the engine was running.

[doug]

My sons Jeep Wagoneer did the same thing. The fuel pickup in the tank was blocked. We could not blow through the fuel line to the tank. Cleared obstruction, all good.