[scotricker]

The engine, I believe, is a 235 straight 6 from a 1960 truck, with a very simple one-barrel carb.

It's been running fairly well until recently. Just this past week it started acting funny.

Awhile ago, I went through the carburetor and put in new gaskets, etc. And it ran just fine after putting it all back together.

Recently, it acts like it is running out of gas.

It starts easily with full manual choke, then idles nicely with the choke pushed in to the off position.

If I abruptly push the gas, it dies. But I can get it to rev up if I tap-tap-tap the gas. It revs better with the choke on.

It all feels like fuel starvation, but I'm not sure from where. Today I replaced the in-line fuel filter, but no change in symptoms.

I don't think it's the fuel pump, either, because the symptom of over lean is instant when the gas pedal is pushed.

I thought one of the cylinders might not be firing, but all the plugs look just fine.

I guess it's the carb. But am not sure what to check next or what to do.

Please let me know if you have any diagnostic advice.

thanks,