CWF

Changed all my gas lines a little while ago on my work van, and the 350 now runs like crap. I did a complete tune-up, even installed a new vacume advance. There's no power. It's in an old 85 C-30 with over 300,000 miles, which before ran great.

If I put my hand over the intake it seems to idle just fine, but with my hand off it sputters and shakes. Seems to be starving for gas. It's the reason I put in a new vacuum advance. It doesn't seem to be advancing the dwell. Could a piece of rust have gotten past the gas filter?

Is it time to rebuild the carb, or is it something else? I'm not familiar with the gizmo that replaced the points in the distributor. I'm guessing. Any help?

By the way all the emission junk was pulled long ago, and there's no vacuum leaks. My mind says rust got in the carb because of the line change.

Grandpa CWF