Idle surges and the engine won't rev past about 4k rpm. Car sat for about a year, so I drained the old gas and replaced all the rubber fuel lines, fuel filters (primary and secondary), and the mechanical fuel pump since it was leaking as well. Eliminated vaccuum leaks and replaced intake manifold gasket and carburetor gasket/insulator.
Funny situation: it acts this way all the time, unless you remove the lid from the air filter housing. If you do that, engine runs fine all the way to redline, but idle still surges, although not as bad. I've come to the conclusion that with the lid off, its sucking in just enough extra air to properly balance the air/fuel mixture. Or at least get it close enough to run correctly. I'm thinking I can lean out the mixture if I can figure out how to do it.
Carb rebuild time or just adjustments needed? Did this before and after fuel system refreshing.
Opinions welcome.
thanks
Kyle