Q: My 1981 Toyota 22R needed a new fuel pump and gas lines. With the new parts installed, the engine ran fine after the mechanic covered the carburetor with a rag. This caused the engine to cough.

I have been working on my 1966 Chevy Nova II. I recently replaced the fuel pump (mechanical), all filters, all spark plugs and liquids. I’ve also tried tuning the idle speed and idle mixture screws on ...