Is it hard to start a Vortec rough idle?
Is it hard to start a Vortec rough idle? On any start after the initial cold start in the morning, it is hard starting. You have to feather the gas a little and it shudders but it will start then you have to give it a little gas or it'll stall. Driving, its fine as long as you are moving. What's the idle RPM on a 99 Vortec? Truck recently had an exhaust manifold replaced. When its cold (as in first thing in the morning), it fires right up and high-idles for a few seconds and runs fine. After the...