I have a 78 550K, recently been having some starting problems. Cranks over fine, sometimes will start, sometimes not at all. Wondering about the choke. I have always had to use the choke for cold starting, even when ambient temps are high. I recently put a new OEM choke cable on, which seemed to work fine. But when i put choke on and start, when cranks runs at very low rpm and sluggish idle for sometimes 15-20 seconds, then engine speed goes up as per normal while choke on. Shouldn't it crank with increased rpm immediately? Carb is adjusted for stock, 1 1/2 turns out on mixture screws, never smell gas. Any advice appreciated.
