WintrSol wrote:pmhearns12 wrote:OK so now I feel like a real heel, lol. I noticed a small 'ticking' sound, almost like a loose piece of thin metal vibrating and touching something, is this ping and or knock? It went away once the motor was warm, also, time to really get my carbs synced again and or adjust fuel screw, I'm steadily getting more and more pops again from both jugs, as well as the front header is blueing slightly. :/
Pre-ignition knock occurs when an engine is hot and under load, not when cold. If an engine meant to run 87 octane in pinging, either the fuel is really not 87, or there is carbon build-up getting hot and acting like a glow plug, igniting the fuel before the spark. That said, the engine will run better on pure gas, just because of the way it burn as compared to that with ethanol mixed in, especially if the amount is more than 10%.
Your ticking sound, when cold, is probably the lifters.
What's there to do about that? Aren't the adjustments hydraulically controlled?