harpoonalt
Gold Member
I was taught (Dad) to always let an engine idle down for a minute or so before I shut it off. My neighbor will be at full throttle, drive over to talk and just shut it off. He starts it back up the same way. Engine racing and off he goes. What's the reason for letting it idle down before shutoff? I thought it had something to do with dumping unburned fuel into the engine but I can't remember. I told him it wasn't good for his motor but he wants to know why and I honestly don't remember.