Smoking after idle

[Soulreaver0102]

I had a Mack dump truck that would smoke after it idled for a little bit. If you left it idling anywhere for 5 mins or so you’d see little bit of smoke. Then when you started driving it it would smoke bad for min or 2 going through gears until you get into higher gears. Company shop finally seen it and had it check. Small crack in front head that would seep oil into chamber when it was idling. It would load that cylinder with oil then when you got going it would burn it off. And be fine as your driving. But let it idle and your in for a smoke show. Lol. Hope that’s not your issue but that’s what I’ve seen happen.