Idle too long? Burnt oil smell

[Sonicsunspot]

2018 Gen 2. Just hit 100k miles. Waiting on the wife the other day, well of course she took about 45 minutes longer than planned. Anyway, truck idled for 45 minutes. As we left we got a very strong burnt oil smell. Like oil dripping on exhaust pipe type smell (had those before!). Happened again about 10 minutes later. I thought for sure I let it get too hot and cracked a seal or something.

Now, several days later it hasn’t happened again.

Any thoughts? I have seen threads about white smoke etc after long idle time but not oil leaks.

 

[smurfslayer]

did you have service recently?

 

[Sonicsunspot]

Not really… Nov 8th about 3k miles back. So I don’t think it’s a sloppy maintainer issue.

 

[FordTechOne]

Idling creates a significant amount of water, which then pools in the low parts of the exhaust. As it starts to boil off it takes carbon buildup in the exhaust with it, creating steam and an odor.

 

[Space Ghost]

every now and then i get a faint burning oil smell, never consistent and my dipstick is always where i filled it to.

 

[tlrmade]

Mine did this when installing a sync update one time. Run it hard and will burn off and never come back. I was told it was oil in the turbos?

 

[New recaros]

Mine did this when installing a sync update one time. Run it hard and will burn off and never come back. I was told it was oil in the turbos?

You got it, just go faster! Air dilution is the solution!!

 

[FordTechOne]

Mine did this when installing a sync update one time. Run it hard and will burn off and never come back. I was told it was oil in the turbos?

No. Failed turbo seals would cause smoke at times and oil consumption.

 

[Old-Raptor-guy]

Has the truck had phasers replaced? I see a few driver's side valve covers with a crack that leaks AFTER phasers have been done.

The valve covers stick to head and if not removed carefully the driver's side can crack. Never seen a passenger side with a crack.

I see other leaks, but that is the one that sometimes has a smell complaint with it.

 

[Sonicsunspot]

That’s interesting - if It was a cracked valve cover would the leak be fairly obvious? I have gone over the engine best I can with but see no signs of any leaks. Plus it hasn’t had the oil smell in recent days.

I suspect FordTechOne’s explanation may be it.