• Sign Up! To view all forums and unlock additional cool features

    Welcome to the #1 Explorer ST Forum and Explorer ST community dedicated to Explorer ST owners and enthusiasts. Register for an account, it's free and it's easy, so don't hesitate to join the Explorer ST Forum today!


Smoking on startup after sitting

RacerX33

Member
U.S. Army Veteran
Messages
36
Reactions
35
Points
12
Location
illinois
Vehicle
2024 Ford Explorer ST
In warm temps or cold.... it smokes.
On a warm summer day, what you get is,
no smoke for 5 seconds or so and then the smoke comes pouring out for a while and as
the engine runs for about a minute it dissipates and basically disappears as the engine warms and throttles down..
Has a slightly blue tinge to the smoke or steam....
In winter some of it, maybe a lot of it, is obviously moisture
as evidenced by the huge clouds produced in freezing temps on start up..
Cant prove it but I think a lot of it is steam.
 

BrooseDaMoose

1000 Post Club
Messages
1,523
Reactions
998
Points
162
Location
East Freetown, MA
Vehicle
2020 Explorer ST, Silver Spruce Metalic
In warm temps or cold.... it smokes.
On a warm summer day, what you get is,
no smoke for 5 seconds or so and then the smoke comes pouring out for a while and as
the engine runs for about a minute it dissipates and basically disappears as the engine warms and throttles down..
Has a slightly blue tinge to the smoke or steam....
In winter some of it, maybe a lot of it, is obviously moisture
as evidenced by the huge clouds produced in freezing temps on start up..
Cant prove it but I think a lot of it is steam.
If it has a blue tinge, it’s likely oil. The seal in the turbo could be leaking. While the engine is not running, oil seeps into the turbo. Then when you start it up, it takes a few seconds for the turbo to get hot enough to start burning the oil. That’s how it was explained to me when mine was smoking but it turned out my catch can was full.


Sent from my iPhone using Tapatalk
 

Messages
28
Reactions
7
Points
2
Location
Ontario
Vehicle
2020 explorer st
Welp my ST started doing this today. I am also parked on an incline and I haven't driven the car for about 24 hours. Will try it again tomorrow, with a video. Then probably a new turbo charger in my future. Has anyone had any luck with them just changing out the seals? Or done it themselves? I bet the parts aren't even available.
 

Messages
1,523
Reactions
998
Points
162
Location
East Freetown, MA
Vehicle
2020 Explorer ST, Silver Spruce Metalic
Welp my ST started doing this today. I am also parked on an incline and I haven't driven the car for about 24 hours. Will try it again tomorrow, with a video. Then probably a new turbo charger in my future. Has anyone had any luck with them just changing out the seals? Or done it themselves? I bet the parts aren't even available.
By the time you pay for the parts and labor it’s cheaper to just buy a new turbo. Unless you do it yourself. Not sure Ford even sells the parts to rebuild it. It’s likely all sourced from the aftermarket.


Sent from my iPhone using Tapatalk
 

Messages
13
Reactions
1
Points
2
Location
Edmonton
Vehicle
2022 Explorer ST
I had this issue for a bit and it spent a month at dealership with no resolution. Just Ford engineering saying it’s normal because a few others in the shop showed the same symptom. I had them do a reset on the computer and I put in a dose of injector cleaner. The winter passed and the next spring it did it a few times but not even nearly as bad. I was running mostly 87 octane at the time. This spring I took it to a different dealership ( 3rd one ) and had them take a look as much as they can after a few days they came up with no indications of the exhaust belching and I had not seen it whatsoever. I had started doing my own oil changes every 5000km ( whatever it is in miles for my American friends ) because the dealerships had been screwing them up. Anyways last dealership did another reset and this summer I had not seen any evidence of this issue. I also switched to 91 octane because the price dropped significantly all because our communist government removed their oppressive carbon tax in a ploy to get elected again. Also I have been doing oil samples every oil change and fuel dilution has been very high even after such a short interval and minimal idling periods. The resets and all I’m doing seem to have mitigated this issue. Don’t know if this helps but it might be worth a shot before diving into turbo replacements and all the things I have heard getting replaced
 



Top