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White smoke?
- Thread starter JamesV1
- Start date
.... Is the vehicle still putting out white smoke?
YES:
Not from the ignition cycling
No:
It was likely from the ingition cycling. You must have signaled an injector to dump some fuel into the cylinder while not combusting and it was exhaled on an exhaust stroke
Turbos don't usually cause white smoke. If coolant leaked in and the impeller grabbed it, it would like launch it into the TB and keep causing white smoke, BUT it would notably smell like coolant anyway.
If it was oil, it wouldn't be white smoke, it would be at least slightly blue.
White smoke = coolant or fuel, If you can't smell it, you might have to get really close.
YES:
Not from the ignition cycling
No:
It was likely from the ingition cycling. You must have signaled an injector to dump some fuel into the cylinder while not combusting and it was exhaled on an exhaust stroke
Turbos don't usually cause white smoke. If coolant leaked in and the impeller grabbed it, it would like launch it into the TB and keep causing white smoke, BUT it would notably smell like coolant anyway.
If it was oil, it wouldn't be white smoke, it would be at least slightly blue.
White smoke = coolant or fuel, If you can't smell it, you might have to get really close.
I had a similar issue with my 2022 Explorer ST after it hit about 20K miles. White smoke started to billow out of both exhausts on cold engine starts. I took it to Ford and they discovered oil soaked blades and pooling oil inside exhaust turbine housing. They had to replace both left and right turbo chargers, gaskets, o-rings and filters. It was all covered under warranty. I’ve put about 10K more miles on this vehicle since this repair and all has been fine.
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That sounds like some pandemic-era QC issue if ever I heard one. Glad they replaced it.
Just in case someone finds this years from now and out of warranty - if you're not upgrading turbos, and it's finally available, replacing the old CHRA with new should save you a mint. (IF your snails are good)
Just in case someone finds this years from now and out of warranty - if you're not upgrading turbos, and it's finally available, replacing the old CHRA with new should save you a mint. (IF your snails are good)
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I had this happen as well a year ago. My ST spent a month at the dealership for them to say “Ford considers this normal”. I took it in saying it’s probably the oil leakage in the turbo and all they did was take the exhaust off and fire it up every now and then to observe the belching exhaust. Never went any further than where they unbolted the exhaust plus they scoped the cylinders. All this digging they claimed they did turned up nothing. I kept on them to find the solution and their last ditch effort was to find a reason to call it “normal”. They had two other STs that were doing the same thing, so they took a video, sent it to me and called ford to get the “normal” diagnosis and told me to pick up my vehicle. On the way out I asked them to change the oil and reset the computer just in case the computer learned something that was causing this and it stopped! Now again 9 months later it has started smoking only halfway through an oil change interval and it sounds a little rougher than usual at start. My oil did drop just over half a quart halfway through my oil change interval. I go every 5000km (3100 miles). Not sure if that’s related or dealer under-filled my oil. I have been following these forums and there does not seem to be a concrete reason for this cold start belching of exhaust. It seems common but not common enough to be considered “normal” at all or the symptom to be considered “normal”. Strange there isn’t a TSB for it.
