2024 Mustang GT Light Bluish Puff Of Smoke.

[S650sunshine]

@S650sunshine ..... it appears bluish to me. That would mean oil getting into where it should not be. That said, it may be no big deal at all. My friend had a new Ford Explorer 400 RT (400 HP twin Turbo) it is about 6 months old with about 1500 miles on it. He noticed some smoke under his hood and oil drips on the driveway. He was really worried. It was a flawed valve cover gasket leaking oil onto engine and exhaust. No big deal - covered under warranty. Your tech can do a number to tests to isolate the problem. The whitish smoke that is condensation is white vapor and is quite normal. Bluish puffs are almost always oil - usually internal and NOT normal. Hopefully just a crap valve stem seal or some malfunctioning valve. This should be a no brainer, totally easy issue to deal with by a decent Ford dealer get it to them soon so you'll know.

@Gregs24 ..... happened to a family member too but we aren't talking VW blackish smoke here, right? The question was bluish smoke and in my experience that is oil derived. I bet and hope it's a simple fix.

this was after the car been sitting for around 2hours after driving. Ambient temp around that time is 72degrees, feels like 74, humidity 35%..

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[Gregs24]

this was after the car been sitting for around 2hours after driving. Ambient temp around that time is 72degrees, feels like 74, humidity 35%..

That is not right!

 

[MAT1955]

Not even close!

 

[Ewags81]

Overhead valve seals leaking oil into combustion chamber as it sits???

 

[GrabberB]

this was after the car been sitting for around 2hours after driving. Ambient temp around that time is 72degrees, feels like 74, humidity 35%..

That is considerable worse than the first video you posted. Definitely something wrong. Agree with what others are saying i.e., oil leaking past the valve seals appears to be the issue.
This will probably be a frustrating ordeal however, it can and will be fixed. I would get it in to a competent Ford Service Dept. ASAP.
Keep a cool head and remember Ford is at fault not the dealer.

 

[S650sunshine]

That is considerable worse than the first video you posted. Definitely something wrong. Agree with what others are saying i.e., oil leaking past the valve seals appears to be the issue.
This will probably be a frustrating ordeal however, it can and will be fixed. I would get it in to a competent Ford Service Dept. ASAP.
Keep a cool head and remember Ford is at fault not the dealer.

The first video ford said it’s normal because the engine is through a break in. They checked the codes and run a scan and everything seems normal. The white smoke they still looking into it.

 

[S650sunshine]

Overhead valve seals leaking oil into combustion chamber as it sits???

Idk tbh.

 

[MAT1955]

@Ewags81 ..... yes.

 

[smurfslayer]

The first video ford said it’s normal because the engine is through a break in. They checked the codes and run a scan and everything seems normal. The white smoke they still looking into it.

You’re not paying the service department to pull codes and report them to you, you’re paying them to resolve trouble shoot and resolve a concern which could be serious or could be condensation burning off. My MDH doesn’t do this , but as I mentioned before the ecoboost spews out exhaust condensation regularly. If you were idling just before shutdown it wi generate a Bond movie like ‘smoke screen’.

I don’t see blue myself, but this should be repeatable for the service dept. to analuxe.

 

[S650sunshine]

You’re not paying the service department to pull codes and report them to you, you’re paying them to resolve trouble shoot and resolve a concern which could be serious or could be condensation burning off. My MDH doesn’t do this , but as I mentioned before the ecoboost spews out exhaust condensation regularly. If you were idling just before shutdown it wi generate a Bond movie like ‘smoke screen’.

I don’t see blue myself, but this should be repeatable for the service dept. to analuxe.

I suggested them to take out the cylinder head to check if there’s coolant or oil in there. They won’t take anything apart unless they see what the car does themselves. I sent a video of the bluish smoke and the white smoke. Bluish smoke they determined it was in the break in period. White smoke they haven’t seen it themselves so they will need to see it to determine if they need to inspect the inside.

 

[robvas]

Pull a couple plugs

 

[smurfslayer]

Pull a couple plugs

Yeah, this isn’t hard, you ( they ) just have to TRY. It’s not a lot to ask.

WTF does ‘break in period’ have to do with it? Blue smoke is blue smoke whether it’s at mile 1 or mile 35,999 - it’s an indicator of a component failure in the powertrain, affecting the emissions system.

I’d say push back a little here. Any trained monkey can pull DTC’s and report to an S/A that there’s no codes stored.

FFS.

 

[S650sunshine]

Yeah, this isn’t hard, you ( they ) just have to TRY. It’s not a lot to ask.

WTF does ‘break in period’ have to do with it? Blue smoke is blue smoke whether it’s at mile 1 or mile 35,999 - it’s an indicator of a component failure in the powertrain, affecting the emissions system.

I’d say push back a little here. Any trained monkey can pull DTC’s and report to an S/A that there’s no codes stored.

FFS.

If it’s like everyone said, valve seal etc. will affect the engine performance and will the AFR run lean? What are the symptoms aside from smoke shoot out the exhaust?

 

[Ewags81]

I haven't noticed any sort of smoke out of mine, but it's sitting a lot right now. Last time I had the opportunity to run it, on initial cold start, it fired up with normal authority but about 6 to 10 seconds in had a definite dead hole sort of wobble to it. Cleared up at idle and had no performance issues. I am following this for sure please keep updating.
@robvas Great idea pulling the plugs. Maybe quick fire and shut right off on cold start.

 

[S650sunshine]

I haven't noticed any sort of smoke out of mine, but it's sitting a lot right now. Last time I had the opportunity to run it, on initial cold start, it fired up with normal authority but about 6 to 10 seconds in had a definite dead hole sort of wobble to it. Cleared up at idle and had no performance issues. I am following this for sure please keep updating.
@robvas Great idea pulling the plugs. Maybe quick fire and shut right off on cold start.

I’ll definitely make a separate update post when I get the car back or if they actually find something.

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