2005-2009 Mustang Information on The S197 {Gen1}

Blue smoke on cold startup - bad valve guide?

Old Jan 7, 2008 | 05:14 PM
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Blue smoke on cold startup - bad valve guide?

I recall there being an extensive thread on blue smoke from the exhaust after a cold startup.

Has anyone found the ultimate cause of this problem? I experienced this condition on my 07 GT and it only has less than 5000 miles on the stock engine. Someone on another Ford board asked around at his dealer and they said it isn't normal and is most likely a bad valve guide.
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Old Jan 7, 2008 | 05:38 PM
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It's funny I was aked the same question by a forum member today and was starting to search for this.

Any good know thread on this subject ?
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Old Jan 7, 2008 | 05:49 PM
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Here's one:
http://forums.bradbarnett.net/showth...ht=smoke+start
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Old Jan 7, 2008 | 07:01 PM
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I to have the same oil smoke and asked the dealer and was told that they did not see it and not wanting to leave the car there over the Xmiss vacation bc the S/C was going in .Well I prob don't have a chance that a claim would be honered now.Even with a TSB.
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Old Jan 8, 2008 | 03:02 PM
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Originally Posted by metroplex
I recall there being an extensive thread on blue smoke from the exhaust after a cold startup.

Has anyone found the ultimate cause of this problem? I experienced this condition on my 07 GT and it only has less than 5000 miles on the stock engine. Someone on another Ford board asked around at his dealer and they said it isn't normal and is most likely a bad valve guide.
Is this on every startup in cold weather?

The V10 in my truck does this but only if started in cold weather after the truck was not allowed to warm up during it's last start. For example, 20 degrees out side, start up the cold truck (sitting for 2 days), move it out of the driveway 20 feet to get it out of the way, turn it off. Then start it back up later (doesn't matter if it's 3 hours or 3 days) on a 20 degree day and I get the blue smoke.

It seems to be a common problem in the Triton truck motors. However, I don't lose any noticeable amount of oil between changes, and if I just let it warm up it goes away completely. So I try to minimize very short trips in cold weather.

Both of our motors are obviously mod motors, but my truck is pre-3V heads. Perhaps our issues are entirely different.
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Old Jan 8, 2008 | 07:34 PM
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Yes, it's only a cold restart where the previous start didn't let the engine warm up enough.
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Old Jan 8, 2008 | 08:57 PM
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Mine does it also, it only happens when I start the car & move it out of the garage then shut it off, then come back later & restart. I have seen others post the same, I wouldn't worrie about it unless it happens often or after a normal running cycle.
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Old Jan 8, 2008 | 10:00 PM
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Same thing here. 3,500 miles on the odo and the only time I get the smoke is after a short start from moving the car out of the garage.
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Old Jan 9, 2008 | 05:41 AM
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This only seems to be a problem for cars that are not driven daily.
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Old Jan 9, 2008 | 05:42 AM
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if i remember right, isnt oil ..blue smoke? or was it anti-freeze? cant remember.
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Old Jan 9, 2008 | 05:49 AM
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I drive the Stang on a daily basis during the spring/summer/fall and don't recall blue smoke most of the time. I started up the stang one day to move it out of the garage for washing the car. The engine wasn't warmed up, and I re-started it about a few hours later to move it back into the garage. That is when I saw a huge cloud of blue smoke. I originally thought it to be steam until I saw the smoke linger and have a bluish tint.

I heard that this isn't normal, and I do not recall seeing any of my other modular Fords doing the same thing. The 4.6L 2V in the Crown Vic has not done this, nor has the 5.4 2V in the E-250.
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Old Jan 9, 2008 | 05:58 AM
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Originally Posted by boduke0220
if i remember right, isnt oil ..blue smoke? or was it anti-freeze? cant remember.

Coolant will blow out white(ish)
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Old Jan 9, 2008 | 06:29 AM
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I sat in a friend's busted up Toyota which had a very bad head gasket leak. Going WOT left a thick plume of white smoke like you would not believe... I think the smoke lingered for well over 1 mile, so the 'Yota looked like an AMRAAM missile.
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Old Jan 9, 2008 | 07:15 AM
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Mine does it. Same as the others.. pull her out of the garage, shut her off, and the next time I start her up (be it 1 hour or 1 week later) she will puff blue smoke. After the second time it happened I just started letting her run for acouple minutes each time.
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Old Jan 9, 2008 | 08:07 AM
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Originally Posted by 69Mach1-409
Mine does it. Same as the others.. pull her out of the garage, shut her off, and the next time I start her up (be it 1 hour or 1 week later) she will puff blue smoke. After the second time it happened I just started letting her run for acouple minutes each time.
That's essentially what those of us on the truck forums have done- just shrug it off.

There is no prescribed fix from Ford, it doesn't seem to be detrimental to performance, and it doesn't seem to affect durability of the motor as many have high mileage trucks with good dependability.

Personally, it doesn't bother me if I know how to prevent it from happening. It's a good excuse to get out and run the truck every once and a while.
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Old Jan 9, 2008 | 07:14 PM
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Originally Posted by Berol
That's essentially what those of us on the truck forums have done- just shrug it off.

There is no prescribed fix from Ford, it doesn't seem to be detrimental to performance, and it doesn't seem to affect durability of the motor as many have high mileage trucks with good dependability.

Personally, it doesn't bother me if I know how to prevent it from happening. It's a good excuse to get out and run the truck every once and a while.
I never start the car unless I can fully warm it up.
I've never seen this.
It doesn't sound like a serious problem.
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Old Jan 10, 2008 | 05:30 AM
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I had forgotten this when I posted earlier but I think the fix is an oil sepatator. It may be caused bu oil & condensation in the intake.
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Old Jan 10, 2008 | 08:45 PM
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I was on youtube listening to exhaust clips when I saw this guy's Mustang. For those of you that have never seen it, here it is.

http://www.youtube.com/watch?v=CT4Qj...eature=related

After the blue smoke clears, you'll see the normal white steam.
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