2008 gt pcv system. smoke from pass. side valve cover - Ford Mustang Forum
 
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post #1 of 13 (permalink) Old 07-23-2010 Thread Starter
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2008 gt pcv system. smoke from pass. side valve cover

The car is going in tomorrow to see whats up. I have(seems to me anyway) excessive smoke coming from the passenger side valve cover breather and oil fill breather. Pretty much nothing coming from the drivers side cover breather. Plus what seems to be an intermittent miss(no codes)

I thought the passenger side was the intake side and the drivers side was the exhaust side. If this is true why is it all coming from the passenger side?

On another post I read that getting your valve covers painted/powder coated can cause problems with the pcv system. Seems the high heat from baking the paint on causes something in the cover or covers to malfunction. I tried blowing into the drivers side cover and there was definitely a restriction and it was waaaay easier to get air to come out. Makes me think the passenger side is messed up for sure.

Just need someone to tell me exactly how the 2008 pcv system works. And if there should be nothing coming from the passenger side breathers.


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post #2 of 13 (permalink) Old 07-23-2010
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When you breath the enginge it reverses and everything will come out of the passanger side except when you're under boost which will force the PCV valve in the driver's side cover open.

When the system is sealed, vaccum from the engine opens the pcv valve on the driver's side and that's where the gasses escape from. The design of the system has not changed in the 05-09 models.


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post #3 of 13 (permalink) Old 07-23-2010 Thread Starter
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interesting. Maybe I should go back to the catch can...but not back into the intake with it.

Thanks!!

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post #4 of 13 (permalink) Old 07-23-2010
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The passenger side is always under vacuum.

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post #5 of 13 (permalink) Old 07-23-2010
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Quote:
Originally Posted by dysan View Post
When you breath the enginge it reverses and everything will come out of the passanger side except when you're under boost which will force the PCV valve in the driver's side cover open.
There is no PCV valve in these cars. There is nothing more than a series of baffles on the interior of the driver side valve cover.

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post #6 of 13 (permalink) Old 07-23-2010
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Quote:
Originally Posted by stlwagon View Post
There is no PCV valve in these cars. There is nothing more than a series of baffles on the interior of the driver side valve cover.
The guy who checked it out for me actually stuck his mouth on the tube of the driver's side cover while it was off the engine and blew and sucked on it to check and he was 100% positive that there's a valve built into that tubing. The guy assembles his motors for his 2 dragsters as well as other cars that him and his son race so I trust his knowledge.

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post #7 of 13 (permalink) Old 07-23-2010
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Quote:
Originally Posted by dysan View Post
The design of the system has not changed in the 05-09 models.
Quote:
Originally Posted by stlwagon View Post
There is no PCV valve in these cars. There is nothing more than a series of baffles on the interior of the driver side valve cover.

The design changed in 07. There is no PCV valve in 07 valve covers.

If they play, I spray.
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post #8 of 13 (permalink) Old 07-23-2010
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So there is one in the 08+?

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post #9 of 13 (permalink) Old 07-23-2010 Thread Starter
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Quote:
Originally Posted by stlwagon View Post
The passenger side is always under vacuum.
so what youre saying is I should never see anything coming from the passenger side?

As for the baffles and or valves in the covers...I believe there is something in the drivers side. I blew into the tube and it took air but it was definitely restricted. I sucked and there was no restriction....but when the motor is running....nothing can be seen at all coming from that breather.

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post #10 of 13 (permalink) Old 07-23-2010 Thread Starter
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Ford ran a few tests with their computer and nothing showed up. Compression test on monday.

Maybe its nothing to worry about, just seems weird that theres a hollow sound from the one side of the exhaust...only happens every once in awhile. I'll try to get a video with sound maybe if i can find a camcorder to borrow

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Quote:
Originally Posted by stlwagon View Post
So there is one in the 08+?
Nope, there is not one in 07+. I thought there was one in 05/06, but according to Dysan the powdercoating process destroys it.

If they play, I spray.
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There's not one in my 2005.

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Quote:
Originally Posted by stlwagon View Post
There's not one in my 2005.
There is much less baffling in the 05/06. I just assumed it had a PCV valve to compensate. I had tons of blowby with my powdercoated 05/06 style valve covers. Mine is an 07. I had to go back to 07 style.

If they play, I spray.
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