If you haven't deleted your PCV yet...

Discussion in 'SN95 V6 Mustang Tech' started by DanM, Dec 22, 2003.


  1. DanM

    DanM Founding Member

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    ....this might change your mind. Pulled my upper off for a P&P this afternoon. It's largely in good shape, except for the #6 long runner. Check the last pic. This is from an early-year 2000, so it's got the hideously-overactive PCV (aka "turbo-suck").

    Nothing really spectacular, just thought you folks might wanna see some pics. :) Surprisingly, the #6 plug was actually pretty clean, not fouled at all.

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  2. 98CobraClone

    98CobraClone New Member

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    ewwwwwwwwwww

    mine looks the same way......I hate it, but with it being my daily driver, I don't have much time to go out and clean her up. It's been so cold here lately that I actually took the car somewhere to let someone else change the oil......what was I thinking?????

    What will clean that stuff out? I know I have a little gunk on the blade of my throttle body and all through the intake. Carb/intake cleaner won't get all that stuff out, and it's a major PAIN to pull the intake again
     
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  3. DanM

    DanM Founding Member

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    Any brand-X engine degreaser should do a pretty good job at nuking it. Any kind of petroleum-based solvent. Not sure how you'd clean it without removing it from the car, though. :)
     
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  4. 30AnnivStang

    30AnnivStang Founding Member

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    you gonna polish the inside and outside dan?
     
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  5. marvinmycat

    marvinmycat Founding Member

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    I've got one question about that last pic. Is your intake cracked, or is that some massive pubic hair that dropped half way into the intake? :shrug:
     
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  6. DanM

    DanM Founding Member

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    That'd be my dog. :) I thought it was a crack at first too.
     
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  7. hiattwl

    hiattwl New Member

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    :lol: :nice:
     
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  8. BABstangV6

    BABstangV6 Smater than the average bear!

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    how many miles since you last checked it dan?
     
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  9. DanM

    DanM Founding Member

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    Only 30k miles. Pretty heavy buildup for only 30k.
     
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  10. 98CobraClone

    98CobraClone New Member

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    that's definitely not dog hair. Now, what have you been doing with your intake????????

    you lonely, lonely man
     
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  11. DanM

    DanM Founding Member

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    Oh it's dog hair alright (covered in oil), just like everything else I own, covered in that little bastard's fur :). Half terrier, half retriever, I think. :)

    Apparently you're not too well-endowed, because those ports are waaay too little for my equipment, dude. :)
     
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  12. hiattwl

    hiattwl New Member

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    once again :lol: :nice:
     
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  13. SpectorV

    SpectorV Founding Member

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    what year is that car? if its a 99-00 i can understadn it, i dont have much of any blow by in my 01 putting breathers on can not be teh best thing in the world either.
     
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  14. 00StangV6Coupe

    00StangV6Coupe Founding Member

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    What is this PCV and what does it do, etc etc. I have an 00 so I was curious as to what's going on since I'm in the dark a bit as to what you guys are talking about.
     
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  15. GREENBIOCH

    GREENBIOCH Founding Member

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    It is the hose that comes out of your drivers side rocker cover. It recirculates the burnt oil fumes and other crap that gets burned in your engine back to the intake to get burnt again. It is an emissions thing but it fugs up the intakes with that black ****. it was a really big problem with the early split port engines because it was causeing some sort of knocking or something. Alot of people delete it out and just put a little breather cap on the rocker cover to allow the gases to escape.
     
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  16. marvinmycat

    marvinmycat Founding Member

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  17. DanM

    DanM Founding Member

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    SpectorV, the car is an early 2000 (said in my original post), so it's one of the ones with the severe problem. There's nothing wrong with putting a breather on, so long as you can live with the smell (worse if you run the AC a lot).

    00StangV6Coupe, PCV = Positive Crankcase Ventilation.

    Basically, when your engine is spinning, you get peaks of high and low pressure in the bottom end of your engine. This is bad - if the pistons are having to fight positive pressure in the bottom end, it robs you of power. The answer is just to open up the bottom end (ie, don't seal it air-tight) so that the pressure doesn't build up. The hole on your valve cover is to vent the bottom end of the engine. Engines have had ventilated crankcases for almost all of history, but up until the 60s/70s, they'd always just be vented into the air with a breather cap.

    Since the emissions laws got tighter, you can't vent that into the air any more. There's all kinds of nasty oil fumes and spent crap floating around in there. Very bad for pollution. So for the last 3 decades, the government has required that those fumes not be allowed to escape into atmosphere, so manufacturers recycle them back into the intake. There it gets burned cleanly.

    If you have a poorly designed PCV system (like my POS Mustang), or a bad PCV valve, it can suck oil into the intake. Passing all those nasty oil fumes into the chambers to be burned hurts power a bit (I must stress a BIT - might rob you of 0.5hp, really not worth worrying). You're fine removing the PCV system, just be aware that depending on your local rules, you may or may not pass emissions, and your conscience may have issues with venting all those bad fumes into the air. :)
     
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  18. marvinmycat

    marvinmycat Founding Member

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    I personally vent fumes all the time!
     
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  19. GREENBIOCH

    GREENBIOCH Founding Member

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    That's a problem you should have looked at! :D
     
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  20. SpectorV

    SpectorV Founding Member

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    they are fine to use but it stinks bad... sitting at idle with the air, vent or sometimes just sitting there. other than that htey are good, i had them on my car but took them off due to the smell. I wish i coudl keep them stupid engineers .....
     
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