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what is the best way to clean upper intake off of the car

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    #1

    what is the best way to clean upper intake off of the car

    Hi,
    When I swapped the throttle body last week, I looked inside and noticed the upper intake was dirty and caked up kind heavy. This was probably due to a non attached PCV valve for a long while. I am going to replace the fuel injectors this weekend and replace any vacuum hoses that need it.

    What would be the best way to clean the upper intake while it is off of the car?

    While it is off, what is the best way to clean the lower intake with it still on the motor?
    It is 1991 Grand Marquis.

    I thank you,
    Mike
    90 Colony Park LS with GT 40 heads and intake. HO cam, 65 MM TB, 67 MM EGR spacer. Has a 75 MM Pro Flow mass air sensor. Borla XS mufflers. 3L55. Shift kit, 2000 stall Tq convertor...Bilstein shocks, front and rear sway bars.
    90 Colony Park LS 64,000 miles all original. 3L55 tow package....front and rear sway bars.
    91 Grand Marquis GS....HO motor..Bilstein shocks poly bushings and police swaybars. This one handles the best.
    70 Torino Squire with M code 351 Cleveland 3.00 has Magnaflow mufflers. Hidden headlights and power windows. All original
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    #2
    For the upper intake, I would degrease the hell out of it and hit the ports with a pressure washer - taking care to avoid the edges of the coated surfaces. Then dry thoroughly with a blowgun before reinstalling. Obviously, removing all of the rubber hoses is advisable in this case.

    The lower intake is tricky to clean effectively without removing it. You don't really want to release gunk/debris down into the intake ports on the heads. You might try cleaning with a rag/small brush while constantly running a shop vac very close to the spot you are cleaning.
    Last edited by RyPow; 09-19-2014, 10:47 AM.
    RyPow
    1987 LTD Crown Victoria LX sedan - The "Sand Box" - 73K, towing package
    1987 LTD Crown Victoria LX Tutone Tudor - '96 Explorer 5.0 + 5spd swap in the works
    1985 Lincoln Town Car Cartier - previously owned by "navguy12" from thelincolnforum.net
    2007 Lincoln Town Car Signature Limited, 102k, daily driver
    2006 Mercury Grand Marquis LS, 115k, winter beats
    1977 Lincoln Continental Town Car, 42k
    2012 F-150 5.0L 4x4, HD payload pkg (towing/hauling)
    2015 Toyota RAV4 XLE AWD (better half's)

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      #3
      This shit.



      Seal one end off and fill it up with this stuff, come back a few days later, empty it into a bucket (you can reuse it), then hose out the intake. It will be brand new inside. If it's really bad light scrubbing may be needed.

      Has the lower intake gaskets been done recently? If not there probably due anyways, so you may as well pull the lower off and clean it too.
      2020 F250 - 7.3 4x4 CCSB STX 3.55's - BAKFlip MX4
      2005 Grand Marquis GS - Marauder sway bars, Marauder exhaust, KYB's
      2003 Marauder - Trilogy # 8, JLT, kooks, 2.5" exhaust, 4.10's/31 spline, widened rear's, metco's, addco's, ridetech's 415hp/381tq
      1987 Colony Park - 03+ frame swap, blown Gen II Coyote, 6R80, ridetechs, stainless works, absolute money pit. WIP

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        #4
        Originally posted by RyPow View Post
        For the upper intake, I would degrease the hell out of it and hit the ports with a pressure washer - taking care to avoid the edges of the coated surfaces. Then dry thoroughly with a blowgun before reinstalling. Obviously, removing all of the rubber hoses is advisable in this case.

        The lower intake is tricky to clean effectively without removing it. You don't really want to release gunk/debris down into the intake ports on the heads. You might try cleaning with a rag/small brush while constantly running a shop vac very close to the spot you are cleaning.
        +1 That's what I did with the intake for my 4.0L. I Purple Power'd inside and out; and then hit it with a wire brush. Finished it with a power spray session and painted it. The inside had a thick oily film though, no chunks.

        Packman

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