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Discuss Spark Plugs in the alt.auto.mercedes forum at Car Dealer Forums; Can anyone enlighten me on how to change the plugs on 1997 E320 3.2L 6cyl ...
  1. #1
    chasarthur@earthlink.net
    Guest

    Default Spark Plugs

    Can anyone enlighten me on how to change the plugs on 1997 E320
    3.2L 6cyl engine. I live in the Virgin Islands so I am on my own with
    no
    MB Mechanics. Anything will help.



    › See More: Spark Plugs

  2. #2
    -->> T.G. Lambach
    Guest

    Default Re: Spark Plugs

    I've done this job on this model. One first needs to decide on the new
    spark plugs.

    The specification is: Bosch F 9 DCO or Champion C 12 YCC, both gapped to
    ..032" (8mm). I chose to "upgrade" to Bosch 4301 Platinum 2 plugs which
    have two preset (no gapping adjustment needed) grounding electrodes.

    While you're at it a new air filter element may as well be installed.

    Then one needs a spark plug socket to fit the plugs and an extension for
    your socket set as the plugs are about 4" inside the cylinder head. Also
    needed is a large and 10" +/- long flat blade screwdriver and metric
    allen wrench to remove the allen bolts from the spark plug cover on top
    of the cylinder head. A torque wrench to 20 ft lbs would be good as well.

    The right side of the car has the engine air filter and MAS (mass air
    sensor). The MAS has two snaps to the air filter box. Unsnap them and
    wriggle the MAS out of the connection. Follow the air duct to to top of
    the motor, toward the rear of the car is a hold down nut; remove it and
    don't lose it. Follow the duct to the left side to its attachment point
    to the throttle body where there's a large clamp with a slotted clamping
    screw. Use the long flat blade screw driver - from the front, put it
    UNDER the arched intake runners to reach the clamp screw, loosen the
    clamp. You can now lift, from the right side, the air duct off the top
    of the motor and lay it, upside down, to the left.

    Use the metric allen wrench to loosen, NOT remove, the ten or so allen
    bolts from the spark plug cover. Lift it off keeping it level enough so
    the bolts don't fall out (their lengths differ). There's also a slip
    into place wire cover on the front left side that just lifts out. In
    front of you are three coils at #2, #4 & #6 and three connectors at #1,
    #3 & #5.
    The connectors pull off their spark plugs the coils' mounting screws
    must be removed to access their spark plugs. (These screws are 4 x 30 mm
    so if one breaks, that's the needed size.) Suggest you mark each w/ its
    cylinder # before removing it so there's NO mistake upon reassembly.

    Remove the old plugs and install the new ones, torque to 20 ft lbs only.

    Then reattach the three coils (hold the coil tight to the head when
    installing its screw) and three connectors, check that all connectors
    are seated and reinstall the spark plug cover, the wire shield on the
    left side, the air duct. Tighten the air duct's clamp to the throttle
    body and the air duct's hold down nut on top of the motor.

    The air box has about six snaps to be undone so the filter can be
    changed. Unsnap them and remove its top. The paper filter is nested into
    the bottom half. (Don't try to reuse the air filter element, small
    amounts of dirt can contaminate the MAS.) Remove it and any debris
    that's under it. Install the new filter, snap the box together. To
    reunite the MAS to the air box moisten its "O" ring with a bit of water
    to ease the insertion effort. When its joined snap both snaps.

    Done, figure two hours work given the right tools.

    Questions?





    --

    2008 T.G.Lambach. Publication in any form requires prior written
    permission.

  3. #3
    El Tico
    Guest

    Default Re: Spark Plugs



    "-->> T.G. Lambach <<--" <"T.G. Lambach at NoHamorSpamcomcast.net"> wrote
    in message news:5ICdneieeMAr4kDanZ2dnUVZ_hGdnZ2d@comcast.com. ..
    > I've done this job on this model. One first needs to decide on the new
    > spark plugs.
    >
    > The specification is: Bosch F 9 DCO or Champion C 12 YCC, both gapped to
    > .032" (8mm). I chose to "upgrade" to Bosch 4301 Platinum 2 plugs which
    > have two preset (no gapping adjustment needed) grounding electrodes.
    >
    > While you're at it a new air filter element may as well be installed.
    >
    > Then one needs a spark plug socket to fit the plugs and an extension for
    > your socket set as the plugs are about 4" inside the cylinder head. Also



    Hey Amigo, I have a brand new set of spark plugs used less than 100 miles,
    I swear... They are still in excellent condition, These are "two heads
    platinum spark plugs" for C230 - E320. They should fit well. The reason
    I don't use them any more because I switched to Iridium spark plugs. I'll
    sell them to you at 1/2 the price I paid for. I do not see much different
    between the two types in terms of performance, for me it doesn't make
    sense to put them back in... I just want to get some money back.. You can
    ask me question on how to change them if you like. Let me know if you
    like to buy them from me, I will ship them to you by mail or UPS. I have
    a paypal account, I am in the NW of US.



    Regards,

    El Tico.





  4. #4
    -->> T.G. Lambach
    Guest

    Default Re: Spark Plugs

    Also, raise the hood to its most open position by releasing each hood
    hinge catch so hood goes to vertical position.
    --

    2008 T.G.Lambach. Publication in any form requires prior written
    permission.

  5. #5
    Dr_Chino
    Guest

    Default Re: Spark Plugs

    On 16 mar, 18:22, "-->> T.G. Lambach <<--" <"T.G. Lambach at
    NoHamorSpamcomcast.net"> wrote:
    > Also, raise the hood to its most open position by releasing each hood
    > hinge catch so hood goes to vertical position.
    > --
    >
    > 2008 T.G.Lambach. Publication in any form requires prior written
    > permission.


    good point
    6th cilinder its hard to work

  6. #6
    Dr_Chino
    Guest

    Default Re: Spark Plugs

    On 16 mar, 17:19, "El Tico" <saroman0...@gmail.com> wrote:
    > "-->> T.G. Lambach <<--" <"T.G. Lambach at NoHamorSpamcomcast.net"> wrote
    > in messagenews:5ICdneieeMAr4kDanZ2dnUVZ_hGdnZ2d@comca st.com...
    >
    > > I've done this job on this model. One first needs to decide on the new
    > > spark plugs.

    >
    > > The specification is: Bosch F 9 DCO or Champion C 12 YCC, both gapped to
    > > .032" (8mm). I chose to "upgrade" to Bosch 4301 Platinum 2 plugs which
    > > have two preset (no gapping adjustment needed) grounding electrodes.

    >
    > > While you're at it a new air filter element may as well be installed.

    >
    > > Then one needs a spark plug socket to fit the plugs and an extension for
    > > your socket set as the plugs are about 4" inside the cylinder head. Also

    >
    > Hey Amigo, I have a brand new set of spark plugs used less than 100 miles,
    > I swear... *They are still in excellent condition, These are "two heads
    > platinum spark plugs" for C230 - E320. *They should fit well. *The reason
    > I don't use them any more because I switched to Iridium spark plugs. *I'll
    > sell them to you at 1/2 the price I paid for. *I do not see much different
    > between the two types in terms of performance, for me it doesn't make
    > sense to put them back in... I just want to get some money back.. *You can
    > ask me question on how to change them if you like. * Let me know if you
    > like to buy them from me, I will ship them to you by mail or UPS. *I have
    > a paypal account, I am in the NW of US.
    >
    > Regards,
    >
    > El Tico.


    Iridium?
    how they work?
    i pass from Bosch copper to Champion Platinum Power
    and works better
    thanks

  7. #7
    El Tico
    Guest

    Default Re: Spark Plugs


    "Dr_Chino" <xtremenergy@gmail.com> wrote in message
    news:79cbfd31-2a02-4ebf-97e6-46f9f76818d0@f63g2000hsf.googlegroups.com...
    On 16 mar, 17:19, "El Tico" <saroman0...@gmail.com> wrote:
    > "-->> T.G. Lambach <<--" <"T.G. Lambach at NoHamorSpamcomcast.net">
    > wrote
    > in messagenews:5ICdneieeMAr4kDanZ2dnUVZ_hGdnZ2d@comca st.com...
    >
    > > I've done this job on this model. One first needs to decide on the new
    > > spark plugs.

    >
    > > The specification is: Bosch F 9 DCO or Champion C 12 YCC, both gapped
    > > to
    > > .032" (8mm). I chose to "upgrade" to Bosch 4301 Platinum 2 plugs which
    > > have two preset (no gapping adjustment needed) grounding electrodes.

    >
    > > While you're at it a new air filter element may as well be installed.

    >
    > > Then one needs a spark plug socket to fit the plugs and an extension
    > > for
    > > your socket set as the plugs are about 4" inside the cylinder head.
    > > Also

    >
    > Hey Amigo, I have a brand new set of spark plugs used less than 100
    > miles,
    > I swear... They are still in excellent condition, These are "two heads
    > platinum spark plugs" for C230 - E320. They should fit well. The reason
    > I don't use them any more because I switched to Iridium spark plugs.
    > I'll
    > sell them to you at 1/2 the price I paid for. I do not see much
    > different
    > between the two types in terms of performance, for me it doesn't make
    > sense to put them back in... I just want to get some money back.. You
    > can
    > ask me question on how to change them if you like. Let me know if you
    > like to buy them from me, I will ship them to you by mail or UPS. I have
    > a paypal account, I am in the NW of US.
    >
    > Regards,
    >
    > El Tico.


    Iridium?
    how they work?
    i pass from Bosch copper to Champion Platinum Power
    and works better
    thanks



    Good for you. They works the same way as your regular plug, only they
    withstand higher heat.





  8. #8
    Tiger
    Guest

    Default Re: Spark Plugs

    Iridium is good... they last alot longer. Please remember factory plugs
    should last 100.000 miles. These plugs are not copper.

    Platinum single electrode is okay substitute. I don't recommends putting
    anything other than factory plugs.

    If the factory plugs comes with two electrodes, then you can put two
    electrodes in or equivalent single electrode oif the same grade... do not
    downgrade.

    I don't remember what year MB start to use these long lasting plugs...
    whatever it is, these plugs are not every year tuneup parts. Even copper
    plugs on older cars can last 2 or 3 years without a problem. I would say
    roughly 30,000 miles.



  9. #9
    Dr_Chino
    Guest

    Default Re: Spark Plugs

    On 18 mar, 18:13, "Tiger" <tiger0...@hotmail.com> wrote:
    > Iridium is good... they last alot longer. Please remember factory plugs
    > should last 100.000 miles. These plugs are not copper.
    >
    > Platinum single electrode is okay substitute. I don't recommends putting
    > anything other than factory plugs.
    >
    > If the factory plugs comes with two electrodes, then you can put two
    > electrodes in or equivalent single electrode oif the same grade... do not
    > downgrade.
    >
    > I don't remember what year MB start to use these long lasting plugs...
    > whatever it is, these plugs are not every year tuneup parts. Even copper
    > plugs on older cars can last 2 or 3 years without a problem. I would say
    > roughly 30,000 miles.


    Thanks Tiger
    part of my problem was my car (w140 1993 300SE) wasnt original plugs,
    local MB dealer (list) uses Bosch F8 !! copper electrode, so it sucks
    i ask for Bosch platinum even for import, they cant do it for me.
    thats why i choose on Champion from a good friend that owns a MB.
    i have read about Itrium but not about iridium spark plugs on street
    cars.

    now i note a difference, works better, but i still think im not using
    "the best" sparkplug

    when your local dealer have wrong info youre lost!!!

    best regards

  10. #10
    Wan-ning Tan
    Guest

    Default Re: Spark Plugs

    I do not remember the term MB uses. The 96 C280 we own uses the Bosch
    Super copper (factory plug). I tried to upgrade to Bosch platinum but
    the engine misfired a lot. It turns out that its ignition design
    includes the plug resistance. Each coil fires TWO plugs (in sequence).
    IIRC, this design is only used in 2-3 years around 95-96, for 2.8
    and 3.2 liter M104 engines. We now stick to factory plug. And Tiger is
    right: we change the plugs every 30k miles in average (or misfiring will
    start).

    The 300SE should be M103 engine. I am not aware it ever uses such
    design as the C280. However, I would still recommend factory plug.

    Dr_Chino wrote:
    > On 18 mar, 18:13, "Tiger" <tiger0...@hotmail.com> wrote:
    >
    >>Iridium is good... they last alot longer. Please remember factory plugs
    >>should last 100.000 miles. These plugs are not copper.
    >>
    >>Platinum single electrode is okay substitute. I don't recommends putting
    >>anything other than factory plugs.
    >>
    >>If the factory plugs comes with two electrodes, then you can put two
    >>electrodes in or equivalent single electrode oif the same grade... do not
    >>downgrade.
    >>
    >>I don't remember what year MB start to use these long lasting plugs...
    >>whatever it is, these plugs are not every year tuneup parts. Even copper
    >>plugs on older cars can last 2 or 3 years without a problem. I would say
    >>roughly 30,000 miles.

    >
    >
    > Thanks Tiger
    > part of my problem was my car (w140 1993 300SE) wasnt original plugs,
    > local MB dealer (list) uses Bosch F8 !! copper electrode, so it sucks
    > i ask for Bosch platinum even for import, they cant do it for me.
    > thats why i choose on Champion from a good friend that owns a MB.
    > i have read about Itrium but not about iridium spark plugs on street
    > cars.
    >
    > now i note a difference, works better, but i still think im not using
    > "the best" sparkplug
    >
    > when your local dealer have wrong info youre lost!!!
    >
    > best regards



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