Spark Plug Replacement on 2007 C230 Sport (V6 2.5L)

15

Asked by texBob1221 Dec 15, 2015 at 04:25 PM about the 2007 Mercedes-Benz C-Class C 230 Sport

Question type: Maintenance & Repair

Are there any tips or key pieces of information I should know about when
replacing the spark plugs on my 2007 C230 Sport (V6 2.5L)?

I want to make sure it's as simple as it appears and there are no snafus
involved in the process that could lead to other issues.

Process as I understand it (correct me if I'm wrong):
1. Remove Air Intake cover that holds the air filters.
2. Locate spark plug.
3. Detach electrical lead to the spark plug assembly
4. Remove screws holding spark plug assembly in place.
5. Lift out the spark plug actuator/module assembly
6. Using a 5/8" socket with a 6" extension, loosen and remove spark plug
7. Replace old spark plug with OEM spark plug, by hand tightening via 5/8"
socket w/ 6" extension.
8. Re-insert spark plug actuator/module until it is seated flush with the
mounting screw holes.
9. Re-insert screws and hand tighten
10. Re-attach electrical lead
(Repeat Steps 2-10 five more times and reattach Air Intake cover)

Did I leave anything out?

5 Answers

Use some anti-seize on the spark plug threads.

3 people found this helpful.
26,835

Before installing the new plugs make sure that the gap at the tip is set to the correct dimension. If it is supposed to be 0.030", measure it with a feeler gauge of this thickness by inserting the gauge between the two electrodes. Otherwise you sound like you have the right process. Just be careful to avoid breaking one of the old ones off when removing it. If it is too tight with your wrench, spray it with a penetrant like WD-40 and let it sit overnight before removing it.

1 people found this helpful.
20

Brief question: My understanding is that a V6 should have six spark plugs, right? I however find a bunch of people talking online about *four* spark plugs for the C230 2001-2007. Also, this video seems to only change four spark plugs: https://www.youtube.com/watch? v=a6e8vSLmNx4 Can you enlighten me? Much appreciated..

2 people found this helpful.
10

How many miles should you go until changing the plugs or wait for symptoms. I have a 2007 c230 and 40000 miles from last plug change and no problems

1 people found this helpful.

Your Answer:

C-Class

Looking for a Used C-Class in your area?

CarGurus has 1,455 nationwide C-Class listings starting at $3,799.

Postal Code:

CarGurus Experts

  • #1
    Lorne Grandison
    Reputation
    12,510
  • #2
    zabi
    Reputation
    5,610
  • #3
    PPC123
    Reputation
    5,150
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Mercedes-Benz E-Class
30 Great Deals out of 496 listings starting at $5,700
Used BMW 3 Series
71 Great Deals out of 1,176 listings starting at $1,995
Used Mercedes-Benz S-Class
15 Great Deals out of 227 listings starting at $8,977
Used BMW M3
8 Great Deals out of 90 listings starting at $15,995
Used BMW 5 Series
19 Great Deals out of 321 listings starting at $4,500
Used Mercedes-Benz CLS
7 Great Deals out of 86 listings starting at $8,000
Used Dodge Charger
38 Great Deals out of 645 listings starting at $4,888
Used Lexus IS
25 Great Deals out of 311 listings starting at $5,900
Used Chevrolet Corvette
29 Great Deals out of 1,060 listings starting at $15,871

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.