Mercedes

Have Mercedes questions? Ask a mechanic for answers ASAP

Ask an Expert,
Get an Answer ASAP!

I have 107k miles and want to change plugs. What's best

Customer Question
I have 107k miles...

I have 107k miles and want to change plugs. What's best Spark plug for 2005 CLK 500

Mechanic's Assistant: Okay, I'll connect you to the mechanic to go over that information regarding your Mercedes. Before I do, is there anything else you want him to know?

No thank you

Submitted: 7 months ago.Category: Mercedes
Show More
Show Less
Ask Your Own Mercedes Question
Answered in 7 minutes by:
11/24/2017
Mercedes Mechanic: Randall C, ASE Certified Technician replied 7 months ago
Randall C
Randall C, ASE Certified Technician
Category: Mercedes
Satisfied Customers: 13,331
Experience: 32 years Foreign / Domestic Cars All aspects of Diag and Repair
Verified

Hello, Spark plug advances have come along ways over the years. You do have a few choices. Some cheaper and some more $ and.. each tech will have his own opinion but the later , newer plugs are now much longer lasting and burn more even, The choice I suggest? the NGK iridium plug. Yes, it does cost more but is an excellent plug for your application and really is the closest match as to what Mercedes uses nowadays. It is available at most parts stores

Often specified as original equipment, NGK Laser Iridium spark plugs are the best combination of performance and longevity.

NGK Laser Iridium Spark Plug

  • Fine wire Iridium center electrode
  • Platinum pad at ground electrode for even wear in DIS ignition systems
  • Engineered for specific vehicle applications
  • Iridium tip is six (6) times harder than platinum
Ask Your Own Mercedes Question
Customer reply replied 7 months ago
You say NGK iridium is the plug Mercedes uses “nowadays”. However my CLK 500 is a 2005 model. What’s the best plug for that particular model?
Mercedes Mechanic: Randall C, ASE Certified Technician replied 7 months ago

what I am saying is that plug was not available in say 2005. again, with advances in plug designs, Merc uses this type of plug now and.... it the best recommend for your model as well. Basically replacing the older design plugs say in 2005 with a new improved type of plug, This is an excellent plug for your year and model

Ask Your Own Mercedes Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a mercedes mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Randall C Your Own Question
Randall C
Randall C
Randall C, ASE Certified Technician
Category: Mercedes
Satisfied Customers: 13,331
13,331 Satisfied Customers
Experience: 32 years Foreign / Domestic Cars All aspects of Diag and Repair

Randall C is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.

Stephanie PElm City, NC

used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

David L.Richmond, TX

9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much.

PhilMarysville, CA

Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible.

CharlesWalnut Creek, CA

As a single woman, I really appreciate an excellent and affordable opinion.
Thank you Geordie, I will not hesitate to contact justanswer in the future!

SueCharleston, WV

Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff.

JimCastleberry, FL

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

< Previous | Next >

Meet the Experts:

MB Paul

MB Paul

Mercedes Technician

3,567 satisfied customers

Qualified Mercedes Benz Diagnostic Technician - 20+ years experience - Workshop Foreman for Mercedes

Marty

Marty

Mercedes Technician

29,460 satisfied customers

Bosch Certified Master Tech. Over 35 years experience.

Lou P. master tech

Lou P. master tech

Mercedes Technician

4,460 satisfied customers

20 years Master Certified excellent fix rate and have access to factory wiring, and instructions.

Michael Warfield

Michael Warfield

Factory Mercedes-Benz Technician

3,132 satisfied customers

Mercedes-Benz Master Certified technician

Matt

Matt

Engineer

643 satisfied customers

Mechanical Engineer with 23 years experience in the auto industry, 8 yrs in formula 1 engine testing

promerc

promerc

mercedes diagnostic technician

553 satisfied customers

Qualified mercedes diagnostic technician & service team manager , ATA registered Master tech

Hipo64

Hipo64

Mercedes Technician

444 satisfied customers

Work and diagnose electronics on daily basis.

< Previous | Next >

Related Mercedes Questions
I am trying to change the spark plugs on my 2012 ML350.
I am trying to change the spark plugs on my 2012 ML350. Videos on this all appear to be 2011 and earlier models. I am stuck on how to remove the unhinge cover to access the coils. … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
5,487 satisfied customers
Changed out the Spark Plugs on my 1999 SL 500 AMG first the
Changed out the Spark Plugs on my 1999 SL 500 AMG first the left side. Car ran great. Next day the Right side, now the car Idles rough, Stalls and when you give it gas it bogs down no power … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
4,460 satisfied customers
Random misfire from 1 2 3 and 4 changed all spark plugs and
random misfire from 1 2 3 and 4 changed all spark plugs and coils still same codes no injector pulse from those cylinders … read more
Wolfgang
Wolfgang
8 satisfied customers
Misfiring 0n sparks 5 and 6. Replaced spark plugs, wires,
Misfiring 0n sparks 5 and 6. Replaced spark plugs, wires, coils, and position sensor and still getting misfire … read more
Gary
Gary
Senior Technician
Vocational, Technical or Trade School
92 satisfied customers
I just replaced my spark plug wires and after I replaced
I just replaced my spark plug wires and after I replaced them my car started with a rough idle and when I gave it gas it just dies it ran fine before I touched it … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
4,460 satisfied customers
I was changing the spark plugs on a1999 c230,,and the wire
I was changing the spark plugs on a1999 c230,,and the wire connector that connects to the coil pack broke,,could I splice the wire and use another connector … read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
Costs to replace 8 spark plugs, clean all fuel injectors,
Costs to replace 8 spark plugs, clean all fuel injectors, replace left and right valve cover gaskets, replace tensioner on timing chain. … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
1985 SL380 cranks no start. Sl380. New spark plugs, wires,
yes, new spark plugs, wires, cap rotors, new fuel filter injectors, fuel pump, regulators, thermo time switch, modulator valve … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
1988 300e no power to coil. None. Pulling spark plugs.12
1988 300e no power to coil JA: Is the power loss consistent, or does it fluctuate? Customer: none JA: Are you fixing your 300E yourself? What have you tried so far? Customer: pulling spark plugs.12 te… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
Spark plug gap? Smart Passion 2014. Am ready to install new
yes, am ready to install new plugs but need to verify plug gap … read more
Kevin
Kevin
workshop foreman /master tech/mot tester
1 satisfied customers
What is the spark plug gap for a 79 450SL, I put in all new
I put in all new injectors and sleeves plus rebuilt the fuel distribution block and now it won't fire.… read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
I changed the spark plugs on my 04 C240 and after doing so
Hello , I changed the spark plugs on my 04 C240 and after doing so the car had no power. I checked for spark at each plug, witch it had. then i replaced the plugs with a new set. … read more
heavy_chevy_396
heavy_chevy_396
Vocational, Technical or Trade Scho
2,518 satisfied customers
Lou should I replaced spark plugs while valve covers off?
Lou should I replaced spark plugs while valve covers off? Because I wanna blow first deep inside… read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
4,460 satisfied customers
Hard start. 1989 SE300. Change spark plugs ,distributer
Yes ,change spark plugs ,distributer cap,router ,plugs wire … read more
Curtis
Curtis
Vocational, Technical or Trade Scho
1,705 satisfied customers
Just changed spark plugs and coils still not right under
Just changed spark plugs and coils still not right under load not firing under load. … read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
Pete would you recommend this spark plugs for m113 engine?
Pete would you recommend this spark plugs for m113 engine? https://www.amazon.com/NGK-Iridium-Spark-Plugs-7397/dp/B0033HZQUG/ref=sr_1_3?ie=UTF8&qid=1501108640&sr=8-3&keywords=NGK+IridiumsOr which is b… read more
Wolfgang
Wolfgang
8 satisfied customers
ATTN ..ONLY for LOU P Lou what is correct spark plugs for
ATTN ..ONLY for LOU PLou what is correct spark plugs for M113 engine? And do you have a manual ?… read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
4,460 satisfied customers
Which spark plugs the best for 2001 E430 m113 engine? Bosch
Which spark plugs the best for 2001 E430 m113 engine? Bosch FR8DPP3+ OEM or NGK Iridium IX… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x