Why does my spark plugs always becames dark and i need to like clean it once a week

Asked by Fei Feb 18, 2016 at 11:57 AM about the 2003 Mercedes-Benz C-Class

Question type: Maintenance & Repair

My spark plugs always becomes black/dark like missfire but anyone who
know why it becomes like this and how can i fix that please help me

221,015

Rowefast answered 8 years ago

Should get it to a shop. The plugs are black because it is running rich. There must be a bad 02 sensor, or some other sensor causing this. A shop can diagnose this.

1 people found this helpful.

Mark helpful

Fei answered 8 years ago

Engine light is not on

Mark helpful

Your Answer:

Why does my spark plugs always becames dark and i need to like clean it once a week 2 Answers

My spark plugs always becomes black/dark like missfire but anyone who know why it becomes like this and how can i fix that please help me

2003 Mercedes-Benz C-Class

-

Maintenance & Repair
I have a 1997 Mercedes c230.About week ago smelled smoke. Friend changed ignition with key to starting it by button. Then wouldnt start. Hooked up code scanner and replaced crank shaft position sensor 1 Answer

Prior to friend working on it, my entire panel went out. No gas, odometer, no speed nothing. Also, about 2 weeks ago my son dropped a penny in cigarette lighter and shorted that out so friend pul...

1997 Mercedes-Benz C-Class C 230 Sedan

-

Maintenance & Repair
how do i know if my Mercedes c class(c180 2009) is stollen or not? I currently live in iraq and my car all of a sudden stopped working. the computer shows it has two different vin numbers. i have ordered it a new remote control for the car but it wont read the car. the smart key when put in the car it does not recognize the key. what can i do to figure this issue out. my vin number is WDDGF46X09F263274. THANK YOU FOR YOUR HELP. 2 Answers

how do i know if my Mercedes c class(c180 2009) is stollen or not? I currently live in iraq and my car all of a sudden stopped working. the computer shows it has two different vin numbers. i have ord...

2009 Mercedes-Benz C-Class

-

Maintenance & Repair
Can someone describe to me the actual location for the ignition coils for my Mercedes Benz C220 1996, and the original and OEM part number for it? 8 Answers

I was advised that the ignition coils are located in the engine area on the passenger side near the air filter area to the left of the housing of the spark plugs. I looked but couldn't find it. Als...

1996 Mercedes-Benz C-Class C 220

-

Maintenance & Repair
I was at a stop light and all of a sudden my car began running rough when I started to accelerate it wouldn't throttle up and it had no power the more I throttled the worse it got. 2 Answers

I had to slowly accelerate or it would almost die I baby it back home let it set a couple of hrs. it started and ran good for about 5 or 10 mins. then it began running rough with no power when I tried...

2003 Mercedes-Benz C-Class C 240 Sedan

-

Maintenance & Repair

Looking for a Used C-Class in your area?

CarGurus has 1,318 nationwide C-Class listings starting at $3,500.

Used Mercedes-Benz E-Class

31 Great Deals out of 510 listings starting at $5,450

Used BMW 3 Series

61 Great Deals out of 1,153 listings starting at $2,500

Used Mercedes-Benz S-Class

16 Great Deals out of 198 listings starting at $6,500

Used BMW M3

7 Great Deals out of 81 listings starting at $14,995

Used BMW 5 Series

14 Great Deals out of 281 listings starting at $5,299

Used Chevrolet Corvette

19 Great Deals out of 777 listings starting at $18,999

Used Ford Mustang

30 Great Deals out of 1,599 listings starting at $7,999

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.

Why does my spark plugs always becames dark and i need to like clean it once a week

2 Answers

Your Answer:

Looking for a Used C-Class in your area?

Shortcuts

Search Mercedes-Benz C-Class Questions

CarGurus Experts

Find great deals from top-rated dealers

Related Models For Sale

Why does my spark plugs always becames dark and i need to like clean it once a week

2 Answers

Your Answer:

Related Questions