MBWorld.org Forums

C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

random misfire. in cylinder. 4 5 6

     
Old May 4, 2015 | 11:24 AM
Share
  #1  
shak87's Avatar
shak87
Thread Starter
Newbie
 
Joined: May 2015
Posts: 6
Likes: 0
w203
random misfire. in cylinder. 4 5 6
i have a randome missfire its p0304 p0305 p0306
spark plugs changed
fuel pump changed

but it still the same
Reply
0
Old May 4, 2015 | 11:46 AM
Share
  #2  
VVF's Avatar
VVF
MBWorld Fanatic!
 
Joined: Sep 2011
Posts: 1,657
Likes: 35
From: Austin, TX
2005 C230K(sold), Mk7 Jetta
Maybe try to swap coil packs with the other side and see if missfires move over?
Reply
0
Old May 4, 2015 | 12:32 PM
Share
  #3  
shak87's Avatar
shak87
Thread Starter
Newbie
 
Joined: May 2015
Posts: 6
Likes: 0
w203
it have been done and still the same
Reply
0
Old May 4, 2015 | 12:56 PM
Share
  #4  
VVF's Avatar
VVF
MBWorld Fanatic!
 
Joined: Sep 2011
Posts: 1,657
Likes: 35
From: Austin, TX
2005 C230K(sold), Mk7 Jetta
Injectors as well, I am assuming?
Reply
0
Old May 5, 2015 | 07:42 AM
Share
  #5  
shak87's Avatar
shak87
Thread Starter
Newbie
 
Joined: May 2015
Posts: 6
Likes: 0
w203
i didnt change the injectors
Reply
0
Old May 5, 2015 | 07:43 AM
Share
  #6  
shak87's Avatar
shak87
Thread Starter
Newbie
 
Joined: May 2015
Posts: 6
Likes: 0
w203
can it be the spark plug wires
Reply
0
Old May 5, 2015 | 07:55 AM
Share
  #7  
castroadan's Avatar
castroadan
Member
 
Joined: Jun 2014
Posts: 222
Likes: 2
09 S550, 08 Charger Srt8, 63 Ford Galaxie 500, 07 GSXR1000
If you swapped the coil packs then I doubt it's the spark plug wires.
Reply
0

Trending Topics

Old May 5, 2015 | 08:42 AM
Share
  #8  
shak87's Avatar
shak87
Thread Starter
Newbie
 
Joined: May 2015
Posts: 6
Likes: 0
w203
Originally Posted by castroadan
If you swapped the coil packs then I doubt it's the spark plug wires.
shall i change 12 wires?
Reply
0
MB World Stories

The Best of Mercedes & AMG

story-0

6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

 Verdad Gallardo
story-1

Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

 Verdad Gallardo
story-2

Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

 Verdad Gallardo
story-3

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-4

Flawlessly Restored Mercedes 190E Evo II Heads to Auction

 Verdad Gallardo
story-5

Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

 Verdad Gallardo
story-6

Mercedes EQS Gets A Major Update: Everything You Need to Know

 Verdad Gallardo
story-7

5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

 Verdad Gallardo
story-8

Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

 Verdad Gallardo
story-9

10 Most Reliable Mercedes-Benz Models You Can Buy Used

 Verdad Gallardo
Old May 5, 2015 | 08:47 AM
Share
  #9  
castroadan's Avatar
castroadan
Member
 
Joined: Jun 2014
Posts: 222
Likes: 2
09 S550, 08 Charger Srt8, 63 Ford Galaxie 500, 07 GSXR1000
Originally Posted by shak87
shall i change 12 wires?
When you swapped the coil packs it comes with the wires.
Reply
0
Old May 5, 2015 | 08:47 AM
Share
  #10  
castroadan's Avatar
castroadan
Member
 
Joined: Jun 2014
Posts: 222
Likes: 2
09 S550, 08 Charger Srt8, 63 Ford Galaxie 500, 07 GSXR1000
So I doubt it is the wires.
Reply
0
Old May 5, 2015 | 10:42 AM
Share
  #11  
shak87's Avatar
shak87
Thread Starter
Newbie
 
Joined: May 2015
Posts: 6
Likes: 0
w203
Originally Posted by castroadan
So I doubt it is the wires.
shall ibuy
new wires
Reply
0
Back to Subforum
C-Class (W203)
View Next Unread
Poor C240 start problem

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread
Search this Thread:

Advanced Search
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 0 votes, average.
Show Printable Version
Email this Page

Advanced Search

All times are GMT -4. The time now is 02:41 PM.

story-0
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-1
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-2
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-3
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-4
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-5
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-6
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-7
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-8
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-9
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE