Misfiring?
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Super Member
Joined: Mar 2008
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From: Vancouver, B.C., CANADA
2006 E55 AMG/1996 C36 AMG/1999 C43/55 AMG/2021 Toyota Tundra Crew Max TRD Sport Premium
Misfiring?
Car started to run rough and engine light came on days after I cleaned the entire air cleaner and induction system and installed Green Filters. OBD revealed codes p0300, p0305, p0306 and p0307 in which indicate cylinders 5, 6, and 7 misfiring with first code detecting random/multiple cylinder misfiring. Has anyone had experience with what this could be? I have ordered new NGK Iridium IX plugs(16) to start and want to be prepared if that does not correct the problem. Could it be the plug wires or ignition coils? What are the best wires to go with? Bosch? Any input is appreciated.
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From: Maryland
C43
I had issues of similar nature. It eventually got real bad. I went for new plugs, then coils. After that I went for a MAS. I feared coils packs but was directed to the catalytic converters. A heat sensor revealed one of the rears was running a lot hotter han the other. Long story short one of the rears was clogged to death. The hotter one was the working cat, working overtime. We took pipe off, stabbed out the mesh and crap hollowing it out and it is good to go.
My car slowly was loosing power and near the end would die at stops too. I figured the plugs and coils were due for a tune up to try first.
My car slowly was loosing power and near the end would die at stops too. I figured the plugs and coils were due for a tune up to try first.
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Joined: Jul 2009
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From: Maryland
C43
I went with Bosch wires from usautoparts.com. Dealer wanted like 600 for set vs around 200.
Also check if any oil is leaking into the spark plugs from the valve covers. May need gaskets. Yet another venture I replaced (but needed attention anyway) with my misfires.
Also check if any oil is leaking into the spark plugs from the valve covers. May need gaskets. Yet another venture I replaced (but needed attention anyway) with my misfires.
Last edited by Frank Castle; Jul 21, 2012 at 01:02 PM.
Thread Starter
Super Member
Joined: Mar 2008
Posts: 960
Likes: 26
From: Vancouver, B.C., CANADA
2006 E55 AMG/1996 C36 AMG/1999 C43/55 AMG/2021 Toyota Tundra Crew Max TRD Sport Premium
I had issues of similar nature. It eventually got real bad. I went for new plugs, then coils. After that I went for a MAS. I feared coils packs but was directed to the catalytic converters. A heat sensor revealed one of the rears was running a lot hotter han the other. Long story short one of the rears was clogged to death. The hotter one was the working cat, working overtime. We took pipe off, stabbed out the mesh and crap hollowing it out and it is good to go.
My car slowly was loosing power and near the end would die at stops too. I figured the plugs and coils were due for a tune up to try first.
My car slowly was loosing power and near the end would die at stops too. I figured the plugs and coils were due for a tune up to try first.
Cheers
Member
Joined: Jul 2009
Posts: 178
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From: Maryland
C43
If you can, do the wires at the same time as they can be a pain to get to on some of them.
If you are getting constant cylinders misfiring- swap coil pack to another area and see if that misfire follows where you placed it before shelling out for coil packs.
If you are getting constant cylinders misfiring- swap coil pack to another area and see if that misfire follows where you placed it before shelling out for coil packs.
Thread Starter
Super Member
Joined: Mar 2008
Posts: 960
Likes: 26
From: Vancouver, B.C., CANADA
2006 E55 AMG/1996 C36 AMG/1999 C43/55 AMG/2021 Toyota Tundra Crew Max TRD Sport Premium
Cheers
Thread Starter
Super Member
Joined: Mar 2008
Posts: 960
Likes: 26
From: Vancouver, B.C., CANADA
2006 E55 AMG/1996 C36 AMG/1999 C43/55 AMG/2021 Toyota Tundra Crew Max TRD Sport Premium
Well, I changed the plugs and the misfiring is still occurring. I am now going to purchase new ignition wires and hope that they do the trick. Does anyone know where the best place to purchase them online is? Also, what brand?
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From: Sydney, Australia
190D 2.5 (x2), 190E 2.6, W202 C240,W202 C43 (C55), W210 E55, W212 E250CDI
Multiple cylinders misfiring, usually only whilst driving and not at idle, is a dead giveaway for a failing MAF. Basicly is causes a lean misifre usually in the upper load/rpm ranges. Coils very very rarely fail on M112/M113's, genuine leads usually only have 1 or 2 fail at a time, the most common symptom is a hesitation on takeoff intermitantly, you'd only get a misfire code if both leads for the same cylinder failed.
Standard Bosch or NGK plugs seem to work best, I dont recommend so called "performace plugs", they dont seem to offer a benefit on these engines.
Standard Bosch or NGK plugs seem to work best, I dont recommend so called "performace plugs", they dont seem to offer a benefit on these engines.
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From: A.D., U.A.E
2000 (W202 C200) & 2000 (W202 C55)
Multiple cylinders misfiring, usually only whilst driving and not at idle, is a dead giveaway for a failing MAF. Basicly is causes a lean misifre usually in the upper load/rpm ranges. Coils very very rarely fail on M112/M113's, genuine leads usually only have 1 or 2 fail at a time, the most common symptom is a hesitation on takeoff intermitantly, you'd only get a misfire code if both leads for the same cylinder failed.
Standard Bosch or NGK plugs seem to work best, I dont recommend so called "performace plugs", they dont seem to offer a benefit on these engines.
Standard Bosch or NGK plugs seem to work best, I dont recommend so called "performace plugs", they dont seem to offer a benefit on these engines.
ZAYED,,
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From: Land of mountains, cheese, chocolate and watches
12' W204 C63 AMG coupe "T-Rex", 12' W451 Smart Fortwo Pulse (99' W202 C43 AMG + Ultima Can-Am sold)
Hook up a code reader perhaps and the codes pulled should point the way to which cylinders are misfiring.
I also agree that standard plugs and wires work perfectly and probably better than some 'snake juice' stuff hanging around.
I also agree that standard plugs and wires work perfectly and probably better than some 'snake juice' stuff hanging around.
MBWorld Fanatic!
Joined: Jan 2007
Posts: 1,152
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From: Sydney, Australia
190D 2.5 (x2), 190E 2.6, W202 C240,W202 C43 (C55), W210 E55, W212 E250CDI
Seeing it's happened after doing some work, take the engine cover off and have a really good look and the MAF and the elbow between it and the throttle body to make sure it's sitting correctly and the breather hose is attached to the elbow. It can disloge slightly and cause a air leak and lean running. Did you spray cleaner through the MAF or through a breather/vaccum hose?
MBWorld Fanatic!
Joined: Aug 2006
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From: A.D., U.A.E
2000 (W202 C200) & 2000 (W202 C55)
Seeing it's happened after doing some work, take the engine cover off and have a really good look and the MAF and the elbow between it and the throttle body to make sure it's sitting correctly and the breather hose is attached to the elbow. It can disloge slightly and cause a air leak and lean running. Did you spray cleaner through the MAF or through a breather/vaccum hose?
removed the hose, its a little little hole,, that causes a little Engine vibration at the stand idel.....
ZAYED,,
