cl65 exhaust issue
Thread Starter
Senior Member
Joined: Jul 2011
Posts: 378
Likes: 1
From: LA CA
w215 cl65, W212 E63, R53 Mini Cooper JCW, E92 328I
cl65 exhaust issue
i have had bad luck with my random miss fire on my 2005 cl65 after changing almost every part that involves the ignition system, there still is a miss fire... well today when i started my car.. i was out side admiring the nice exhaust sound the 65 has during a cold start.. then i noticed after it warmed up that the right side exhaust system is acting different then the left side. so i came up to the exhaust and noticed that the right side has less exhaust pressure then the left side, also the left side is allot hotter then the right side, which get me to think that there might be a clog in my right side exhaust system.... maybe the Cat? which might be why i have a Miss fire.... tomorrow i might take out my laser heat gun and check to see if there is a noticeable heat difference between both exhaust pipes, which would suggest a clog in the system... what do you guys think?
MBWorld Fanatic!
Joined: Feb 2008
Posts: 1,803
Likes: 12
From: Charleston, SC
GL450
Catalytic converters are warrantied by the manufacturer for the lesser of 8 years or 80k miles, per Federal regulations. Something to bear in mind, because even if you're not under warranty, the cats may be.
Thread Starter
Senior Member
Joined: Jul 2011
Posts: 378
Likes: 1
From: LA CA
w215 cl65, W212 E63, R53 Mini Cooper JCW, E92 328I
thanks for all the input, i just bought a back pressure tester for my car and i am going to try to see if there is excesse pressure build before the cats. if i do find noticable back pressure i will show the dealer the specs and have them set me up for a appointment..
Trending Topics
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Thread Starter
Senior Member
Joined: Jul 2011
Posts: 378
Likes: 1
From: LA CA
w215 cl65, W212 E63, R53 Mini Cooper JCW, E92 328I
im tempted to go to a realy nice fabricating shop and have them make me a 3 inch stainless steel mandrel bent turbo down pipe with no cats.... tempting tempting..
MBWorld Fanatic!
Joined: Jan 2007
Posts: 1,986
Likes: 9
From: Toronto
V12TT
Got a full mandrel bent 3" stainless steel system with all cat delete for mine last year. Loving it.
Thread Starter
Senior Member
Joined: Jul 2011
Posts: 378
Likes: 1
From: LA CA
w215 cl65, W212 E63, R53 Mini Cooper JCW, E92 328I
the dealer just called me after having my car at the dealer for 2 days and found out that my mysterious miss fire is becuase of blocked CATS, good thing i am still covered under federal 8 year warrentee for my cl65.. so after replacing both coil rails, spark plugs, coil driver, and fuel filter.. it ended up being a $2000 CAT
Thread Starter
Senior Member
Joined: Jul 2011
Posts: 378
Likes: 1
From: LA CA
w215 cl65, W212 E63, R53 Mini Cooper JCW, E92 328I
also the dealer hooked up there mercedes computer and saw that my turbo temp was way to high and this would cause issues, they checked and said the pump is working perfectly but system might need to be bled..
