2008 CLK 550 multiple cylinder misfires, rough idle
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2008 clk 550
2008 CLK 550 multiple cylinder misfires, rough idle
Poor thing. Sat for 20+ days, got cold, snowed, warmed up. I never started it, started it the other day and now have check engine light on. Put an reader on it and have multiple cylinder misfires, and it idles terribly. Heading to the dealership Monday (Better get ready to bend over!) but thought maybe if I put some Lucas fuel injection cleaner in it might fix it. Any thoughts on additives like this doing more harm than good? Or any thoughts on the misfires and idle? Tks
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2008 clk 550
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From: New Hampshire
Magma Red W208 55 AMG, W203 C230 Kompressor Sedan 6speed M/T, W220 S500
The engine runs erratically and misfires An ignition cable may be damaged. The engine electronics may not be op- erating properly. Unburned gasoline may have entered the catalytic converter and damaged it.
̈Give very little gas.
̈Give very little gas.
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From: Canada
07 E63 + 07 CLK63CAB
Original spark plugs?
Which cyls are misfiring.
pull out plugs from the cyls that are showing misfire, check for wetness, gas or oil soaked
If wet then could be coil on that plug or just worn out plugs altogether.
I believe if the car has a misfire it will shut down that cyl, you could be clearing the code but need a different system to satisfy the computer, ie Star/ dealer
Good luck, keep us informed as to the outcome.
Which codes did you have originally that cleared?
Which cyls are misfiring.
pull out plugs from the cyls that are showing misfire, check for wetness, gas or oil soaked
If wet then could be coil on that plug or just worn out plugs altogether.
I believe if the car has a misfire it will shut down that cyl, you could be clearing the code but need a different system to satisfy the computer, ie Star/ dealer
Good luck, keep us informed as to the outcome.
Which codes did you have originally that cleared?
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2008 clk 550
"cylinder 1 misfire"
"Injector circuit open cylinder"
"cylinder 4 misfire detected"
hopefully I can make it to the dealer 1.5 hours away. I guess just dont push it hard.
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07 E63 + 07 CLK63CAB
There must be a closer dealer, no?
Driving that far with two cyls misfiring is not good for the cats and will cause them to overheat if raw fuel is constantly being sent to them in the exhaust.
Can you or someone else remove the number 4 sparkplug or just re[place it if it is the original plug, how many miles on the car, have you owned it from new?
Driving that far with two cyls misfiring is not good for the cats and will cause them to overheat if raw fuel is constantly being sent to them in the exhaust.
Can you or someone else remove the number 4 sparkplug or just re[place it if it is the original plug, how many miles on the car, have you owned it from new?
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From: Canada
07 E63 + 07 CLK63CAB
Standing in from of the car looking at the engine the cyl order is 1234 on the passenger side or your left side, and 5678 on the driver side.
Cyl 1 is first obviously near the headlight left side and cyl 4 is near the firewall on the (left) passenger side.
Just by chance look in these areas and see if maybe a rodent has not crawled up and chewed on some wiring.
Cyl 1 is first obviously near the headlight left side and cyl 4 is near the firewall on the (left) passenger side.
Just by chance look in these areas and see if maybe a rodent has not crawled up and chewed on some wiring.
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2004.7 C180 Kompressor, BMW X5, Chevrolet Camaro LT, Mercedes S, Cesna 152.
Sounds like you have moisture ingress into the fuel. Put a bottle of Stabil in the fuel tank & use it next time its going to sit for 20 days.
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From: New Hampshire
Magma Red W208 55 AMG, W203 C230 Kompressor Sedan 6speed M/T, W220 S500
I agree with mercedes4ever. I would use some dry-gas or something. My 55 is sitting in storage with a belly full of super and stabil.
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2008 clk 550
Ok, agreed, I will do that next time. But what do I do monday for my 1.5 hour drive to the dealership? I was going to get a bottle of Lucas, any thoughts about that? I started it today, let it warm up and drove it 100 yards, terrible idle and check eng. (sigh) I so worried about my drive to Beaumont Monday.
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2008 clk 550
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From: New Hampshire
Magma Red W208 55 AMG, W203 C230 Kompressor Sedan 6speed M/T, W220 S500
I feel your pain. I live about an hour from the closest dealer (not that I'd ever go there unless it's for a new key). I would think that you should make it. Either way, if you do break down, the closer you are the cheaper the tow bill. Throw your fuel additive in and floor it. Good luck.
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2008 clk 550
...and the winner is...
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07 E63 + 07 CLK63CAB
Well I guess that's good, knowing 
You should get the car smog tested just in case the catalytic converter was damaged during the drive.
Go for the new harness, would not feel good having someones soldering job under the hood, could also cause issues down the road. Not sure where they would get a partial harness unless it is from the salvage yard. If it is insurance then go for the new harness for sure.
Good Luck and hopefully the smooth ride home
Again keep us posted.
You should get the car smog tested just in case the catalytic converter was damaged during the drive.
Go for the new harness, would not feel good having someones soldering job under the hood, could also cause issues down the road. Not sure where they would get a partial harness unless it is from the salvage yard. If it is insurance then go for the new harness for sure.
Good Luck and hopefully the smooth ride home
Again keep us posted.
