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URGENTT!!! Misfire
E63s 2014 m157 when its cold its completly normal you can drive it however you want it
if you leave it on or off in place without driving and car gets more hot and you start to drive and directly fire it gives random misfire. than i turn it of drive it around normaly for 1-2 km to cool down and than push the pedal as many times i want everything its okay no misfire no nothing what it could be
the issue comes back every time i leave my car on and off not driving it so any ideas
URGENTT!!! Misfire
E63s 2014 m157 when its cold its completly normal you can drive it however you want it
if you leave it on or off in place without driving and car gets more hot and you start to drive and directly fire it gives random misfire. than i turn it of drive it around normaly for 1-2 km to cool down and than push the pedal as many times i want everything its okay no misfire no nothing what it could be
the issue comes back every time i leave my car on and off not driving it so any ideas
That's a new one... "heatsoak misfire" or are we already familiar with the roots of this condition?
Sorry to hear this is so pronounced, you can feel it running poorly.
When you scan faults, this is likely the type that will come back with a "random misfire" code not a single cylinder issue. But we don't like to juggle with hundreds of items.
You say it's URGENT, urgent to scan for fresh fault codes .
There is no magic wand, everything must be in working order! Of course good ignition spark and injection pressure without intake leaks but all that should not vary with extreme heatsoaks.
My only fear is cylinder scoring. With extreme heat comes extreme metal expansion: your pistons!
The "misfire" codes are really not limited to mixture firing! The ECU is flagging something that's impacting the smooth crank rotation.
When the CKP tics don't match expected timing then something caused that delay. Either one cylinder or random accross all of them.
One thing misfire guarantees regardless of causation is LEAN TRIM: low power engine! ECU puts the unburnt gas on diet to prevent burning cats.
> URGENT:
Let's take a shortcut because you want this fixed yesterday: provide your engine with a fresh oil change of your choice.
This will help minimize your heatsoaks for a while.
Get us scan report when available.
Read LTFT's: you need these close to neutral.
Last edited by CaliBenzDriver; 06-27-2024 at 02:09 PM.
URGENTT!!! Misfire
E63s 2014 m157 when its cold its completly normal you can drive it however you want it
if you leave it on or off in place without driving and car gets more hot and you start to drive and directly fire it gives random misfire. than i turn it of drive it around normaly for 1-2 km to cool down and than push the pedal as many times i want everything its okay no misfire no nothing what it could be
the issue comes back every time i leave my car on and off not driving it so any ideas
have you read the sticky topics on misfires?
this is very typical. This is not unique all to this vehicle. You need to get your coils replaced or at least give us more information as to when you replaced your spark plugs and your coils. I think you probably haven't read the numerous threads about misfires
That's a new one... "heatsoak misfire" or are we already familiar with the roots of this condition?
Sorry to hear this is so pronounced, you can feel it running poorly.
When you scan faults, this is likely the type that will come back with a "random misfire" code not a single cylinder issue. But we don't like to juggle with hundreds of items.
You say it's URGENT, urgent to scan for fresh fault codes .
There is no magic wand, everything must be in working order! Of course good ignition spark and injection pressure without intake leaks but all that should not vary with extreme heatsoaks.
My only fear is cylinder scoring. With extreme heat comes extreme metal expansion: your pistons!
The "misfire" codes are really not limited to mixture firing! The ECU is flagging something that's impacting the smooth crank rotation.
When the CKP tics don't match expected timing then something caused that delay. Either one cylinder or random accross all of them.
One thing misfire guarantees regardless of causation is LEAN TRIM: low power engine! ECU puts the unburnt gas on diet to prevent burning cats.
> URGENT:
Let's take a shortcut because you want this fixed yesterday: provide your engine with a fresh oil change of your choice.
This will help minimize your heatsoaks for a while.
Get us scan report when available.
Read LTFT's: you need these close to neutral.
the engine its just redone
and measured the intake temps max it goes 51 celsius degre the spark plugs are new high pressure pumps new and new injectors
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
If you are talking about your E55, then you need to post to the correct forum. Your engine is the M113K, correct? There is a huge difference between that and the engines discussed on this forum.
If you are talking about your E55, then you need to post to the correct forum. Your engine is the M113K, correct? There is a huge difference between that and the engines discussed on this forum.
bro i have them both im talking about my e63s 2014 m157 didnt you read it
i know whats the m113k and m157 😂😂
m113k its the beast and m157 im gona throw it in a junkyard cuz its geting on my nervs
spend to much money on buying and mantaining it
On m113k i dont remember the last time i changed the spark plugs and still no issues 100-200 kmh 7.7s hot weather and 7.1s on cold weather and still going strong
with the m157 i have done the cylindre walls head gaskets and after 2 months my engine was seized and change the engine block so yeah im not on the wrong forum bro
Thanks for these specifics....
It looks like new pump + injectors did not cure your issue.
This tells me a FUEL ISSUE IS PRE-EXISTING.
New parts are those that we won't need to replace!
What's left to do now all the expensive parts have been sold ... honest TROUBLESHOOTING!
Read both of your fuel pressures
Read both LTFT at idle
New ignition coils always a good idea including boot-sleeve. Their high-voltage insulation tends to get cooked by extreme heat.
150+ bar on the fuel pressure
And i scaned for dtcs when i didnt get a missfire when car was runing normal on full throtle and one error poped up and it said that one of injectors its not on coorrect throwing somthing like that
150+ bar on the fuel pressure
And i scaned for dtcs when i didnt get a missfire when car was runing normal on full throtle and one error poped up and it said that one of injectors its not on coorrect throwing somthing like that
.
ok, great... there is your smoking gun:
the injectors being flagged by ECU. That's a major mixture upset.
The tech who delt with replacing all your injectors need to finish the job.
Did they charge you book-price labor and not complete the coding ???
Right now I would iron out "fuel delivery" questions.
It's unsettling someone would replace all 8x injectors at once and return the car not working. Is that gravy?
I remember one time I got my Acura tires rotated at Costco... they only rotated one side. The clerk stop arguing when he saw my dirty front wheel.
Last edited by CaliBenzDriver; 06-27-2024 at 10:40 PM.
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
Originally Posted by E55amg01
bro i have them both im talking about my e63s 2014 m157 didnt you read it ... so yeah im not on the wrong forum bro
Well, bro, sorry I missed which car you were talking about. That happens when people have incomplete profiles. Regardless, it's best not to get an attitude when you come begging for help.
Well, bro, sorry I missed which car you were talking about. That happens when people have incomplete profiles. Regardless, it's best not to get an attitude when you come begging for help.
bro where do you see me beging for help what are you talking
you dont have to see my profile just read my question and you will see for what car im asking help for
again asking not beging
anyway our friend here calibenzdriver its right the injectors were not coded
I think you are in the wrong forum bro not me cuz a six cylindre car its not a m157
MB uses standardized parts designed to work in many different applications. They use a software teachin process to configure parts with specific options.
Once the injectors are all individually matched the computer is able to time injection pulse width and read combustion feedback from "upstream wideband Lambda" sensors.
Fuel trims get adjusted based on these calculations.
Last edited by CaliBenzDriver; 06-28-2024 at 07:28 PM.
MB uses standardized parts designed to work in many different applications. They use a software teachin process to configure parts with specific options.
Once the injectors are all individually matched the computer is able to time injection pulse width and read combustion feedback from "upstream wideband Lambda" sensors.
Fuel trims get adjusted based on these calculations.
i did the injectors calibration and now im still geting cylindre 8 i changed the ignition coil and still the same thing let the car cool down and ready to go hard then after the car gets warm it starts shaking sometimes and somtimes tuns off the cylindre 8
so any idea
i did the injectors calibration and now im still geting cylindre 8 i changed the ignition coil and still the same thing let the car cool down and ready to go hard then after the car gets warm it starts shaking sometimes and somtimes tuns off the cylindre 8
so any idea
compression leak down test?
bad gas?
your IAT's are never higher than 128F?
new plugs? Indexed properly?
Oil in engine wire harness?
I don’t own or drive a vehicle myself, but I can help with information about different models and th
URGENT!!!E63S Random Misfire
Check for any recent changes or repairs to the engine or fuel system. Inspect spark plugs, ignition coils, and fuel injectors for faults. Consider running a diagnostic scan for error codes to pinpoint the issue.
i did the injectors calibration and now im still geting cylindre 8 i changed the ignition coil and still the same thing let the car cool down and ready to go hard then after the car gets warm it starts shaking sometimes and somtimes tuns off the cylindre 8
so any idea
You now progressed to only Cyl.8 misfiring with
good fuel injector
good ignition plug + COP
This is edging towards low cylinder contribution.
-1- Read LTFT idle fuel trims for laggy LEAN
-2- Borescope #8 with piston lowered.
What type of oil are you running that needs you to stop for cool downs ??
Last edited by CaliBenzDriver; 06-29-2024 at 03:38 PM.
compression leak down test?
bad gas?
your IAT's are never higher than 128F?
new plugs? Indexed properly?
Oil in engine wire harness?
today did compression test and it was really good on all cylindres as i told you the engine its just rebuild its ben 9 days
and no its not injectors problem or ignition coil or fuel pressure or spark plugs
today i changed engine harnes and again the same problem the last thing im gona try on monday its the ecu
06-27-2024, 10:36 AM
