Knocking
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Joined: Apr 2021
Posts: 846
Likes: 559
From: San Jose, CA
11 E550, 16 AMG GTS, 13 S550
When did you buy the car, how many miles, any mods, and condition of the oil will probably need to be known before moving on. Have you driven the car at all?
Lets just run through a quick safety checklist to make sure we do our best to avoid hurting anything:
Codes?
Smell the oil on the cap, fuel?
Check your oil level. What kind of oil? No additives?
Check the condition of your plugs if you can, sometimes a particularly bad misfire can make this plopping sound. cars approaching when the plugs should be out
hows your gas? Fresh tank? No additives?
Coolant level?
Does this go away when it warms up?
M177's use a dual mass flywheel that make this plopping noise, it doesn't sound metallic as least from that recording. It can be normal. Sometimes on the M177 this noise is actually normal.
I can rule out the particularly bad stuff, cylinder scoring, rod bearings, broken piston, chain guide. I'd just need to make sure the timing tensioner is working and you don't have chain slap. Consider used oil analysis.
www.amsoil.com/p/oil-analyzers-test-kit-postage-pre-paid-oaippkit/?zo=7236674
Lets just run through a quick safety checklist to make sure we do our best to avoid hurting anything:
Codes?
Smell the oil on the cap, fuel?
Check your oil level. What kind of oil? No additives?
Check the condition of your plugs if you can, sometimes a particularly bad misfire can make this plopping sound. cars approaching when the plugs should be out
hows your gas? Fresh tank? No additives?
Coolant level?
Does this go away when it warms up?
M177's use a dual mass flywheel that make this plopping noise, it doesn't sound metallic as least from that recording. It can be normal. Sometimes on the M177 this noise is actually normal.
I can rule out the particularly bad stuff, cylinder scoring, rod bearings, broken piston, chain guide. I'd just need to make sure the timing tensioner is working and you don't have chain slap. Consider used oil analysis.
www.amsoil.com/p/oil-analyzers-test-kit-postage-pre-paid-oaippkit/?zo=7236674
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Alpha European Autotech
Purchase Amsoil at 25% off from me
Chris Tran, Retired Alpha European Autotech Owner
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Purchase Amsoil at 25% off from me
Chris Tran, Retired Alpha European Autotech Owner
Amsoil Independent Dealer #7236674
Thread Starter
Newbie
Joined: Jun 2023
Posts: 7
Likes: 3
e63s
When did you buy the car, how many miles, any mods, and condition of the oil will probably need to be known before moving on. Have you driven the car at all?
Lets just run through a quick safety checklist to make sure we do our best to avoid hurting anything:
Codes?
Smell the oil on the cap, fuel?
Check your oil level. What kind of oil? No additives?
Check the condition of your plugs if you can, sometimes a particularly bad misfire can make this plopping sound. cars approaching when the plugs should be out
hows your gas? Fresh tank? No additives?
Coolant level?
Does this go away when it warms up?
M177's use a dual mass flywheel that make this plopping noise, it doesn't sound metallic as least from that recording. It can be normal. Sometimes on the M177 this noise is actually normal.
I can rule out the particularly bad stuff, cylinder scoring, rod bearings, broken piston, chain guide. I'd just need to make sure the timing tensioner is working and you don't have chain slap. Consider used oil analysis.
www.amsoil.com/p/oil-analyzers-test-kit-postage-pre-paid-oaippkit/?zo=7236674
Lets just run through a quick safety checklist to make sure we do our best to avoid hurting anything:
Codes?
Smell the oil on the cap, fuel?
Check your oil level. What kind of oil? No additives?
Check the condition of your plugs if you can, sometimes a particularly bad misfire can make this plopping sound. cars approaching when the plugs should be out
hows your gas? Fresh tank? No additives?
Coolant level?
Does this go away when it warms up?
M177's use a dual mass flywheel that make this plopping noise, it doesn't sound metallic as least from that recording. It can be normal. Sometimes on the M177 this noise is actually normal.
I can rule out the particularly bad stuff, cylinder scoring, rod bearings, broken piston, chain guide. I'd just need to make sure the timing tensioner is working and you don't have chain slap. Consider used oil analysis.
www.amsoil.com/p/oil-analyzers-test-kit-postage-pre-paid-oaippkit/?zo=7236674
thanks for the detailed response,
i just got the car yesterday with 54k miles, I’m not sure if it has mods but I don’t think it does, I’ve driven the car 50 miles since I got it the performance seems fine I did do a 0-60 with race start and it measured 4 second to 60 on the track pace which is a little off than what it’s supposed to do but other than that the performance doesn’t seem off.
the oil should of just been changed because I just bought it and they said they’ll change it
i did. scan for code there was two stored codes p002177 and p002477 I cleared them and they didn’t come back, there weren’t any other code.
i couldn’t smell fuel on the oil cap.
the oil level is right before the max and they said they put 5w-40 .
im not sure about the plugs, might be a misfire because I did notice some vibration but there’s no cel.
I think the gas is a little old because the car has been sitting at the dealer for a good amount of time
the coolant level is between Max and min
when it’s cold there’s no knock when it warms up it starts knocking on the left side of the engine where the ecu is
Out Of Control!!
Joined: Sep 2018
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From: unbegrenzt
2017 GLE350 4MATIC
thanks for the detailed response,
i just got the car yesterday with 54k miles, I’m not sure if it has mods but I don’t think it does, I’ve driven the car 50 miles since I got it the performance seems fine I did do a 0-60 with race start and it measured 4 second to 60 on the track pace which is a little off than what it’s supposed to do but other than that the performance doesn’t seem off.
the oil should of just been changed because I just bought it and they said they’ll change it
i did. scan for code there was two stored codes p002177 and p002477 I cleared them and they didn’t come back, there weren’t any other code.
i couldn’t smell fuel on the oil cap.
the oil level is right before the max and they said they put 5w-40 .
im not sure about the plugs, might be a misfire because I did notice some vibration but there’s no cel.
I think the gas is a little old because the car has been sitting at the dealer for a good amount of time
the coolant level is between Max and min
when it’s cold there’s no knock when it warms up it starts knocking on the left side of the engine where the ecu is
i just got the car yesterday with 54k miles, I’m not sure if it has mods but I don’t think it does, I’ve driven the car 50 miles since I got it the performance seems fine I did do a 0-60 with race start and it measured 4 second to 60 on the track pace which is a little off than what it’s supposed to do but other than that the performance doesn’t seem off.
the oil should of just been changed because I just bought it and they said they’ll change it
i did. scan for code there was two stored codes p002177 and p002477 I cleared them and they didn’t come back, there weren’t any other code.
i couldn’t smell fuel on the oil cap.
the oil level is right before the max and they said they put 5w-40 .
im not sure about the plugs, might be a misfire because I did notice some vibration but there’s no cel.
I think the gas is a little old because the car has been sitting at the dealer for a good amount of time
the coolant level is between Max and min
when it’s cold there’s no knock when it warms up it starts knocking on the left side of the engine where the ecu is
Is it a misfire or knock? Oil smoke from tailpipe? Excess unburned fuel smell from tailpipe?
SPONSOR
Joined: Apr 2021
Posts: 846
Likes: 559
From: San Jose, CA
11 E550, 16 AMG GTS, 13 S550
i don't think it's metal on metal it sounded closer to a plopping sound. MB throw camshaft position codes if you cough on them or if the battery runs down. if they come back thats a different conversation.
yeah those cars are rated at 3 seconds 0-60 i don't really joyride my customer cars so I couldn't tell you. I think it's the flywheel, but I'll wait for wiser people to show up
yeah those cars are rated at 3 seconds 0-60 i don't really joyride my customer cars so I couldn't tell you. I think it's the flywheel, but I'll wait for wiser people to show up
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Alpha European Autotech
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Chris Tran, Retired Alpha European Autotech Owner
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Purchase Amsoil at 25% off from me
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Amsoil Independent Dealer #7236674
Thread Starter
Newbie
Joined: Jun 2023
Posts: 7
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e63s
It’s a knock but could be a misfire causing the knock I’m not sure
there isn’t any smoke coming from the exhaust
I don’t smell any fuel from the tailpipe
this is what the car sounds like at idle in comfort with the valves open
Out Of Control!!
Joined: Sep 2018
Posts: 14,693
Likes: 4,584
From: unbegrenzt
2017 GLE350 4MATIC
it knocks at idle and part throttle and open throttle
It’s a knock but could be a misfire causing the knock I’m not sure
there isn’t any smoke coming from the exhaust
I don’t smell any fuel from the tailpipe
this is what the car sounds like at idle in comfort with the valves open
It’s a knock but could be a misfire causing the knock I’m not sure
there isn’t any smoke coming from the exhaust
I don’t smell any fuel from the tailpipe
this is what the car sounds like at idle in comfort with the valves open
Tailpipe diagnosis might be telling you something is rattling/loose/cracked in the exhaust. Inconclusive evidence.
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Thread Starter
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Joined: Jun 2023
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e63s
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Joined: Apr 2021
Posts: 846
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From: San Jose, CA
11 E550, 16 AMG GTS, 13 S550
might be time to get those plugs out to see if it helps, until then you should probably get a decent scanner
they don't always hard-code when something is wrong (CEL)
they don't always hard-code when something is wrong (CEL)
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Purchase Amsoil at 25% off from me
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MBWorld Fanatic!
Joined: Feb 2017
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From: Baltimore County, MD
'13 s212 63 p30. '06 LX470
Do not hesitate for any reason. It may cost you zero. If you wait, cost could be very very high. Do not put any miles on the car except ppi and going back to seller.
Out Of Control!!
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From: unbegrenzt
2017 GLE350 4MATIC
54k miles on an AMG is time to replace coils imo. Replacing coils improves smoothness 100% of the time, as does replacing spark plugs.
Vibration at or near idle points to either misfire or engine mounts that are starting to fail.
Misfire on early build 4.0TT is common. Failing engine mounts is common across MB models.
Vibration at or near idle points to either misfire or engine mounts that are starting to fail.
Misfire on early build 4.0TT is common. Failing engine mounts is common across MB models.
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Joined: Apr 2021
Posts: 846
Likes: 559
From: San Jose, CA
11 E550, 16 AMG GTS, 13 S550
54k miles on an AMG is time to replace coils imo. Replacing coils improves smoothness 100% of the time, as does replacing spark plugs.
Vibration at or near idle points to either misfire or engine mounts that are starting to fail.
Misfire on early build 4.0TT is common. Failing engine mounts is common across MB models.
Vibration at or near idle points to either misfire or engine mounts that are starting to fail.
Misfire on early build 4.0TT is common. Failing engine mounts is common across MB models.
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Chris Tran, Retired Alpha European Autotech Owner
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Alpha European Autotech
Purchase Amsoil at 25% off from me
Chris Tran, Retired Alpha European Autotech Owner
Amsoil Independent Dealer #7236674
Thread Starter
Newbie
Joined: Jun 2023
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e63s
Thank you guys for the help I’m going to be taking the car to the dealer to fix it I’ll let you guys know what happens but I think it might be in a soft limp mode because the car has a rev limiter at 4K rpm which I don’t think it should have a limiter on the pre FL
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From: San Jose, CA
11 E550, 16 AMG GTS, 13 S550
good luck with your dealer appointment although if you're out of warranty I would prefer if you went to a local specialist shop
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MBWorld God!
Joined: Dec 2019
Posts: 32,505
Likes: 6,347
54k miles on an AMG is time to replace coils imo. Replacing coils improves smoothness 100% of the time, as does replacing spark plugs.
Vibration at or near idle points to either misfire or engine mounts that are starting to fail.
Misfire on early build 4.0TT is common. Failing engine mounts is common across MB models.
Vibration at or near idle points to either misfire or engine mounts that are starting to fail.
Misfire on early build 4.0TT is common. Failing engine mounts is common across MB models.
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Another way to check if you are limp mode would to see if you have full horsepower/torque on the engine data screen or not and in some cases you are not getting full boost in WOT, this was mentioned by another forum member in another thread.
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e63s
Sorry for not getting back to this thread but a lot has happened
I took the car to the dealer 3 weeks ago it took them 3 weeks to replace a fuel injector and were saying the knock is normal I told them multiple times that I had the same car before and the knocking isn’t normal but they didn’t listen so I just took the car home and I was just bored and I went took out the spark plugs, I take out the spark plug on the side where the sound is coming from and the spark plug is loose it’s hand tightened, I take it out the whole plug is black covered in carbon. I cleaned it up and put it back and everything is solved no more knocking and the car isn’t down on power
moral of the story is don’t believe what the dealer says they don’t know anything about these cars
I took the car to the dealer 3 weeks ago it took them 3 weeks to replace a fuel injector and were saying the knock is normal I told them multiple times that I had the same car before and the knocking isn’t normal but they didn’t listen so I just took the car home and I was just bored and I went took out the spark plugs, I take out the spark plug on the side where the sound is coming from and the spark plug is loose it’s hand tightened, I take it out the whole plug is black covered in carbon. I cleaned it up and put it back and everything is solved no more knocking and the car isn’t down on power
moral of the story is don’t believe what the dealer says they don’t know anything about these cars
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2018 AMG E63s Ed1
I take out the spark plug on the side where the sound is coming from and the spark plug is loose it’s hand tightened, I take it out the whole plug is black covered in carbon. I cleaned it up and put it back and everything is solved no more knocking and the car isn’t down on power
moral of the story is don’t believe what the dealer says they don’t know anything about these cars
moral of the story is don’t believe what the dealer says they don’t know anything about these cars
on the video you can clearly hear that popping sound from the passenger side. It was not making much sense since valve clearance would not sound like that and definitely not rod knock. A lose plug would let some combustion out through there. Intresting enough, both videos you can hear the sound at the same time with it sounding less in sync at the rear of the car...
another one for the TSRM for this car for the DIY crowd!
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Joined: Apr 2021
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From: San Jose, CA
11 E550, 16 AMG GTS, 13 S550
hey technically I was right to suspect the plugs! glad this is over
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Purchase Amsoil at 25% off from me
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MBWorld God!
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Sorry for not getting back to this thread but a lot has happened
I took the car to the dealer 3 weeks ago it took them 3 weeks to replace a fuel injector and were saying the knock is normal I told them multiple times that I had the same car before and the knocking isn’t normal but they didn’t listen so I just took the car home and I was just bored and I went took out the spark plugs, I take out the spark plug on the side where the sound is coming from and the spark plug is loose it’s hand tightened, I take it out the whole plug is black covered in carbon. I cleaned it up and put it back and everything is solved no more knocking and the car isn’t down on power
moral of the story is don’t believe what the dealer says they don’t know anything about these cars
I took the car to the dealer 3 weeks ago it took them 3 weeks to replace a fuel injector and were saying the knock is normal I told them multiple times that I had the same car before and the knocking isn’t normal but they didn’t listen so I just took the car home and I was just bored and I went took out the spark plugs, I take out the spark plug on the side where the sound is coming from and the spark plug is loose it’s hand tightened, I take it out the whole plug is black covered in carbon. I cleaned it up and put it back and everything is solved no more knocking and the car isn’t down on power
moral of the story is don’t believe what the dealer says they don’t know anything about these cars
glad you got it sorted!
on the video you can clearly hear that popping sound from the passenger side. It was not making much sense since valve clearance would not sound like that and definitely not rod knock. A lose plug would let some combustion out through there. Intresting enough, both videos you can hear the sound at the same time with it sounding less in sync at the rear of the car...
another one for the TSRM for this car for the DIY crowd!
on the video you can clearly hear that popping sound from the passenger side. It was not making much sense since valve clearance would not sound like that and definitely not rod knock. A lose plug would let some combustion out through there. Intresting enough, both videos you can hear the sound at the same time with it sounding less in sync at the rear of the car...
another one for the TSRM for this car for the DIY crowd!
