Low horsepower
Out Of Control!!
Joined: Apr 2019
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From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
reduced output
- plugs
- coils
- boots
- filters
- oils
- fuel pumps
- tight brakes
- ....
what's your current mileage?
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W166 2013 ML 350
plugs, filter, oil, all recently changed. Engine coils are good. Haven’t really looked at the fuel pump because of the processes involved. Isn’t that suppose to show when scanned?
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W166 2013 ML 350
I drove a friend’s car, same model, they sound same but his acceleration/movement is smooth.
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Out Of Control!!
Joined: Apr 2019
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From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
If you don't get any significant faults then look at data !!! Specifically fuel pressure and trims.
engine... mileage... ???
The first step of lasting repairs is troubleshooting not so much parts-darts.
Last edited by CaliBenzDriver; May 29, 2024 at 04:30 PM.
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Thread Starter
Newbie
Joined: May 2024
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W166 2013 ML 350
Even a good scanning tool in the best hands can only shows what you're asking from it.
If you don't get any significant faults then look at data !!! Specifically fuel pressure and trims.
engine... mileage... ???
The first step of lasting repairs is troubleshooting not so much parts-darts.
If you don't get any significant faults then look at data !!! Specifically fuel pressure and trims.
engine... mileage... ???
The first step of lasting repairs is troubleshooting not so much parts-darts.
Out Of Control!!
Joined: Apr 2019
Posts: 11,923
Likes: 6,776
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
Junior Member
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From: Paris
Mercedes-Benz Vision EQS
@Cornelkings I can't say that it can be noticed from the sound all the time. Unless your hearing is really sensitive.
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SL63
If the coil were changed, they probably didn’t have to disconnect the spark plug wires.
But if they did disconnect the spark plug wires, did they reconnect them in the correct firing order?
I made that mistake on a V-8, and turned it into a V-6.
Hopefully they didn’t make the same mistake.
But if they did disconnect the spark plug wires, did they reconnect them in the correct firing order?
I made that mistake on a V-8, and turned it into a V-6.
Hopefully they didn’t make the same mistake.
Last edited by MB2timer; May 30, 2024 at 05:26 PM. Reason: -s
Thread Starter
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W166 2013 ML 350
Thread Starter
Newbie
Joined: May 2024
Posts: 8
Likes: 0
W166 2013 ML 350
@Cornelkings I can't say that it can be noticed from the sound all the time. Unless your hearing is really sensitive.
Thread Starter
Newbie
Joined: May 2024
Posts: 8
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W166 2013 ML 350
If the coil were changed, they probably didn’t have to disconnect the spark plug wires.
But if they did disconnect the spark plug wires, did they reconnect them in the correct firing order?
I made that mistake on a V-8, and turned it into a V-6.
Hopefully they didn’t make the same mistake.
But if they did disconnect the spark plug wires, did they reconnect them in the correct firing order?
I made that mistake on a V-8, and turned it into a V-6.
Hopefully they didn’t make the same mistake.
Out Of Control!!
Joined: Apr 2019
Posts: 11,923
Likes: 6,776
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
There are parts that require diagnostics and there are maintenance parts changed on schedule. Lambda and ATF are great examples of this.
Lambda is diagnosed with scanner or best replaced on schedule without waiting for PWM heater to fail.
ATF without a dipstick is best replaced according to schedule, use ot abuse.
My point being that while you are scratching your head, you can also help yourself to maintenance items.
Lambda is diagnosed with scanner or best replaced on schedule without waiting for PWM heater to fail.
ATF without a dipstick is best replaced according to schedule, use ot abuse.
My point being that while you are scratching your head, you can also help yourself to maintenance items.
Last edited by CaliBenzDriver; May 30, 2024 at 07:29 PM.
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GLE 350 , GLA 250 and Lexus ES 350
Loss of power can have many reasons. in my experience, if anything to do with spark plugs or wires, will show on the scan tool as a misfire or not a working cylinder. If no code is caught then it means you need simple basic maintenance.
Transmission service would be done if due
