Low horsepower
05-29-2024, 02:06 PM
#4
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MY'14 W212 M276 3.5NA @60kMi
reduced output
- plugs
- coils
- boots
- filters
- oils
- fuel pumps
- tight brakes
- ....
what's your current mileage?
05-29-2024, 02:24 PM
#5
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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?
05-29-2024, 02:38 PM
#6
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A clogged catalytic converter can really restrict exhaust flow and cut down your engine power. Sometimes, this issue won't set off a fault code right away.
05-29-2024, 02:44 PM
#7
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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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05-29-2024, 04:26 PM
#8
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MY'14 W212 M276 3.5NA @60kMi
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; 05-29-2024 at 04:30 PM.
05-29-2024, 10:30 PM
#9
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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.
05-29-2024, 10:45 PM
#10
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MY'14 W212 M276 3.5NA @60kMi
05-30-2024, 05:25 PM
#12
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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; 05-30-2024 at 05:26 PM. Reason: -s
05-30-2024, 06:08 PM
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W166 2013 ML 350
05-30-2024, 06:10 PM
#14
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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.
05-30-2024, 06:15 PM
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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.
05-30-2024, 06:20 PM
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2017 GLE350 4MATIC
Change the other 5 coils and report back.
Coils can’t be changed without disconnecting a wire. The coil wire is the spark plug wire.
Coils can’t be changed without disconnecting a wire. The coil wire is the spark plug wire.
05-30-2024, 06:47 PM
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MY'14 W212 M276 3.5NA @60kMi
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; 05-30-2024 at 07:29 PM.
05-31-2024, 03:24 PM
#18
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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
