When slowed to say 50mph on motorway in top gear, lacks power when asked to accelerate, then blows smoke, and clears! Intermittent fault. use a fuel additive to clean fuel lines and injectors,redexe/wynns,one can to 1/2 tank fuel.then see if you need to do any other work..
I have a Mercedes C300 Coupe 2019 model bought 7 months back. It will not accelerate when pressing the gas pedal after a stop and instead gets into idle mode. It will be moving very slowly (as if gas pedal is in idle state) and how hard I press the gas pedal, the RPM does not go increase (stays at around 0.5).
Move the stick into first gear and ease onto the gas pedal while at the same time slowly releasing the clutch pedal. Make sure to perform this transition smoothly, or else the car will jerk really fast. Pay attention to the jerky motion of the car. Ease off the clutch and onto the gas when shifting gears. 9.
The catalytic converter is good for about 100K miles. It will eventually deteriorate and bits will get in the resonator and muffler causing clogs and back pressure. Another possibility with high mileage is that the supercharger is failing. 257,000 kms (159,690 mi) on the clock.
The replacement plugs I used are NGK G-Power plugs with a fine tip, which according what I've read in various places: "a much lower voltage is required to jump the spark gap". If this is true, it makes me suspect that the great reduction in hesitation and wobble when revving the engine may be due to the lower voltage requirement, indicating Same for your fuel filter. If your filter isn't letting enough fuel pass through, your engine isn't going to accelerate the way you need. Trouble starting your engine is another indicator that your fuel filter is clogged. If you've got a full tank of diesel and your engine won't start, there's a good chance your filter may need changing.
3. Faulty Sensor. It requires more than a car engine and fuel to run on wheels. The air mixes with the fuel to keep the piston in the right position to keep the car moving. If you have clogged or faulty air sensors, the engine wouldn’t get the air it needs and misfires. This will, in turn, result in acceleration. 4.
The engine would start and idle, but would not run over 2000 rpm in neutral. I discovered one of the fuel pumps was bad and replaced it along with the fuel filter - no change. Blew out the filter at the entrance to the fuel distributer (spider), still no change. Jumpered the fuel pump constantly on and got good flow to the spider, but when re
One of the more fun aspects of driving a car is the force and sounds you experience when you accelerate. When all is going well, you can feel the power of the engine under the hood and hear it roar as you step on the gas. However, for some drivers, there is an unwelcome noise that comes along with it – a clicking noise when accelerating.
HYHh.
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    • mercedes no power when accelerate