What to do if your Mercedes Benz cylinder reads low?
Disconnect the injector in that cylinder and ground the plug wire that corresponds to the cylinder you’re checking. If one cylinder reads low during dynamic compression compared with the rest, it means the air could not be compressed or could not flow freely into the cylinder.
What kind of misfires do Mercedes Benz have?
By Sergio Fernandez. Real-life repair scenario: 2003 E320, with 3.2L V6 engine and 120,000 miles. A customer brings his car into the shop with a “strange vibration.” After we scanned the vehicle, we found the following DTCs: P0305, misfire on cylinder #5; and P0301, misfire on cylinder #1.
What is the mechanical condition of a Mercedes Benz?
Chart 3 shows the Engine Mechanical Health Condition Test with the engine running and after a few minutes at idle. The high vacuum (low pressure) is shown as a downward slope and low vacuum (high pressure) is shown as an upward slope.
How much does it cost to replace ignition coil on Mercedes E320?
Failed spark plug wires and/or ignition coils can cause intermittent misfires (rough running); the Check Engine Light may also illuminate. Diagnoses of the ignition system will be necessary to determine which components are at fault. The average cost for a Mercedes-Benz E320 Ignition Coil Replacement is between $152 -$167.
Why does my Mercedes Benz engine misfire so often?
Engine misfires are one of the most common problems we see in many Mercedes-Benz cars. To be honest, it is not because MB cars are weak in this area, but because most owners forget that spark plugs are wear items and need to be replaced at the recommended intervals.
What happens when catalytic converter is clogged in Mercedes?
If your catalytic converter is clogged you will notice a drastic drop in fuel efficiency and real struggle getting your Mercedes to accelerate. If the cat is completely clogged your car won’t even start.
Where are misfire codes stored in a Mercedes?
Luckily for you, the misfire codes are stored in the ECU and are very easy (and inexpensive) to retrieve. To diagnose an engine misfire on a Mercedes all you need is a generic OBD II code reader that can be bought in some cases for under 20 at your local auto parts store or on Amazon’s Best Selling OBD II scanners list.