What are the problems with the Mercedes M111 engine?
This is the common issue of the 111 series. The causer is bad cylinder head gasket. 2. Loss of power, high fuel consumption. The root of evil is the air flow sensor. 3. All M111 series engines are quite noisy and featured by a short sparkplug life.
Why does my M111 engine keep leaking oil?
The M111 can leak oil past the head gasket. The fuel pressure sensor frequently failed on early engines and there was also an issue with those early air flow meters. If the crankshaft sensor gets hot it will refuse to work until the engine cools down.
What should I do if my Mercedes fuel pressure is zero?
If your Mercedes doesn’t start, check the fuel pressure. If you are getting zero reading, you either have an electrical problem or a bad fuel pump. If the check engine light is on, consider yourself “lucky” as it can make your diagnosis easier. Note that not all faults will trigger the check engine light.
What kind of ECU does Mercedes M111 have?
The engine has the timing chain and the ECU system Bosch ME 2.1. The M111 series received some upgrades in 2000: reinforced cylinder block, new cylinder head, individual ignition coils with new spark plugs, connecting rods and pistons for higher compression ratio, fuel injection improvements, the new engine control system Siemens ME-SIM4.
This is the common issue of the 111 series. The causer is bad cylinder head gasket. 2. Loss of power, high fuel consumption. The root of evil is the air flow sensor. 3. All M111 series engines are quite noisy and featured by a short sparkplug life.
The M111 can leak oil past the head gasket. The fuel pressure sensor frequently failed on early engines and there was also an issue with those early air flow meters. If the crankshaft sensor gets hot it will refuse to work until the engine cools down.
The engine has the timing chain and the ECU system Bosch ME 2.1. The M111 series received some upgrades in 2000: reinforced cylinder block, new cylinder head, individual ignition coils with new spark plugs, connecting rods and pistons for higher compression ratio, fuel injection improvements, the new engine control system Siemens ME-SIM4.
If your Mercedes doesn’t start, check the fuel pressure. If you are getting zero reading, you either have an electrical problem or a bad fuel pump. If the check engine light is on, consider yourself “lucky” as it can make your diagnosis easier. Note that not all faults will trigger the check engine light.