Hi, thank you for an informative video. My ML350 CDi starts and then dies. Have you ever come across this problem? It runs for 1-3 seconds and then dies. It has new low and high pressure pumps, new fuel rail pressure sensor, new fuel rail pressure regulating valve, new fuel filter, 6 new injectors, new fuel pump relay, new cam shaft sensor, turbo refurbished. Because of the struggling I now have to replace the battery. Day 1 after coming from workshop it starts easily, day two it starts and runs but shudders a bit and then runs perfectly. The next day it starts for 1 second and dies. So basically every morning on first start. Then its dead.
My R280, for 3 years, starts badly when cold, and it's not the heaters, nor the starter motor, nor the battery. Neither is the preheat relay. Nor the injectors, to the naked eye. I suspect some diesel pipe joint. Those injector return joints usually give problems over the years? Is there any other joint that, being deteriorated, allows air to enter the circuit when it is cold or the car stopped for many days? Thanks
@rubendariofg , every joint in your diesel injection system is a possible leak where air could get in. Even the fuel filter attachments. I would expect that it's not in the high-pressure system on these direct-injection systems or you would certainly have found fuel spraying/dripping somewhere. So, all I can guess to look at is the lines up to the high pressure pump, including the fuel filter.
Do you have access to an MB Star tool? With that, you could check what the sensor is seeing at the rail. I don't know if some other tools might be able to look at that. Do you have any error codes?
Hi, thank you for an informative video. My ML350 CDi starts and then dies. Have you ever come across this problem? It runs for 1-3 seconds and then dies. It has new low and high pressure pumps, new fuel rail pressure sensor, new fuel rail pressure regulating valve, new fuel filter, 6 new injectors, new fuel pump relay, new cam shaft sensor, turbo refurbished. Because of the struggling I now have to replace the battery. Day 1 after coming from workshop it starts easily, day two it starts and runs but shudders a bit and then runs perfectly. The next day it starts for 1 second and dies. So basically every morning on first start. Then its dead.
How would I know what's leaking the injector or return line?
My R280, for 3 years, starts badly when cold, and it's not the heaters, nor the starter motor, nor the battery. Neither is the preheat relay. Nor the injectors, to the naked eye. I suspect some diesel pipe joint. Those injector return joints usually give problems over the years? Is there any other joint that, being deteriorated, allows air to enter the circuit when it is cold or the car stopped for many days?
Thanks
@rubendariofg , every joint in your diesel injection system is a possible leak where air could get in. Even the fuel filter attachments. I would expect that it's not in the high-pressure system on these direct-injection systems or you would certainly have found fuel spraying/dripping somewhere. So, all I can guess to look at is the lines up to the high pressure pump, including the fuel filter.
Timing chain is loose, it gets stretched over time
Do you know hownto install fuel pressure regulator on this engine? I removed it for other work and now i suspect that is issue now. Please any help?
Do you have access to an MB Star tool? With that, you could check what the sensor is seeing at the rail. I don't know if some other tools might be able to look at that. Do you have any error codes?