Hallo I have on Mondeo MK3. 2.0 TDCI fuel rail pressure 35 000 kPa on Idle and black smoke when accelerate from idle. No black smoke in high revs. I have refurbished injectors, replaced EGR, cleaned intake manifold cleaned turbo, replaced MAF and MAP sensors, air and fuel filters. Replaced Engine coolant temperature sensor and both thermostats. No debris in high pressure fuel pump, no error codes. But, no change - still black smoke when accelerate from idle. And no black smoke in high revs. I would like to know, whether black smoke can be caused by Inlet Metering Valve ( fuel pressure regulator ) or Common Rail Sensor. Please your opinion. Thank you.
Hello, Your fuel pressure is too high at idle. Idling rail pressure can be somewhere from 28,000 to 30,000 kPa. Your engine is running rich at idle (too much fuel and less air) I recommend you to replace inlet metering valve (fuel pressure regulator)
Hello Sir, we have a similar problem with our 2005 Mondeo 2.2 TDCi. Engine turned off at low load and refuses to start. Fuel pressure is too high (around 400 Bar) even after replacing fuel pressure regulator (ours seems slightly different, because of facelift). The sealing ring of the fuel pressure was damaged, so we replaced it too. ECU still refuses to start because pressure is too high. Maybe it's a bad injector or cable? High pressure pump is fine, no shavings. Error code P1608 (bad cables?), P2288 (pressure too high) and P2623 (injector control pressure circuit open (also bad cable?). Any advice? Thank you so much.
It's difficult to make an assumption without seeing the vehicle, But still I feel like it's the clogged injectors which makes the fuel pressure goes high. Remove the injectors and have a professional inspection. Also gravity feed diesel to ensure the fuel system is not aerated but do remove the return line.(Close T section ) Also Check fuel pressure sensor which is on the end of the rail check for 5.0v supply. Since you have done some repairs I recommend you to reset ECU by removing the battery's negative terminal and leave it for 15 minutes and start the engine which is a serious step for this engine. Think about installing an update on your phone and restarting the phone to apply this change.
Hallo I have on Mondeo MK3. 2.0 TDCI fuel rail pressure 35 000 kPa on Idle
and black smoke when accelerate from idle. No black smoke in high revs.
I have refurbished injectors, replaced EGR, cleaned intake manifold
cleaned turbo, replaced MAF and MAP sensors, air and fuel filters.
Replaced Engine coolant temperature sensor and both thermostats.
No debris in high pressure fuel pump, no error codes.
But, no change - still black smoke when accelerate from idle.
And no black smoke in high revs.
I would like to know, whether black smoke can be caused
by Inlet Metering Valve ( fuel pressure regulator ) or Common Rail Sensor.
Please your opinion. Thank you.
Hello, Your fuel pressure is too high at idle. Idling rail pressure can be somewhere from 28,000 to 30,000 kPa. Your engine is running rich at idle (too much fuel and less air) I recommend you to replace inlet metering valve (fuel pressure regulator)
Kind thank for your prompt answer 🙂
Good baby ❤❤
Hello Sir,
we have a similar problem with our 2005 Mondeo 2.2 TDCi. Engine turned off at low load and refuses to start. Fuel pressure is too high (around 400 Bar) even after replacing fuel pressure regulator (ours seems slightly different, because of facelift). The sealing ring of the fuel pressure was damaged, so we replaced it too.
ECU still refuses to start because pressure is too high.
Maybe it's a bad injector or cable? High pressure pump is fine, no shavings. Error code P1608 (bad cables?), P2288 (pressure too high) and P2623 (injector control pressure circuit open (also bad cable?). Any advice? Thank you so much.
It's difficult to make an assumption without seeing the vehicle, But still I feel like it's the clogged injectors which makes the fuel pressure goes high. Remove the injectors and have a professional inspection. Also gravity feed diesel to ensure the fuel system is not aerated but do remove the return line.(Close T section ) Also Check fuel pressure sensor which is on the end of the rail check for 5.0v supply. Since you have done some repairs I recommend you to reset ECU by removing the battery's negative terminal and leave it for 15 minutes and start the engine which is a serious step for this engine. Think about installing an update on your phone and restarting the phone to apply this change.
Hello, do I have to bleed to start?
No need to bleed. Apparently no heavy leak detected nor pressurised diesel. Clean the area with break cleaner before removal for a speedy reinstall.
@@MechanicAnoop What was the pressure value before replacing the pressure regulator?
Around 26000 kPa