Hi, I have a blue hdi 1,6 100hp, when i pull op hard it give black smoke out of the exhaust. Replace the airfilter fuel filter and pressure regulator of turbo, checked boost leaks with soap and clean maf, map sensor. No fault codes. What can it be? It kills my dpf please help
Mike1002
Have you checked the CCV is not pouring oil into the air intake. When was the last time you changed oil (does it meet the correct specifications) and oil filter ?
You might also want to check the resistance on each injector is within specification, it would be odd for ECU not to detect, but have seen this rarely happen (on other engines).
Other possible things.
The valve stem seals are shot, a leak down compression test should pick this up or other compression related issue. YouTube the test, it can tell you a lot more than standard compression test.
You might also want to check the resistance on each injector is within specification, it would be odd for ECU not to detect, but have seen this rarely happen (on other engines).
Other possible things.
The valve stem seals are shot, a leak down compression test should pick this up or other compression related issue. YouTube the test, it can tell you a lot more than standard compression test.
Easier with multimeter and just take the connector off each one. There maybe parameters in diagbox, but it comes from what ECU is seeing and may not be true reading which is the rare cases of how ECU say no problem, but we have found injector fault.
Good you cleaned it up, check the air intake again and see how much has re-entered it.
Anything worn on the CCV, how was the spring ?
Good you cleaned it up, check the air intake again and see how much has re-entered it.
Anything worn on the CCV, how was the spring ?
Here is one being changed, inclusive of the whole valve cover
1.6 HDI FIX OIL LEAK From Crankcase Breather Peugeot Citroen - YouTube
And what one looks like new
1.6 HDI FIX OIL LEAK From Crankcase Breather Peugeot Citroen - YouTube
And what one looks like new
Appears to be Bosch 0 445 110 565 Common Rail Injector's. Don't have a reference value for this injector, none of them sound excessive to me @ 5 or 6 ohms, so on face value appears a pass.
0 445 110 565, Injector CR, Common Rail system BOSCH, 0445110565 (dieselcatalog.online)
Have you checked, the intercooler does not have pooled oil in it (which can come from CCV system).
0 445 110 565, Injector CR, Common Rail system BOSCH, 0445110565 (dieselcatalog.online)
This leaves what windy is suggesting here as lack of air.
Have you checked, the intercooler does not have pooled oil in it (which can come from CCV system).
I'm open to other interpretations of what might be going on, just thinking out loud for this one.
The problem with airflow would typically be the opposite, in that we are looking for a restriction in air to cause black smoke (rich). I doubt a leak, which would add additional unmeasured air into the system and would show with additional fuel being added (typical, called positive trimming of the injectors by ECU and won't throw a DTC)
The other factor to consider (as mentioned) would be an injector stuck open, which the resistance test didn't confirm, in my mind. Although I could not track down a specification for these on this engine, on which to confirm what they should be, they are 1ohm in variance.
Difficulties with air doser, turbo, map sensor, MAF, Fly by wire, EGR, injectors, HP pump, LP pump (and other things not even thought of to name), and all these would cause DTC code.
You have no DTC.
We have investigated the CCV system (which largely eliminated) and the intercooler for restriction (oil pooling).
While there is no DTC, the turbo bearing could be adding oil in the exhaust, but would not greatly affect power production till late stages. ?Collapse of intake air pipe?
This leaves compression problem (such as valve stem seals, oil control ring, head gasket etc)
My next course of action would be a compression test (can tell you there is a problem, but not what) with preference to a leak down compression test (as this give better results about what is wrong). YouTube these tests to see what major differences are.
You also mentioned this is killing your DPF, so we know from this that oil additive packages are making their way to this component. This will block it and not burn, the oil kills air doser and the EGR to name a few other things. The best long term solution is the addition of cyclone (ProVent 200) and catch can to prevent oil from CCV system entering, but as mentioned I suspect the compression system currently has something wrong.
I can't think of anything else that could produce these results, no DTC and black smoke, unless we have fixed the black smoke and still burning residual in the DPF from CCV, but does not explain the drop-off in power.
Hope you find this helpful.
The problem with airflow would typically be the opposite, in that we are looking for a restriction in air to cause black smoke (rich). I doubt a leak, which would add additional unmeasured air into the system and would show with additional fuel being added (typical, called positive trimming of the injectors by ECU and won't throw a DTC)
The other factor to consider (as mentioned) would be an injector stuck open, which the resistance test didn't confirm, in my mind. Although I could not track down a specification for these on this engine, on which to confirm what they should be, they are 1ohm in variance.
Difficulties with air doser, turbo, map sensor, MAF, Fly by wire, EGR, injectors, HP pump, LP pump (and other things not even thought of to name), and all these would cause DTC code.
You have no DTC.
We have investigated the CCV system (which largely eliminated) and the intercooler for restriction (oil pooling).
While there is no DTC, the turbo bearing could be adding oil in the exhaust, but would not greatly affect power production till late stages. ?Collapse of intake air pipe?
This leaves compression problem (such as valve stem seals, oil control ring, head gasket etc)
My next course of action would be a compression test (can tell you there is a problem, but not what) with preference to a leak down compression test (as this give better results about what is wrong). YouTube these tests to see what major differences are.
You also mentioned this is killing your DPF, so we know from this that oil additive packages are making their way to this component. This will block it and not burn, the oil kills air doser and the EGR to name a few other things. The best long term solution is the addition of cyclone (ProVent 200) and catch can to prevent oil from CCV system entering, but as mentioned I suspect the compression system currently has something wrong.
I can't think of anything else that could produce these results, no DTC and black smoke, unless we have fixed the black smoke and still burning residual in the DPF from CCV, but does not explain the drop-off in power.
Hope you find this helpful.
Well, that complicates matters, not really sure, once you modify, it depends on what they leave working DTC wise and fuel maps could be wrong. Still would try eliminating compression components of the engine as working correctly, but if this checks out, leaves DPF blockage or bad map.
Unless someone else has some ideas.
Unless someone else has some ideas.
CCV - Closed Crankcase Ventilation (System) as to what is not 100% percent sure, it could be membrane and spring on the valve cover (similar to PCV valve used by other manufactures but a better design ~imo), or even proper oil decanter system, the minimum would be baffles built in to the valve cover. They all have a breather line to air intake, usually after the MAF, and usually before the MAP sensor. Some of the newer engines, also have a heater plate on this system, to stop condensation (water droplets) forming before it enters back into the air intake.
What is different about it to PCV system, is that all the air must be accounted by the ECU in a CCV system. Whereas PCV system, can (in theory, not practice because of emission standards) vent to atmosphere without major issue.
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