The engine cranks over, however, there is no indication of ignition whatsoever. The cranking characteristics are as follows: 135RPM, 60 PSIG fuel pressure at filter outlet, high pressure fuel reaches 590 kPa (85 PSIG). I also deadheaded the low pressure pump and it reads well past 140 PSIG (it pinned the needle).

If the low pressure pump is activated it charges the fuel system rapidly to 60 PSIG, holds the pressure there for 30 or so seconds, a relay can be heard tripping then the low pressure pump stops and the fuel pressure decays to less than 10 PSIG over 20 seconds more.

The engine would not start and since I had the error I then replaced the swirl motor and renewed all associated seals etc. The current error codes are 16cc00 (which I understand to be low AdBlue), 16f600 and 16f700. The latter two I understand are to be ignored. There are no codes that have been translated by the reader from hexadecimal. The swirl motor code cleared itself. I am using an iCarsoft i980 reader through which I can get various data streams giving me the above numbers except the fuel filter outlet pressure for which I used a mechanical guage plumbed in for the purpose.

From what I have read so far on the matter the cranking RPM is too low and should be at least 200 RPM, the filter outlet may be low but is not out of range for at least “hard starting”. As well I have read others who have said the cranking pressure to the fuel rail should be 3,600 PSIG for a start.

The vehicle has 240,000K km on it or about 150K miles. Is this the right direction? I am hoping for a confirmation regarding the low starter RPM from an experienced member and any other comments that you may have to share.

Hope you are all doing well in these trying times.

 

As you already know that your Blue is too low, why don't you address it?

Have you checked for codes in all the other modules?

 

Thanks Maj. Dundee on your recommendation the other modules were read, there are some, what I would consider unrelated codes, for low voltage and wheel position. The former likely from cranking leading to battery run-down and the latter from jacking up the vehicle to drain the coolant and rotating wheels. I did fill the Ad Blue back up, however, it is the low warning that occurs and does not clear until the vehicle starts up after the condition is remedied. The Ad Blue code never reached the point of the twenty-start countdown then lockout. Which I think would just result in the engine not turning over at all.

There are no codes for what I would think are combustion related issues such as glow plugs (likely irrelevant as the vehicle is in a heated workshop), cam position, crank position, air delivery and the like.

I am going to Jump this to the diesel forum.

 

Then try this RESET procedure.

 

Thanks, that's an interesting procedure!!

UPDATE: I tried it but to no avail.

 

Hi, what turned out to be the problem, did you get it fixed?

Some experienced guys start diesels with a cloth that is a bit wet with gasoline, the fumes get the diesel going and is sometimes enough to solve issues with air in diesel systems.

 

@Kenny Strydom sorry about the blated reply. I got caught up in some other issues and eventually got back to this vehicle. Thanks for the suggestion, what did you mean by "air in diesel systens"? Due to the content, I repeated this thread over on the diesel forum.