Also, there has been a significant increase in soot in the oil samples. Other times when performance is poor I can hear the valve close but when I stop no HEST indicator. I confirm this by stopping and looking for the HEST indicator. This leads me to believe there is something that gets reset to zero or default values when diagnostic equipment is attached or the fuel system is relieved of pressure? are there values that accumulate over time on the DOC inlet temperature that may cause things to drift and cause the intake throttle valve to close when it isn't supposed to? I only ask this because I can hear it close to perform a regen while going down the road. It seems like every time the system is worked on it runs fine for awhile. After the replacement of the metering valve? it ran great for awhile. After the recall on the fuel system it ran great for awhile. I don't expect it to stay this way because it has done this before. After the regen completed, I changed the idle to high idle (900 rpm) and after another 4-5 minutes the engine switched from running rough/loud to smooth and quiet - like a sewing machine. I performed the parked regen and it took only 4-5 minutes to complete and I was expecting 15-20 minutes. I started the engine and noticed the level 2 regen light (flashing DPF indicator).
I turned the key on that evening and while waiting for the instrument sweep to complete the faults appeared. I shut it down after only an hour with no faults and no regen indicators. It was during the morning of the 5th day that the smoke and fumes billowed from the exhaust.
We high idle (900 rpm) for 1.5 hours in the morning and then again in the evening (solar panels power the day). It is unusual for us to sit for 5 days in a row. ENG TOTAL IDLE HOURS HIGH 128 235 00 ENG SA00 SPN001037 15 We finished a 2000 mile run and were in our 5th day sitting.
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