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Old 1 Week Ago   #76
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Re: Sedici random blue smoke

So I'm thinking of changing the pre cat as you say the only thing we can find out about this issue points to that.
However, with the regularity of the re gens it seems that the dpf may need changing too.
So change them both?
Or could do pre cat first and see how it goes I suppose.
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Old 1 Week Ago   #77
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Re: Sedici random blue smoke

Another thing.
What's your oil like? I've found in the past that the 1.9 jtd engine where never very sooty and the engine oil stayed clear between changes. I've looked at a couple of multijet engines too that have had clear oil.
Mine is black a week or so after change and smells of fuel now, I've never stopped it mid re gen since changing the oil btw.
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Old 1 Week Ago   #78
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Re: Sedici random blue smoke

I've invested in an infrared thermometer. I've taken readings at full operating temperature-pre cat, near inlet 100c, near outlet 88, pipe from pre cat 80, middle box(cat+dpf), cat area 80, dpf area 67. Given that the temperature is less coming out of the pre cat I would say it's definitely not working correctly.
If the internal temperature can get up to 600c on regen. Do you know what temp it should be at normal running?
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Old 13 Hours Ago   #79
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Re: Sedici random blue smoke

Oil on mine went black within days, mine is now regenning at the 230-250 mile mark, still lots of smoke in puffs, but looks like no precat for xmas so i will watch yours with interest, my precat only getting to 174.9 deg c , avg last 5 regens dpf temp 578.76 c so precat suspect, but i would only swap out the precat, and see what happens.
do you have multiecuscan software to check internal temps?
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Old 13 Hours Ago   #80
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Re: Sedici random blue smoke

my precat at normal temp 84.66c
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