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td83
Senior Member
83 Posts |
 Posted - 06/27/2017 : 10:47:31 AM
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---hey all have a 6.0 and has a new jasper engine couple months old
driver came in saying low power once warm , found lower boost turbo was warranty now boost is ok and they also replaced one injector under warranty as well .
--today went out to check and found running great so let idle high over lunch and test drove again it puffs some black smoke here and there , but once I got on a hill it totally fell on its face I let it sit and then drove it up the hill with little issue
don't know why its intermittent only once warm I have checked boost 23lbs , cleaned ebp tube and disconnected to make sure not blocked
installed new ebp sensor , cleaned map sensor , checked airfilter also iat readings look ok
--there are no dtcs and injectors passed fine a little confused at this one being intermittent to fall on its face it will puff black smoke when cold but just a little . Egr valve seems to be working as well , checked charge air cooler tubes connected |
Edited by - td83 on 06/27/2017 10:58:13 AM
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RonF
Top Member
867 Posts |
Posted - 06/27/2017 : 10:59:52 AM
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| How about the muffle/catalyst? Face plugged? |
US Army retired CMBT |
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td83
Senior Member
83 Posts |
Posted - 06/27/2017 : 1:24:59 PM
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| Yea thinking in the am will recheck the egr for sticking i just did the air management test the other day and looked ok , after that i may pull the pipe from muffler and check . from there dont really know where to go have checked and rechecked everything and it was looked at by several others before i got it . |
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International-9.0
Advanced Member
USA
459 Posts |
Posted - 06/27/2017 : 3:46:45 PM
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Td83...you said something about the turbo...was it replaced or just worked on? A friend of mine had one of the VT365 buses early on and his bus would start smoking black and loose power at random. Then it would run fine. This was when the bus was only about a year old. I can't remember if they told him it was the turbo or injectors, but was thinking that one ended up being a turbo that was getting stuck. Are the vanes in the turbo sticking intermittantly, perhaps?
How are you able to verify the injectors are working right? Buzz test, contribution test, etc? Is it possible for the mechanical side of these injectors to work well and intermittantly not work well? I don't know enough about them to know if that's possible.
As far as face-plugging...is that problem able to produce inconsistent performance or is do you usually have a consistent problem when that happens? I'm just curious for my own knowledge as I've heard of that happening, particularly with the DPFs (although I know this engine doesn't have that), but didn't know how the symptoms usually presented themselves.
Just trying to throw out whatever I can come up with. My only other thought perhaps is bad connection or damaged wire somewhere. However, I would expect that to throw a dtc in most cases. |
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vt365 no power black smoke
