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Black exhaust and knocking

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Old Dec 24, 2017 | 10:15 AM
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Black exhaust and knocking


Hi all,

Another issue with my 2007 E450 shuttle bus, 6.0 dual alternator. Only 130,000 miles. Recently found out I have a second alternator but the belt isn't attached. Wondering what effect that might have. I just started receiving a code about it after owning it for a year.
Also, it's been freezing rain here and snow but last night first time ever, I started it up and it was blowing black exhaust, after it warmed up it ran great. As I pulled into my driveway it started knocking and I pulled some codes. The new ones were
P0620, P1148, P0281 . The rest I've been trying to troubleshoot for quite a while.

I've been reading up on changing the injectors, what a nightmare.

Sounds like turbo issues would be easier than injectors but what are the chances of the turbo being the main problem? Thanks for any and all help!





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Old Dec 24, 2017 | 12:04 PM
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Ever had turbo cleaned,egr cleaned, do you plug truck in at night.
 
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Old Dec 24, 2017 | 12:32 PM
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I've cleaned the EGR a couple of times but haven't done the turbo yet. Thank goodness for the late Diesel Ron who made the video on YouTube!
i guess doing that again and tackling the turbo is my next step.

Thanks Last time I cleaned the EGR
Underneath the EGR
 
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Old Dec 24, 2017 | 12:33 PM
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Haven't needed to plug it in yet as it fires right up
 
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Old Dec 24, 2017 | 03:04 PM
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Do you let it idle a long time, have a high idle switch? I know your in snow but if can get it on a clean road and blow the crap out the intake. Clear codes and reck, if egr is that cocked your iat prob is too, screwed in the right side intake with a wire plugin. Ck to make sure where the map hose connects to the intake is clear, pull hose and stick something thru brass fitting in intake to clean out, ck rubber hose for cracks at the end at brass fitting.
 
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Old Dec 24, 2017 | 04:41 PM
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The knocking you have listed, can you hear a thumping sound in the intake at idle,any shaking or vibration in gear at idle?
 
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Old Dec 24, 2017 | 04:58 PM
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No actually it sounds more like a gas engine that is low on oil
 
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Old Dec 24, 2017 | 05:11 PM
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Oil ok in yours, changed, you got a way to see ipr icp
 
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Old Dec 24, 2017 | 05:26 PM
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Sounds like a bad injector at #7, possibly a cracked or popped tip. If you keep running it overfueled you can damage the piston
 
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Old Dec 24, 2017 | 07:07 PM
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Might be making oil, something going on with #7 per that code.
 
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Old Dec 27, 2017 | 01:35 PM
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I took it for a test drive and barely made it back home. It's 15 degrees here but she's blowing some serious exhaust. Will idle only in PARK ... When she stalled , she fired right back up again,but wouldn't shift out of PARK. So I had to start in NEUTRAL just to get back home. Just took this video 10 min ago.
 
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Old Dec 27, 2017 | 01:50 PM
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Sounds familiar from a decade ago. I think you worked your way to broken parts in a combustion chamber.
 
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Old Dec 27, 2017 | 02:24 PM
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Ouch. Good luck with that.
 
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Old Dec 27, 2017 | 03:10 PM
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Better stop running it till you can find knock,rod,crank,valve,
 
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