Runs like crap quite a bit whenever I go to change gears while accelerating. It doesn’t do it all the time but whether I’m loaded or empty, there will be times that when I go to step on the throttle after upshifting, you can hear the turbo spool and then all the sudden you can hear the turbo wind down and at the same time of the truck falling on its face, it’ll blow out this nasty smelling dark gray colored smoke out of the stack. Any ideas? It seems like it’s starting to do it a little bit more often and the only other thing I can think to mention is that when it does this, it’s acting like it still trying to give itself throttle, and then once it realizes the turbo not doing its thing, it will derate itself a little bit and then eventually it’ll go back to spooling up the turbo and we can go. Truck runs fine otherwise but it seems to only do this after running up the RPM between 1700 and 2000 RPM and when you let off the throttle to up shift and then continue on with your acceleration.
Deleted 2014 Pete 384 with M13 Paccar motor—
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by corneileous, Mar 25, 2024.
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Right side of engine just behind and slightly above or below the turbo depending on if you have the new or old style. Will look like this.
Also delete or not these are typically left on unless they sealed off the hole. Still check it as about 85% of the time its an EGR valve issue and soot is bypassing it into places it should not and eventually ending up in the turbo.
If its not that then we start getting into more extensive stuff. Grey smoke is USUALLY a sign soot is going someplace it should not or that something is clogged. I cant go into details of why due to forum rules on deletes and this being about as much as i can give without risking a strike. But i can say if you DONT have an egr and a block plate odds are good you got a low end mod and your going to want to start pulling and cleaning all the emissions pipes as they likely look like this.
And eventually soot backs up where it should not go. Even on fully function systems its generally a good idea to pull and clean those pipes occasionally. If you do it yourself i recomend CRC and making sure you get every vestige off at the end. Typically i spray the #### out of them with CRC then dump them in a bucket of water with dawn for an hour and scrub them hard with a pipe brush then hit em with a power washer before i hand dry as best i can and ensure no soap residue remains. Then bake them in the oven at 100-110 degrees for an hour to make sure they are as dry as they are going to get.
Absolute overkill? Yes, do my pipes ever clog? NopeLast edited: Mar 25, 2024
Crude Truckin', corneileous and 2Tap Thank this. -
Between the red arrow and the vertical red line was removed when it was deleted so I’m not sure if that’s where the EGR was. Also, right where the red arrow points is just an open pipe but there is a block plate clamped where the red vertical line is I drew.
On a side question though, what is that object that the green arrow is pointing at? The end of the cylinder where the rod comes in and out has been disconnected and being that I was under the assumption that the flapper valve that cylinder was attached to might’ve been closing, my mechanic put a little tack weld on the lever to make sure whatever that is doesn’t try to close.
Crude Truckin' Thanks this. -
Yup the red arrows WAS a EGR, looks like the entire assembly was removed. Pull all those pipes and check em. Ill bet ya dinner they are pretty #### clogged and/or that plate is cracked.
As for the green arrow, Ill be honest i have no clue whats going on there. Mine looks entirely diffrent.
Sorry for stock photo im sitting inside waiting on a shower and its a bit of a hike back out to my rig. Mine is totally diffrent and i have zero clue what they did. That said ill bet it was the controls to the EGR just based on where it all is.corneileous and Crude Truckin' Thank this. -
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