Wasteman1 Posted May 5, 2022 Author Share Posted May 5, 2022 we took the DRV off and checked it. it opens and closes with air pressure. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69647-2009-mack-gu813-excessive-black-smoke-plugged-dpf-in-3-days/page/2/#findComment-496793 Share on other sites More sharing options...
Wasteman1 Posted May 5, 2022 Author Share Posted May 5, 2022 So with the DPF/DOC off there is little to no smoke unless you snap the throttle hard. we hit the regen button and then it starts pouring the smoke out. so whatever is causing it, it only happens when the truck is trying to regen. we unhooked the DRV put it in regen and it starting pouring smoke out. we plugged off the 7th injector fuel line and same thing, pouring smoke out. Quote Link to comment https://www.bigmacktrucks.com/topic/69647-2009-mack-gu813-excessive-black-smoke-plugged-dpf-in-3-days/page/2/#findComment-496797 Share on other sites More sharing options...
Wasteman1 Posted May 5, 2022 Author Share Posted May 5, 2022 but only when we put it in regen Quote Link to comment https://www.bigmacktrucks.com/topic/69647-2009-mack-gu813-excessive-black-smoke-plugged-dpf-in-3-days/page/2/#findComment-496798 Share on other sites More sharing options...
Wasteman1 Posted May 5, 2022 Author Share Posted May 5, 2022 where is the EGR test in PTT? we did the intake and exhaust check test and the EGR flow stays at 0. while we had that test going we hit regen and EGR flow still said 0. how or when should we see EGR flow? only while driving? Quote Link to comment https://www.bigmacktrucks.com/topic/69647-2009-mack-gu813-excessive-black-smoke-plugged-dpf-in-3-days/page/2/#findComment-496799 Share on other sites More sharing options...
Vmac3 Posted May 6, 2022 Share Posted May 6, 2022 Intake and exhaust section and I believe its under miscellaneous. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69647-2009-mack-gu813-excessive-black-smoke-plugged-dpf-in-3-days/page/2/#findComment-496859 Share on other sites More sharing options...
Mackpro Posted May 6, 2022 Share Posted May 6, 2022 The DRV valve set up is only used to help heat up the exhaust for a regen. They dropped this feature around 2011 when the figured out how to increase exhaust temp by manipulating the injector timing. No EGR flow during regen is the norm . 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69647-2009-mack-gu813-excessive-black-smoke-plugged-dpf-in-3-days/page/2/#findComment-496891 Share on other sites More sharing options...
fjh Posted May 7, 2022 Share Posted May 7, 2022 Has the truck had the updates as MACP has suggested Get all that stuff up to date before messing with this much more! to much going on in the background to not be up to date! The other thing is the the 7th injector sobering or spraying? Quote Link to comment https://www.bigmacktrucks.com/topic/69647-2009-mack-gu813-excessive-black-smoke-plugged-dpf-in-3-days/page/2/#findComment-496934 Share on other sites More sharing options...
fjh Posted May 7, 2022 Share Posted May 7, 2022 (edited) 4 minutes ago, fjh said: Just thought I would add this as we have struggled with this issue before ! Has the truck had the updates as MACP has suggested Get all that stuff up to date before messing with this much more! to much going on in the background to not be up to date! The other thing is the the 7th injector sobering or spraying? Also the sweep test on the turbo maybe throwing you off ! When the engine is hot the turbo could be sticking and not creating enough air during regen!! just saying! Edited May 7, 2022 by fjh Quote Link to comment https://www.bigmacktrucks.com/topic/69647-2009-mack-gu813-excessive-black-smoke-plugged-dpf-in-3-days/page/2/#findComment-496935 Share on other sites More sharing options...
Wasteman1 Posted September 28, 2022 Author Share Posted September 28, 2022 I thought I would type an update to this. The dealer replaced the Turbo and the EGR valve and cooler and that seemed to fix it. I believe it was the turbo because we checked the EGR valve and the cooler and they were fine. Just odd that it would only do it in regen. but its been running great since. knock on wood.!! Thanks everyone Quote Link to comment https://www.bigmacktrucks.com/topic/69647-2009-mack-gu813-excessive-black-smoke-plugged-dpf-in-3-days/page/2/#findComment-510537 Share on other sites More sharing options...
fjh Posted September 28, 2022 Share Posted September 28, 2022 4 hours ago, Wasteman1 said: I thought I would type an update to this. The dealer replaced the Turbo and the EGR valve and cooler and that seemed to fix it. I believe it was the turbo because we checked the EGR valve and the cooler and they were fine. Just odd that it would only do it in regen. but its been running great since. knock on wood.!! Thanks everyone Thanx for posting your fix! Sounds like they got into a parts throwing situation in unfortunately sometimes that is what has to happen! 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69647-2009-mack-gu813-excessive-black-smoke-plugged-dpf-in-3-days/page/2/#findComment-510542 Share on other sites More sharing options...
Onyx610 Posted September 29, 2022 Share Posted September 29, 2022 Pry could have been fixed with a turbo. Someone didn’t want to take the chance it may have been a cooler if it wasnt and basically have to do the job all over again. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69647-2009-mack-gu813-excessive-black-smoke-plugged-dpf-in-3-days/page/2/#findComment-510547 Share on other sites More sharing options...
fjh Posted September 29, 2022 Share Posted September 29, 2022 2 hours ago, Onyx610 said: Pry could have been fixed with a turbo. Someone didn’t want to take the chance it may have been a cooler if it wasnt and basically have to do the job all over again. Agreed! These turbos can choke up with carbon and stick sum times only when hot then won't stroke out enough to make heat! And then Just compound the problem with more carbon! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69647-2009-mack-gu813-excessive-black-smoke-plugged-dpf-in-3-days/page/2/#findComment-510556 Share on other sites More sharing options...
Onyx610 Posted September 29, 2022 Share Posted September 29, 2022 3 hours ago, fjh said: Thanx for posting your fix! Sounds like they got into a parts throwing situation in unfortunately sometimes that is what has to happen! You are 100 percent correct on the fact that throwing parts at it is what has to happen sometimes, I’m guilty of bringing the parts cannon out of the closet myself. Not as often as some people but it has a couple of times. Not a nice feeling but sometimes that’s what it comes down to on these red engines. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69647-2009-mack-gu813-excessive-black-smoke-plugged-dpf-in-3-days/page/2/#findComment-510557 Share on other sites More sharing options...
Joey Mack Posted September 29, 2022 Share Posted September 29, 2022 Yep... Quote Link to comment https://www.bigmacktrucks.com/topic/69647-2009-mack-gu813-excessive-black-smoke-plugged-dpf-in-3-days/page/2/#findComment-510558 Share on other sites More sharing options...
fjh Posted September 29, 2022 Share Posted September 29, 2022 11 hours ago, Onyx610 said: You are 100 percent correct on the fact that throwing parts at it is what has to happen sometimes, I’m guilty of bringing the parts cannon out of the closet myself. Not as often as some people but it has a couple of times. Not a nice feeling but sometimes that’s what it comes down to on these red engines. This here is entirely experience based Crap shoot! start with what you know and see and what you don't! if the egr valve opens on command and the cooler is not cloged and the differential pressure sensor and venturi tube are clear and show to be working on the screen ! then you might want to tri the turbo first! BUT ITS A pricey nuke! It all depends on which ammo you choose to load the canon with and in what order ! You tend to try to use the cheapest part first ! However Had he pulled on the turbo first and tried it it likely would have saved all these other parts ! BUT its the most costly so you hope for the best by starting cheap ! Its a total crap shoot Unfortunately! there is nothing in this trouble shooting chart on this other than experience ,good logic and your best guess and good intentions! Sad but true! 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69647-2009-mack-gu813-excessive-black-smoke-plugged-dpf-in-3-days/page/2/#findComment-510579 Share on other sites More sharing options...
Onyx610 Posted September 29, 2022 Share Posted September 29, 2022 Probably said I’m this close now, it’s getting a cooler. I’m not doing this job twice. Quote Link to comment https://www.bigmacktrucks.com/topic/69647-2009-mack-gu813-excessive-black-smoke-plugged-dpf-in-3-days/page/2/#findComment-510586 Share on other sites More sharing options...
Onyx610 Posted September 29, 2022 Share Posted September 29, 2022 Speaking of coolers. Just came across this today…truck sounded like a tea pot at low/mid range rpm. Go away at full throttle. Clearly within operation of the egr valve. It was the bottom gasket of the hot pipe. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69647-2009-mack-gu813-excessive-black-smoke-plugged-dpf-in-3-days/page/2/#findComment-510587 Share on other sites More sharing options...
Joey Mack Posted September 29, 2022 Share Posted September 29, 2022 is the flange bent, from too much tweaking? They can be a pain at times, as far as the getting them to seal.. I see the flat steel seal in the picture, has been leaking for a bit. Those little tabs are supposed to be your friend when going back together.. Which truck is it? Just curios, Jojo Quote Link to comment https://www.bigmacktrucks.com/topic/69647-2009-mack-gu813-excessive-black-smoke-plugged-dpf-in-3-days/page/2/#findComment-510589 Share on other sites More sharing options...
Onyx610 Posted September 29, 2022 Share Posted September 29, 2022 It’s getting a hot pipe as well now, it’s a 07 granite mp7…Volvos first test run. Quote Link to comment https://www.bigmacktrucks.com/topic/69647-2009-mack-gu813-excessive-black-smoke-plugged-dpf-in-3-days/page/2/#findComment-510591 Share on other sites More sharing options...
Joey Mack Posted September 29, 2022 Share Posted September 29, 2022 yeah, good call.. you got this..... 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69647-2009-mack-gu813-excessive-black-smoke-plugged-dpf-in-3-days/page/2/#findComment-510592 Share on other sites More sharing options...
fjh Posted September 29, 2022 Share Posted September 29, 2022 Yup for those unfamiliar! the best way to find those is to do a regen get the squeal going if the truck will allow you to and pour some hot water over the suspect area’s and listen for the sound to change! At least that’s how our guys tracked these down! 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69647-2009-mack-gu813-excessive-black-smoke-plugged-dpf-in-3-days/page/2/#findComment-510594 Share on other sites More sharing options...
Joey Mack Posted September 29, 2022 Share Posted September 29, 2022 yes sir... windex dries to quickly.. a good douching works quickly.. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69647-2009-mack-gu813-excessive-black-smoke-plugged-dpf-in-3-days/page/2/#findComment-510595 Share on other sites More sharing options...
Onyx610 Posted September 29, 2022 Share Posted September 29, 2022 (edited) Just used soapy water once the truck was cold. With an exhaust leak that bad should be able to find quickly even at idle. Correct me if im wrong, but I believe you wont find any leaks after the egr valve during regen as the valve should be closed? However I do like that hot water trick! Edited September 29, 2022 by Onyx610 Quote Link to comment https://www.bigmacktrucks.com/topic/69647-2009-mack-gu813-excessive-black-smoke-plugged-dpf-in-3-days/page/2/#findComment-510597 Share on other sites More sharing options...
Joey Mack Posted September 29, 2022 Share Posted September 29, 2022 kinda surprised there werent any sooty streaks, since 1/4 of the seal was missing.. anyway, just chatting,, been sittin here for almost 3 weeks.... jojo 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69647-2009-mack-gu813-excessive-black-smoke-plugged-dpf-in-3-days/page/2/#findComment-510598 Share on other sites More sharing options...
Onyx610 Posted September 29, 2022 Share Posted September 29, 2022 It was leaking all around but when I took it off, the bottom of the gasket was gone so you couldn’t see it. That half must have burned up to nothing because it was no where to be found. And yes I looked in the cooler to make sure it wasn’t in there haha. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69647-2009-mack-gu813-excessive-black-smoke-plugged-dpf-in-3-days/page/2/#findComment-510600 Share on other sites More sharing options...
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