Hi, I have seen this discussed in this and other sites forums but no answers that I could find that addressed the issue. As far as I can tell a lot of guys are having this issue and dealers are not much help on it.
I have had 4 duramax diesel trucks starting in 2001 when the first ones came out. The one I have now is the only one that puts out this strong diesel exhaust fume smell that fills the cab when idling and backing up. I have resorted to putting on recirc each and everytime I start it and when coming to a stop at a light etc. It did it right from new but it does seem worse now that its got about 60 k miles on it. I have since put on 4" exhaust, intake and MBRP down pipe, cat is gone and EGR is blocked. There are no exhaust leaks ! It stinks even after turning it off as you walk away from it the smell lingers. It is simply making this "extra" heavy exhaust and being it is so strong it finds its way into the cab and you really notice it. Its not ventilation system as you can smell it outside too. If I let it warm up outside the smell even gets into the garage with the door closed. It seems to come and go somewhat and I noticed this on another site where a guy said it seems to come up every few days or so. The dealer kept it for 10 days once and fooled around with EGR and did not make any difference, then a few months later I got a code so they replaced EGR at my expense and that did nothing to fix problem.
I think it may be some injector issue ? Is it possible one or two injectors are doing something weird and if so is there a replacement or upgrade to improve the injector performance perhaps ? Anyone have any ideas I'm desperate to get to the bottom of this. Truck is an 07 Classic LBZ. :help:
I have had 4 duramax diesel trucks starting in 2001 when the first ones came out. The one I have now is the only one that puts out this strong diesel exhaust fume smell that fills the cab when idling and backing up. I have resorted to putting on recirc each and everytime I start it and when coming to a stop at a light etc. It did it right from new but it does seem worse now that its got about 60 k miles on it. I have since put on 4" exhaust, intake and MBRP down pipe, cat is gone and EGR is blocked. There are no exhaust leaks ! It stinks even after turning it off as you walk away from it the smell lingers. It is simply making this "extra" heavy exhaust and being it is so strong it finds its way into the cab and you really notice it. Its not ventilation system as you can smell it outside too. If I let it warm up outside the smell even gets into the garage with the door closed. It seems to come and go somewhat and I noticed this on another site where a guy said it seems to come up every few days or so. The dealer kept it for 10 days once and fooled around with EGR and did not make any difference, then a few months later I got a code so they replaced EGR at my expense and that did nothing to fix problem.
I think it may be some injector issue ? Is it possible one or two injectors are doing something weird and if so is there a replacement or upgrade to improve the injector performance perhaps ? Anyone have any ideas I'm desperate to get to the bottom of this. Truck is an 07 Classic LBZ. :help:
