I have many questions about cracked injector tips. I am beginning to believe my DPF problems are coming from that, since I have replaced almost every element of the DPF system.
I go into passive regen every 70-80 miles like clockwork. Then it goes to manual regen needed, then to urgent, then disspears and runs great for 70 more. It doesnt matter if I pull over for a parked regen, or just drive through it, same results, same cycle.
Been to TEC in vegas, la mirada, eugene oregon, and portland. Been to Transport Equip in Missoula, Tri-State in Tupelo MS. Ive had it in 4 independant shops,also.
Ive cleaned the filter twice, replaced dpf seals 3 times. 2 new clamps. cleaned 7th injector, then replaced 7th injector. Replaced flex pipe. Replaced all temp sensors on dpf. replaced diff pressure sensor. Replaced one sensor on aftertreatment fuel pressure valve, then told I should have done the whole thing, so thats new too. EGR diff pressure sensor removed and cleaned.
Over 10,000$ in two months.Ironically, only about 3000$ in parts, labor is whats killing me. Almost every shop ive been into has thrown a new part on it, ran 3 or 4 service regens until they get the numbers looking good, and taken my money. 80 miles down the road Im back in regen.
Smoke is getting worse, its whitish blue. Not a true indicator of excessive fuel, but the way the truck acts is like that filter is getting Soaked, to the point of plugged while regening, until I get to that 3rd stage,.. The URGENT stage, then all that smoke gets forced thru and im clean again. And, Ive also dropped from a steady 7-7.5 mpg to under 6mpg in the last 3 or 4 weeks. Since Transport in Missoula ran 4 back to back regens and had my truck boiling in the sun. At that point they replaced the aftertreatment fuel pressure sensor. I replaced the entire valve a couple days later.
After 2 regens, with PTT on it, im showing under 10% soot rate. But when i first hook to it, it usually reads 144%. Unfortunately, Im getting better at reading PTT than alot of the Techs ive had work on it. They seem to like to just push that button (service regen)and walk away. None have ever actually stayed there and "monitored" anything.
Any symptoms sound familiar? Any help would be greatly appreciated,... Im about to default my loan and lose this truck. I cant run like this, and these shops have exhausted all of my reserves with "uneduacated guesses".
Wow, sorry. Maybe I should have started my own thread!
I too have the exact same problem on two different trucks. Both 2015 volvo 670's with d13's. Same symptoms and constant derate and parked regens. I have replaced every component, sensor, etc that makes up the def system. Cleaned the filter several times, etc. Please let me know if you find a solution.
MP8 injector cups
in Modern Mack Truck General Discussion
Posted
I too have the exact same problem on two different trucks. Both 2015 volvo 670's with d13's. Same symptoms and constant derate and parked regens. I have replaced every component, sensor, etc that makes up the def system. Cleaned the filter several times, etc. Please let me know if you find a solution.