PLEASE HELP!

rhitrucking · Nov 1, 2019

Johny41 said: ↑

Oh man,Sorry to hear!
Why did Volvo name it D13? there's no 13th floor in North America ,here in Ontario the gov skips #13 in roads highways markings. Add some holy water additive.
Did you notice a fix in your regen issue with new injectors?
Make sure they upload the new injectors trim codes. I had all kind of troubles last year with emission faults, low power and bad fuel economy for a couple of months after i changed motor. My reman came with injectors instaled , no new ecm , but the technicians just swapped the old ecm without uploading new injectors trim codes , even the Volvo shop foreman said wont make a difference , they dont bother with trim codes after replacing injectors. But actually did huge difference, it start pulling better and fuel economy jumped from 6,5-7 to 8-9 mpg.
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My soot level was going from approx 10% to 100% in 200 miles. after injectors, my soot level was at approx. 80% after 700 miles but I had to bring the truck in because of air in fuel line. So it seems that injectors have helped slow the rate of soot, however, I never once saw the soot level decrease during those 700 miles.

rhitrucking · Nov 16, 2019

well, lost prime again today, bubbles in the fuel tank. This will be the third set of injectors in 3 weeks. My luck is unbelievable!

nasriza · Nov 16, 2019

rhitrucking said: ↑

well, lost prime again today, bubbles in the fuel tank. This will be the third set of injectors in 3 weeks. My luck is unbelievable!
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i don’t know if it’s your luck is the same guy doing this if yes he has to be doing something wrong there is no way. Either you are the unluckiest person in the world I’ve been dealing with this #### a while now and I’ve never seen something like this.

rhitrucking · Nov 16, 2019

2 different mechanics have done them so far. 1 nightshift and 1 day shift. This has been a trying year, let me tell ya. I was hoping this would take care of my issues, but all it has done was start a new problem.

nasriza · Nov 16, 2019

Tell them to right them a little bi rover spec like about an extra 20 degrees on final torque.

66fordman · Nov 16, 2019

rhitrucking said: ↑

I had an EGR cooler replaced due to it leaking. Thats where all this trouble began. Ever since then, It wont passive regen and after a forced regen, the soot level goes to about 80% within 100 miles. So here is what we have accomplished, we had the DPF/DOC filter cleaned and replaced, cleaned the egr valve and also replaced the EGR pressure sensor. Verified correct flow on 7th injector as well. Now after all this, same results. 100 miles and soot level at approx. 80%. No check engine lights, truck runs excellent with good power. My forced regen temps are at 921 degrees, with in spec! So we check the DPF pressure sensor. took tubes off and verified all clear, cleaned them to look like new! Here are what my my pressure sensor results are: .27 at 2100 rpm and .12 at idle, this agrees with 80% soot level, however, we know it doesnt have 80% soot. we hook up a manual back pressure guage and run at high RPM, this agrees with DPF pressure sensor at 1.3psi. Everything is pointing to a backpressure issue, but we know the DPF/DOC is good. What on earth could be causing this increase in backpressure? Could a clogged SCR filter do this? Is there a way to check the SCR filter? Volvo with there eservice recommends new injectors. I dont see how new injectors are causing a back pressure issue. ANY and ALL insight would be greatly appreciated. Everything on a forced regen is within spec. Please help!
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Thank God I've been driving 30 years if I live five more years I'll be out of this business trucks are too smart for drivers and mechanics

66fordman · Nov 16, 2019

Stop worrying about these new trucks and start rebuilding old ones that would solve everything

Johny41 · Dec 6, 2019

This technician is talking about injectors torque sequence and explains it quite clear for Mack mp7, i believe it has same injectors and issues. I watched Volvo techs replacing my injectors a couple of times, but never followed this steps.

rhitrucking · Dec 6, 2019

Johny41 said: ↑

This technician is talking about injectors torque sequence and explains it quite clear for Mack mp7, i believe it has same injectors and issues. I watched Volvo techs replacing my injectors a couple of times, but never followed this steps.

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I would be surprised if many techs do!

nasriza · Dec 6, 2019

Almost no one does there is about a 16 to 20 page instruction by Volvo on how to change cups and injectors I don’t follow the last step I put my own angle on it that I have not had many issues with.

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