Medium and Heavy Trucks

Have truck repair questions? Ask an Expert

Ask an Expert,
Get an Answer ASAP!

I recently bought an Isuzu Elf truck PB-NKR81N from JAPAN…

Customer Question
I recently bought an...

I recently bought an Isuzu Elf truck PB-NKR81N from JAPAN NBC Corporation .
4790cc manual 170000 k.m.
chassis # NKR81-7049948 3 drive type :*****
Received truck late January 2018 and was working fine ,changed the engine oil and filter.Then 9 days ago the DPD light started blinking constantly,i followed the procedure depressing the DPD button on dash leaving for 30 mins.
I also removed the ceramic filter and manually cleaned with boiling water and blue def liquid bought from NAPA.
after cleaning filter and driving,i noticed lots of blue greyesh smoke from back of exhaust.Light stays on....and am afraid truck will enter limp mode??

Mechanic's Assistant: Sometimes things that you think will be really complicated end up being easy to fix. The Heavy Truck Mechanic I'm going to connect you with knows all the tricks and shortcuts.

I recently bought an Isuzu Elf truck PB-NKR81N from JAPAN NBC Corporation .
4790cc manual 170000 k.m.
chassis # NKR81-7049948 3 drive type :*****
Received truck late January 2018 and was working fine ,changed the engine oil and filter.Then 9 days ago the DPD light started blinking constantly,i followed the procedure depressing the DPD button on dash leaving for 30 mins.
I also removed the ceramic filter and manually cleaned with boiling water and blue def liquid bought from NAPA.
after cleaning filter and driving,i noticed lots of blue greyesh smoke from back of exhaust.Light stays on....and am afraid truck will enter limp mode??

Mechanic's Assistant: Anything else you want the truck mechanic to know before I connect you?

I recently bought an Isuzu Elf truck PB-NKR81N from JAPAN NBC Corporation .
4790cc manual 170000 k.m.
chassis # NKR81-7049948 3 drive type :*****
Received truck late January 2018 and was working fine ,changed the engine oil and filter.Then 9 days ago the DPD light started blinking constantly,i followed the procedure depressing the DPD button on dash leaving for 30 mins.
I also removed the ceramic filter and manually cleaned with boiling water and blue def liquid bought from NAPA.
after cleaning filter and driving,i noticed lots of blue greyesh smoke from back of exhaust.Light stays on....and am afraid truck will enter limp mode??

Submitted: 5 months ago.Category: Medium and Heavy Trucks
Show More
Show Less
Ask Your Own Medium and Heavy Trucks Question
Answered in 1 hour by:
3/15/2018
Technician: Jeremy, Certified Truck/Bus Technician replied 5 months ago
Jeremy
Jeremy, Certified Truck/Bus Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 3,859
Experience: ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, EPA 608/609 HVAC Certified, Steering/Suspension and ABS/Brakes Technician
Verified

My name is ***** ***** I will assist you with your question today.

I'm an independent contractor and I don't get paid until a rating has been made.

We can go back and forth as needed to help resolve the issue you are having. Follow-ups are free after ratings, so rate with confidence!

Thst is NOT how the DPF filter gets cleaned. They are sprayed with a chemical and baked.

The flashing light means the vehicle needs to have a parked regen done. Follow the steps in the manual to do the parked regen procedure.

With that blue to gray smoke, hopefully that filter wasn't damaged from the water getting sprayed into it. The water gets really hot in that filter and cracks the ceramic which causes the need for a filter replacement (at about 4 thousand USD). NEVER put DEF in that filter again. That is really really bad for that filter. The DEF is acidic from the Urea and will ruin the filter. Hopefully that didn't happen with the filter already.

With this truck being new, I would have warranty look at the injectors on it and do a forced regen on the truck. I wouldn't suggest what you did for they will toss the warranty the moment you mentioned water and DEF sprayed on the filter.

Try a parked regen first and see if that will burn everything out.

_______________________________________________________________________________

You want a 5-star service and I want to provide a 10 star service. Please consider that I don't know your skill level as well as I can't see, touch, smell, hear the vehicle/machine in question. Please provide as much detail as possible and I will provide as much I can back to you.

Once an answer is provided, you should see a rating screen. Please rate my personal service to you. The ratings are my personal feedback, they are not the site feedback.

Please note: The site does the phone call requests, not I. I do not generate the request. Same as the memberships. The only thing I ask for is a positive 5-star rating, when we are finished, for my personal service to you.

Thank you for allowing me to assist you through Just Answer!

Jeremy

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 5 months ago
Hi Jeremy
I tried the parked regen for 30 mins in park but light still blinking??
Truck is 2006 so granite not effective
Please help
Customer reply replied 5 months ago
Guarantie not effective truck is 2006
Technician: Jeremy, Certified Truck/Bus Technician replied 5 months ago

I thought the truck was a 2018? That was the info I got.

Did you let the regen finish? The engine will idle down when the regen is complete.

If you did let it finish and the light is still blinking, then the truck needs a computer connected to it with a program called IDSS or Tech2Tool (GM program) and have the regen forced with monitoring to see why the regen is not completing. It could be something like a sensor not reading correctly to a DPF filter needing to be chemically baked or a bad turbo not pushing air into the filter to get a good bake. The system needs to be monitored at this point. With the blue/gray smoke, it could be an injector being bad and sending too much fuel into the exhaust system and causing the heat to be too low where the regen will not have a good burn out.

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 5 months ago
I ran the dpd for 40 mins and it came off.
But engine light came on
Imm driving and truck not exceeding 60 km p/he
Struggling power and acceleration
Please advise!
Customer reply replied 5 months ago
Regen completed and light came off after depressing dpd for 45 mins
But now engine light came on and truck is struggling to accelerate
With max of 60 km per hr
Almost no power after dpd complete
Please help
Technician: Jeremy, Certified Truck/Bus Technician replied 5 months ago

You have to connect IDSS or Gm's Tech 2 Tool to it, pull the code for the check engine light, and run the regen with the tool connected to see what is going on. There is no other way to diagnose this issue. There is something going on with the regen system causing the issue.

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 5 months ago
Truck is Isuzu from Japan and 24 volts
Customer reply replied 5 months ago
I have experienced Canadian mechanic but he can't figure out?
Customer reply replied 5 months ago
Willing to pay to solve problem
Technician: Jeremy, Certified Truck/Bus Technician replied 5 months ago

Now it is starting to feel like I am beating a dead horse for I stated twice now that IDSS needs to be connected, codes pulled, and regen ran while monitoring to see what the regen is doing to be causing the failure. Well, 3 times now.

I will opt out for you are wanting a magic ball answer that can't be given. The issue has to be diagnosed and you don't seem to want the correct answer that is given by connecting the program to the truck.

Good luck on this and I do hope you get it repaired.

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 5 months ago
Regen has been ran and completed
DPD light stopped blinking
Technician: Jeremy, Certified Truck/Bus Technician replied 5 months ago

Then the issue may have resolved. If it happens again, I still suggest connecting IDSS to the truck to see what is going on for one of the sensors is not reading right and causing the regen to run properly.

Ask Your Own Medium and Heavy Trucks Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a technicianLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Jeremy Your Own Question
Jeremy
Jeremy
Jeremy, Certified Truck/Bus Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 3,859
3,859 Satisfied Customers
Experience: ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, EPA 608/609 HVAC Certified, Steering/Suspension and ABS/Brakes Technician

Jeremy is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Daniel Wilson

Daniel Wilson

2,803 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

4,530 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

2,892 satisfied customers

worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling

Jeremy

Jeremy

Certified Truck/Bus Technician

3,859 satisfied customers

ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, EPA 608/609 HVAC Certified, Steering/Suspension and ABS/Brakes Technician

cumminsdr

cumminsdr

Mechanic

1,351 satisfied customers

All types of Cummins applications

Curtis B.

Curtis B.

Technician

991 satisfied customers

Technician turned service manager on multiple lines of trucks and engines, used in industry.

dieseldan55

dieseldan55

Contractor

74 satisfied customers

Road Service mechanic for Volvo Construction.

< Previous | Next >

Related Medium and Heavy Trucks Questions
Dd15 one box EEC 61 spn3364 fmi17 EEC 61 spn3364 fail 17
Dd15 one box EEC 61 spn3364 fmi17 EEC 61 spn3364 fail 17 EEC61 son 4337 fail 04. Def quality poor def warning def temp low cutting power then cutting down to to 5 mph I stopped buying bulk def and for… read more
roy
roy
Associate Degree
3 satisfied customers
I have the following fault codes for a 2011 Freightliner
I have the following fault codes for a 2011 Freightliner Cascadia: EEC 61, spn 3364, fail 2 EEC 61, spn 3216, fail 4 EEC 61, spn 3364, fail 17 EnG 1, spn 100, fail 1 EnG 1, spn 3216, fail 2 EnG 1, spn… read more
roy
roy
Associate Degree
3 satisfied customers
I recently bought an Isuzu Elf truck PB-NKR81N from JAPAN
Second opinion] I recently bought an Isuzu Elf truck PB-NKR81N from JAPAN NBC Corporation . 4790cc manual 170000 k.m. chassis # NKR81-7049948 3 drive type :***** Received truck late January 2018 and w… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,803 satisfied customers
Eng 2 001 spn000157 inj metr press 16 code? Freightliner
Eng 2 001 spn000157 inj metr press 16 code? JA: What is the complete model and serial number of your machine? Customer: Freightliner cascadia dd13 JA: Are you fixing this yourself? What have you tried… read more
roy
roy
Associate Degree
3 satisfied customers
2006 Peterbilt 387 with a cat C15 dual turbo. first off im
2006 Peterbilt 387 with a cat C15 dual turbo. first off im new to these big engines. one of the blue hoses with a valve(the top one theres 2) on the passenger side towards the front of the motor was o… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,803 satisfied customers
Ed Humphrey,ne has developed a blow by,what causes this and
Customer: Ed Humphrey,ne has developed a blow by,what causes this and can it be fixed without reuilding the engine? … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,530 satisfied customers
I have a volvo truck with a cummings n14 pluse engine in
i have a volvo truck with a cummings n14 pluse engine in it.i have diesel in the reservior.what causes this.… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,351 satisfied customers
I have a2015 389 I broke the adjustment bolt on my fifth
I have a2015 389 I broke the adjustment bolt on my fifth wheel,I've driven it around 3-400 miles will the jaws open,how do I replace it… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
3,859 satisfied customers
I have a 2007 Freightliner century with a C15 eng. last
I have a 2007 Freightliner century with a C15 eng. last night the check engine light came on check for low oil and water. Found the antifreeze to be below the low water sensor and the engine blowing w… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,892 satisfied customers
When running after a couple hundred miles my isx started
When running after a couple hundred miles my isx started throwing get white smoke thru the exhaust as of its regenerating but it doesn't stop unless I stop and force gen, and recently I got the egr de… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,803 satisfied customers
2008 detroit 60series regen. 06R0983259. I need the engine
2008 detroit 60series regen. 06R0983259. I need the engine torque specifications. cylinder head, main bearings, rod bearings, etc.… read more
Curtis B.
Curtis B.
Technician
Associate Degree
991 satisfied customers
1999 international 4700 T444E, VIN XH 213550 need some
1999 international 4700 T444E, VIN XH 213550 need some advice for removal of 2 leaky transmission lines.… read more
Andy3221
Andy3221
truck /coach technician
Vocational, Technical or Trade Scho
222 satisfied customers
I have a 2001 Freightliner Classic XL with 60 series detroit
I have a 2001 Freightliner Classic XL with 60 series detroit 14 liter. It has fuel in fuel filters but won't crank unless I shoot started fluid to it. Then if I don't keep rpms up to at least 10 it wi… read more
roy
roy
Associate Degree
3 satisfied customers
G'day... 1998 GMC 6500 with a 3116 - cranks, unit will not
G'day... 1998 GMC 6500 with a 3116 - cranks, unit will not start - ongoing problem for some time. I know it will not start when the check engine and intake heater light do not come on. This is intermi… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,892 satisfied customers
I have a 2013 Freightliner Cascadia with the DD15. Just
I have a 2013 Freightliner Cascadia with the DD15. Just recently it has started to stall while going down the road and then will immediately run again. It looses power to all of the lights and engine.… read more
roy
roy
Associate Degree
3 satisfied customers
I have A 2006 Kenworth with a C15 Cat engine. I am loosing a
I have A 2006 Kenworth with a C15 Cat engine. I am loosing a lot of coolant appx three gallons on a 8 hour day it seems to slowly get worse. The coolant is coming out of the hose by the rad cap I have… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,892 satisfied customers
I Have a 2008 International 4300 Maxxforce it was useing
I Have a 2008 International 4300 Maxxforce it was useing colliant but couldnt see a leak, but could hear a small hissing on passanger front, after shut off (could be air from air brakes) but yestarday… read more
Andy3221
Andy3221
truck /coach technician
Vocational, Technical or Trade Scho
222 satisfied customers
in my ms3 midliner, when the oil pressure drops below 30, I
in my ms3 midliner, when the oil pressure drops below 30, I hear a tapping sound. Probably a rod bearing. I bought the truck used, 1997 Mack, 178,000 miles. This started when i changed the oil and add… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,892 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x