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Related Medium and Heavy Trucks Questions
2007 isuzu npr diesel has diesel fuel flowing into engine
2007 isuzu npr diesel has diesel fuel flowing into engine oil. Comes spraying out of oil overflow hose obto ground. … read more
Steven
Steven
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Associates
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My 2001 isuzu NPR is start good when i acceleration after
my 2001 isuzu NPR is start good when i acceleration after two second loss power and make a lot smoke? … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,892 satisfied customers
2005 isuzu NPR diesel drops to limp mode. All fluids are ok,
2005 isuzu NPR diesel drops to limp mode. All fluids are ok, and harness connectors intact. OBD2 reader will not read isuzu codes … read more
Andy3221
Andy3221
truck /coach technician
Vocational, Technical or Trade Scho
222 satisfied customers
We have a 2011 Isuazu NPR, 3.0 Diesel Engine. P2000 and
We have a 2011 Isuazu NPR, 3.0 Diesel Engine. P2000 and P20C9 codes. Have replaced Both Nox sensors and DEF Control Module. Had codes that were specific for these components and the dealer said that m… read more
Alex Olsen
Alex Olsen
auto/diesel/industrial
490 satisfied customers
2011 Isuzu NPR Diesel Engine. Started running rough on the
2011 Isuzu NPR Diesel Engine. Started running rough on the high way, both check engine lights on. Code is P244B--particulate filter differential pressure too high bank 1, possible cause?… read more
Pete
Pete
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Vocational, Technical or Trade Scho
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I'm from Sydney Australia and i got isuzu npr 400 i was just
Hi my name is***** from Sydney Australia and i got isuzu npr 400 i was just wondering if could get bigger turbo for engine 4he1-xs provide me more information thanks… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,243 satisfied customers
Had a new long block put in my 2007 Isuzu NPR 5.2 diesel
Had a new long block put in my 2007 Isuzu NPR 5.2 diesel after the old motor blew a rod through the oil pan now the new engine is in but has low oil pressure and the low oil kill switch is shutting it… read more
Wayne
Wayne
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Vocational, Technical or Trade Scho
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I have an 2005 Isuzu npr hd truck and only shift second
I have an 2005 Isuzu npr hd truck and only shift second gear … read more
Alex Olsen
Alex Olsen
auto/diesel/industrial
490 satisfied customers
Travel to Caribbean to Fix NPR Fuel Issue - Starts Won't Rev
Travel to Caribbean to Fix NPR Fuel Issue - Starts Won't Rev I'm looking for a certified Master Isuzu NPR technician to travel to St. Croix US Virgin Islands to solve a fuel issue. Vehicle is a 2010 I… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,243 satisfied customers
Isuzu NPR: I have a 2000 Isuzu npr .I had to drain the fuel
I have a 2000 Isuzu npr .I had to drain the fuel tank and blow out the fuel lines due to contamination .I put everthing back together but can't get the lines purged from the pump to the injectors.Can … read more
Curtis B.
Curtis B.
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Any tricks for installing injector switch on 2003 isuzu npr?
Any tricks for installing injector switch on 2003 isuzu npr? It is the single wire solenoid with a plunger that operates a spring loaded mechanism at the rear or behind the rear of the injection pump.… read more
Curtis B.
Curtis B.
Technician
Associate Degree
991 satisfied customers
Hi just bought a 99 isuzu npr diesel I think the owners before
Hi just bought a 99 isuzu npr diesel I think the owners before me hardly used it so I thought you should know that but 2 days later after I bought I ran the fuel tank down below a quarter tank. The en… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
19 satisfied customers
2001 Isuzu NPR V.I.N. 17006703 Engine 4HE1-XS Diesel 6 Cyl
2001 Isuzu NPR V.I.N. 17006703 Engine 4HE1-XS Diesel 6 Cyl 4.75 Liter 313,884 Miles Throttle pedal stiff, truck fuel pedal stcks and causes truck to accelerate out of control. Truck has to be put into… read more
Dieselman36
Dieselman36
High School or GED
1999 w4500 gmc- isuzu truck cranks up runs 30 seconds then
1999 w4500 gmc- isuzu truck cranks up runs 30 seconds then goes to rough runing and looses power at the timing solenoid , changed fuel injection pump, changed engine computer, flywheel sensor,still no… read more
Al-Moderator
Al-Moderator
High School or GED
Hi you helped me with torque specs for 4he1 2003 isuzu npr.
Hi you helped me with torque specs for 4he1 2003 isuzu npr. I wondering if you can probably help me with timing marks for the fuel pump and head replacment. Im taking them from my original block which… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,892 satisfied customers
whats the difference between 4HE1 and 4HK1 block on isuzu
whats the difference between 4HE1 and 4HK1 block on isuzu npr 2004 model i need new block my engine model number is XXXXX need to buy a new one wondering if 4hk1 will work with my model as well thanks… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,243 satisfied customers
I have a 2003 Isuzu NPR. Engine (4HE1). The engine will start
I have a 2003 Isuzu NPR. Engine (4HE1). The engine will start and idle fine, when the the engine is put under a load it will start to put out a large amount of black smoke. (I believe unburned fuel). … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
7,022 satisfied customers
We have a 2003 Isuzu NPR with the 4 cylinder turbo diesel engine.
We have a 2003 Isuzu NPR with the 4 cylinder turbo diesel engine. The truck has a little less than 100,000 miles on it. The truck is not driven often, and frequently has relatively long periods of bei… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,892 satisfied customers
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Meet the Experts:

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Daniel Wilson

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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.

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