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Tom
Tom, ASE Certified Technician
Category: Car
Satisfied Customers: 25951
Experience:  ASE Certified Master Technician
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2001 isuzu: DIESEL.HOW DO I SET INJECTION TIMING ON INJECTION POMP?

Customer Question

Hi I AM WORKING ON 2001 ISUZU NPR 4 CIL. DIESEL.HOW DO I SET INJECTION TIMING ON INJECTION POMP? MY NAME ISXXXXX#XXXXXXX
Submitted: 5 years ago.
Category: Car
Expert:  Tom replied 5 years ago.
It should be the same as the VW . Let me know if this link helps
ClickHere
Customer: replied 5 years ago.
Hi I JUST RED ALL PARAGRAF YOU SENT ME BUT I THINK IT IS DIFEERENT ON ISUZU NPR.ACCORDING TO ISUZU MANUAL I HAVE TO SET 1 CIL IN TOP DEAD POSITION AND GO BACK13%.AT THIS TIME SHOUD ROCKER ARMS BE LOOSE OR TIGHT ON 1 CIL?
Expert:  Tom replied 5 years ago.
They should be loose .
Customer: replied 5 years ago.

Got it thanks.manual sad i have to set crankshaft 13% before top dead cil.what does it do?

Expert:  Tom replied 5 years ago.
Allows the injector pump to line up correctly when it installed for proper timing .
Customer: replied 5 years ago.
Ok I installed injection pomp making sure timing mark on bigger line13% and than i moved flyweel to 8% according to isuzu manual. I stiil cant start the truck.also when i pomp manual pomp no fuil coming to injectors.I THINK manual pomp shoud deliver fuil even if injection pomp out of timing?
Expert:  Tom replied 5 years ago.
Yes correct . It sounds like timing is fine you just have a different issue .
Customer: replied 5 years ago.
When I pomp manual pomp Ishoud see diesel fuil coming from injector line going to injector? nothing coming out. I CONNECTED electical pomp directly to fuil line but I only see disel coming from return line.what could be the problem?
Expert:  Tom replied 5 years ago.
Sounds like a faulty pump.