Isuzu npr 3.9L 4bd2 turbo diesel 4 cylinder 1995-1997 injection pump removal

[@pwrouzaud]

I was looking for something else on my truck but landed here. Just want to say thanks for sharing, this info might come in handy some day.

[@magnificentshine1]

Absolutely! Thanks for watching!

[@ridindirtyface]

Dude, thanks a lot. Building one of these engines now, I got a little hung up on how to pull the injection pump....

[@chevelle29175]

Awesome video man thank you. I couldn’t find anything online. I guess we all have to do trial and error lol.

[@magnificentshine1]

Thank you!

[@f.g.6370]

You have to open timing cover to put back for the right timing A B C letter mark

[@wildermorey4927]

I love the video it was a huge help, I dont suppose you could show how in the hell the brackets are set up that hold the fan shroud, putting together an NPR I didnt take apart

[@magnificentshine1]

Ya I can. If I remember one bracket comes off the power steering pump then there is one up top and one off to the side on the bottom

[@wildermorey4927]

@@magnificentshine1 YES the power steering pump bracket, for the life of me I just cannot see how it mount up to it, pulling what little hair I have left our trying to figure it out, thank you for your quick response

[@wildermorey4927]

You know I just stuck with it like a good mechanic should and I figured it out, your video was instrumental

[@davidtrejo4555]

Have a quick question just installed everything back on my truck same truck as the one you showed me how do you prime the system on the diesel fuel pump

[@magnificentshine1]

I do it 2 ways I apply air to the fuel tank while covering the vent on the tank and loosen the lines at the filter. One fuel is there I pump the primer to its stiff. Loosen the fuel injector lines at the injectors crank till fuel comes then tighten each one. Should fire right up

[@davidtrejo4555]

Hey man so i have same truck n motor minw is 1992 I put everything back together on the pump got it to start. Now it miss fires hard knocking sound repair the fuel nozzles now it doesn't stay on

[@magnificentshine1]

@@davidtrejo4555 make sure your timing is absolutely correct and that you're not 180deg out

[@davidtrejo4555]

@@magnificentshine1 I got the timing lined up I'm thinking it's a vacuum line

[@magnificentshine1]

@@davidtrejo4555 it could be. I'm betting it something very simple. These motors are really simple

[@kucho1230]

Question, husband just installed a turbo charger on his 1996 NPR and it won’t start. We are trying to locate the fuel shut off to crank the engine but can’t seem to find it. Please help

[@magnificentshine1]

The fuel shut off lever is located on top of the injector pump. Probably had a cable from the lever to a nylon wrapped(like a sock or pouch) with am electric motor inside that actuates when the key is on or off to open or close the valve on the injection pump

[@kucho1230]

@@magnificentshine1 found the injector pump but we don’t see the shut off lever. Can you please dumb it down. Thank you again for your help

[@kucho1230]

Never mind! Found it! Thank you so much! We are subscribing

[@magnificentshine1]

No problem you can see it at the 5:10sec mark on the video

[@williammckenney3590]

That’s fine as long as you don’t turn the crankshaft, you need to be at tdc of the compression stroke.

[@williammckenney3590]

There is also a screen in the inlet of mechanical pump it is very common for it to get clogged with gunk.

[@yohannesabebe3088]

Thanks for your video & if you have 4hf1 model injection timing please?

[@garrykennedy5484]

11 degrees BTC = Before Top Dead Center.

[@archiehenry4929]

Would you be able to do a video on how to re install this injection pump ?

[@magnificentshine1]

Ya absolutely. I need to redo the pump gasket on mine here very soon and I'll make a detailed vid

[@archiehenry4929]

@@magnificentshine1 thanks! I’ll keep checking back

[@heliosfarming98]

What is the injection pump timing specification for the 4BD2t? Can't seem to find it. 6 degrees BTDC?

[@magnificentshine1]

My isuzu is 11deg BTDC

[@heliosfarming98]

@@magnificentshine1 We found it for the 1992 4BD2T. It's 8 deg BTDC. We worked through the timing procedure, and it showed the injector pump sending fuel to #1 at about 80 deg BTDC, so it's time for a rebuild on the injector pump. Also the #4 injector line isn't reaching enough pressure to fire the injector. It still runs surprizingly. Just lots of white smoke at startup and lower power than we should be getting.

[@archiehenry4929]

Any idea where I can find a fuel pump for my 97 3.9l, can’t find any nowhere, can I put a universal fuel pump in? Or does it need to be factory?

[@magnificentshine1]

Put an electric fuel pump on it from a super duty Ford you can buy it right at autozone. Quick and easy

[@archiehenry4929]

@@magnificentshine1 thanks for you response! So you’re saying I can install an electric fuel pump from super duty in replace of the injection pump correct?

[@magnificentshine1]

@@archiehenry4929 not replace the injection pump but replace the lift pump

[@Steve13211]

sup man, any videos on how to replace de headgasket on this 3.9?

[@magnificentshine1]

I'm sorry I don't, but it looks very straight forward and looks very simple🤷‍♂️

[@davidtrejo4555]

I have a question on putting back the fuel lines

[@davidtrejo4555]

There is one screw that has a screen inside of it and I can't remember where it goes there's only one of it in all the system

[@magnificentshine1]

@@davidtrejo4555 it goes into the banjo bolt on the fuel tank side of the lift pump.

[@davidtrejo4555]

@@magnificentshine1 okay so it's a line that goes back to the tank?

[@davidtrejo4555]

@@magnificentshine1 or is it the one that goes to the fuel filter

[@magnificentshine1]

@@davidtrejo4555 is the fuel line that goes from the fuel tank to the lift pump. The filter screen screws inside the banjo bolt that connects that line to the lift pump

[@yjqyql]

Hi what's your fuel filter number? trying to find a correct fuel filter for this engine but no luck..

[@skypruitt3870]

Did you by chance find a way to turn the pump up?

[@magnificentshine1]

Yes there is a screw and a cam on the side you can turn up. Do it slowly to see what works good just watch the egt

[@ParabolicDestination]

BTDC = Before Top Dead Center

[@BoostedRomos]

I have the same isuzu and it’s having a weird issue. It looses power after driving for a few minutes or when it is under a bit of a load. It feel like it doesn’t have fuel pressure or possibly No boost pressure. If you could leave maybe a contact number to reach out to you to maybe get an idea of what’s going on I would really appreciate it. Thanks

[@johndorazio2400]

My 95 npr overheats on freeway new water pump radiator fan clutch head and transmission I’m pulling my hair out😂

[@magnificentshine1]

Yours is doing this?

[@johndorazio2400]

No just over heating grate video only one out there

[@magnificentshine1]

@@johndorazio2400 mine was over heating ended up being the ground cable between the frame transmission on the driver's side by the starter

[@johndorazio2400]

magnificentshine1 how did the ground wire fix the problem can you elaborate

[@magnificentshine1]

@@johndorazio2400 the transmission is computer controlled along with the temp sensor and other sensors. If it doesn't have a good clean ground connection between the frame and trans it won't shift into over drive and someone the temp gauge will read hot. I fought this demon for a couple of weeks. New water pump, rebuilt radiator, new thermostat. My next thing was had to be a cracked head and my son was about 11 at the time and wanted to help. He said dad can I replace this broken wire? I said sure have at it. Bought a $7.45 ground battery cable from auto zone and he put it on. Sure as hell that fixed it completely after I down close to $2k fixing all the unnecessary things.

[@ryanhenderson2384]

Old grease lighting lol

[@magnificentshine1]

You are one of the few that has drove white lightning handing out free smells..... the smell of free🤣🤣

[@ryanhenderson2384]

Hey I've seen it spit chicken nuggets out the tall pipe before lol