[VApoult]

I tried making a cap tool. It couldn't hold the pressure so i bought the kent more tool off ebay for $30. Just finished caping off injecters #1-#7 individualy all the injecters checked out now im on to check the driver side.


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[VApoult]

I know this thread is probably dead but Im sure theres others out there that this will help. I capped off injecter #4 tonight no smoke no knock. So im going to order one injecter and see how it goes.


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[Aaron@LDS]

Good job finding the injector without any special tools. However, if you remove the lines on the injectors rust usually falls into the inlet on them. This can clog them with the debris. I strongly suggest replacing all 4 on the drivers side. It's a small cost for the work involved to replace one at a time as they fail from the contamination.

 

[VApoult]

I would if i had the money but injecters are expensive and headaches are free. It actually wasn't that bad. I got the injecter in last night. As far as fuel lines they are fairly new with only 2k miles on them so im cleaning and oiling them to reuse. Any suggestions on cleaning the dirt that fell onto the valves with the cover off? Will just an oil change clean that out?


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[Zach986g]

Ok guys I'm a long time reader and first time poster here. I did read the sticky and know how to work a search engine. I apologize if this is a dumb question but I'm not finding what I need.

So the condensed version of my story is I have a bad fuel knock and lots of black smoke (no diesel in oil). I understand there is most likely one or more injectors stuck open. Now being a broke college kid logging part time to work my way through college, I don't have the funds to buy a Tech2 or EFI right now.

Is there any way to check cylinders through glow plugs? I think I read something somewhere about pulling glow plugs and FICM fuse and turning over the engine. If that make any sense, could some one explain to me a little more detail what the proper procedure is?

Also do injectors go bad like this overnight? The injectors where checked and resealed with new lines not 2K miles ago when the head gaskets where done. The truck ran fine with no issues not 6hrs before It started knocking. I did forget to plug in the block heater that night and I had to prime it by hand to get it to start in the morning. I changed fuel filters and let it warm for the whole day. I also have been running the white Diesel Kleen in every tanks. I got balancing rates jumping to 11 on cylinders 1,2,3,7 if that means anything.

This is my first diesel truck so I'm learning as I go. I have a bit of experience wrenching on gassers and heavy diesel equipment. Sorry for the long post. Any and all info is much appreciated.

 

[Zach986g]

I would if i had the money but injecters are expensive and headaches are free. It actually wasn't that bad. I got the injecter in last night. As far as fuel lines they are fairly new with only 2k miles on them so im cleaning and oiling them to reuse. Any suggestions on cleaning the dirt that fell onto the valves with the cover off? Will just an oil change clean that out?


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I have a lbz that has brand new injectors all around and after the were install. I now have a. Knock. And it sputters at take off. And still have been trying to figure out. Why

 

[Ron Nielson]

Start by pulling the electrical wiring off each injector separately, one at a time. Injectors that are good will have a bigger RPM drop and make the idle rougher; injectors that are already bad will have little difference when you pull the injector connector. Like pulling spark plug wires off of the spark plugs. Only the ones that work contribute to the running of the engine.

 

[cfell]

Old thread.. but, if you have dirty engine area, loosen the dirt and suck up with shop vac and/or dust off with compressed air.. then wipe down with solvent... don’t want to introduce any trash more than gov requires

 

[rayputney83]

Could plug in a spare injector one at a time and start the engine and if there is no change in the way it runs than that is one giving you issues

 

[EvilOgreLorde]

[snip] The injectors that are stuck open will still allow fuel to enter the cylinder. This fuel will spray out the glowplug hole. All this test will do is show you which injectors may be sticking. [/snip]

I know this is an OLD thread, GREAT INFO! I have been searching for fuel knock info as i think i have a hopefully fuel knock in my Kodiak. Man o man finding this thread 2 weeks ago would have been way helpful. I pulled my injectors on just to take them up to get them tested at the local fuel injection place. good info i will keep this in my back pocket for a bit. I am running LBZ, i am new diesel owner so i do not know how much of this will cross reference.