"Neil" wrote:

That's definitely a problem - if it doesn't spray correctly, and at the correct volume and timing, the engine is unlikely to run. If those injectors are new, it's possible that they're defective but more likely that the pumps are defective or not operating correctly. There's probably a video on youtube of someone demonstrating injector atomization. There's some difference between older lower pressure systems and newer higher pressure systems but they "basically all spray a fine mist". If you're not seeing that, that's a good problem to get fixed next.
edit - this video shows a basic example at the 2m30s mark

Hi Neil, Yes the injectors for the D9G have nozzles that are replaced and the body remains the same. They are extremely simple as they basically the nozzles just screw on... Nothing complicated at all about them... Please everyone keep in Mind I just did #1 cylinder not any further... It is very likely that I do have other that do atomize as when I did start it prior I did get some black smoke.. Mostly white smoke but still black after glowing for awhile... I will post the video and see what we have. As I stated if it is more than 3 that do not work then I need to yank the pump and get it checked out. As it could be a bearing or something else inside the pump. With all lines open the jerk pumps might appear to function properly put under load it might be a different story.. Stay tuned...

"Neil" wrote:

Sounds good George. I'm enjoying this saga and when the root cause(s) is/are found, I'm sure we'll all "well, that was simple : ) "

Neil,

Yes simple for you all sitting in front of the computer LOl... Not simple for me banging my head against a wall and taking the IP on and off multiple times... I just wish I would have done this test the first time... For the record in Kindergarten I got a U for unsatisfactory for following directions... At almost 48 years old you would have thought I had it corrected by now.... Off to the dozer now for another round.... I do enjoy her just would love for her to roar.... Take care and talk soon... Thanks for your encouragement and help... Liked the video saw it last night as well doing some more research....

You are overstating the need to remove the whole injection pump. The individual pumps are the heart of the system. The rest is just the camshaft, lifters and bearings. From what the previous video's showed the cam and lifters seem to be working fine. Get the injectors checked out, tested or swapped and go from there.

How brutal was the effort to unstick the rack? Any chance you disturbed any of the pump gear quadrants in the process. They are only clamped to the pump plungers and can be forced out of position especially if the plungers were stuck.

"gvanhouten" wrote:

Hi Rome,

I put back the IP and yes took #1 injector complete assembly out of the prechamber and attached to fuel line #1... Yes the governor was open and IP pump and fuel transfer pump and all was connected and done correctly.. The remaining 5 injectors where inside the prechambers torqued to 105 ftlbs and only #1 was out attached and I cranked her over with my remote starter and watched... Nothing atomized just dripped... I will post new video with all 6 lines out and see what we get...

I have an injector tester .
The injector is connected to the delivery pipe and you pump the handle to pressurize the injector .
As you pump the needle on the pressure gauge goes up until the injector opening pressure is reached .The injector once opening pressure is reached the injector opens and sprays .
It does not dribble unless the nozzle is bad
So test the injectors , make sure they are opening at correct pressure and atomizing .

See if you can get the pumping elements delivery tested. Even if you remove one your self, pull the plunger out and have a look at it. If it is scored or grey around the end of the helix then if might not be cutting the mustard.
I changed a set on an old D8H once as it was lacking power. It made a new tractor out of it!

You don't have to send the whole IP away to have this done just the pumping element assemblies ( they are a matched pair not to be mixed up )

Cheers djcat.

"djcat" wrote:

See if you can get the pumping elements delivery tested. Even if you remove one your self, pull the plunger out and have a look at it. If it is scored or grey around the end of the helix then if might not be cutting the mustard.
I changed a set on an old D8H once as it was lacking power. It made a new tractor out of it!

You don't have to send the whole IP away to have this done just the pumping element assemblies ( they are a matched pair not to be mixed up )

Cheers djcat.

Not sure what you are calling pumping elements? The injector body and the nozzles? Or the Jerk Pumps? I will be posting a video...shortly... They meaning the injectors are not consistent and just pissing not


I believe you are talking the Jerk pumps.... The mini pumps that measure amount of fuel to deliver to each injector....

"Old wrote:

You are overstating the need to remove the whole injection pump. The individual pumps are the heart of the system. The rest is just the camshaft, lifters and bearings. From what the previous video's showed the cam and lifters seem to be working fine. Get the injectors checked out, tested or swapped and go from there.

How brutal was the effort to unstick the rack? Any chance you disturbed any of the pump gear quadrants in the process. They are only clamped to the pump plungers and can be forced out of position especially if the plungers were stuck.

Not sure regarding disturbing gear quadrants... I was as gentle as I could be... To recap I took a nail punch gentle put it in the hole took a small light hammer opened the governor into full open and gently tapped after I pb plastered the rack and its bindings.... It was a smooth stroke and strike that got them unstuck....

Here we go. Please take a look as something clearly is not right...

Not sure if new nozzles need to be matched with new bodies? There is zero washer or anything between nozzle and body. Seems a little odd but that was how the last set was and I did not see anything in the parts book saying anything else...

Please comment on what you think... I did not yank the pump I listened and left it alone. Waiting for a consensus to say yank it...