IDIBRONCO
IDIBRONCO
Not that I'm aware of. You could try salvage yards or try to find people with and old, parked IDI truck.
Unknown starting issue. Problem almost certainly lies with operator.
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IDIBRONCO
IDIBRONCO
I did see three used 7.3 pumps and a 7.3 "long block" with heads still on it ( 
) that had a pump on it too. A 7.3 pump will work just fine on your 6.9.
) that had a pump on it too. A 7.3 pump will work just fine on your 6.9.I’ve been trying my luck with em, unfortunately all these trucks are still on the road where I am because theres no rust, so the junkyard doesn’t have a single bullnose, bricknose or aero. Ridiculous. Haven’t found a part out within 5 hours of me that has a pump on it. Where did you see the used 7.3 pump?
IDIBRONCO
IDIBRONCO
Sorry. They were on Ebay. I put 7.3l idi pump in the search engine and then put used into the condition.
Rdnck84_03
Full Access Member
It has been awhile since I have had the top off of one of these pumps but I believe that there is a rod somewhere down in there that the shutdown linkage only pushes against but it isn't attached to it so it won't pull on it.
James
James
I’m on vacation in Montana right now and just picked up a 7.3l pump 4812. Will I need to adjust anything to make it work? I saw some people say to swap the injectors out and some who said it doesn’t matter. Any consesus?
IDIBRONCO
IDIBRONCO
You may have to turn down the fuel a little bit, but I'd try to get the engine running before I worry about that. Pumps and injectors wear internally at the same rate. Ideally, they should be replaced as a set. Assuming that you picked up a used pump with unknown miles, I wouldn't bother with the injectors. The miles on the injectors are unknown as well. After you get the truck running and driving, then you can make a decision on whether or not to replace the entire set. Last year, I had a bad lift pump take out an injector pump. I got by for a while with a recently rebuilt pump from an unknown rebuilder. I left the injectors in place. Now I have to replace that pump too. I'm waiting on my new pump and injectors to come in to replace them as a set.
I just installed the new pump, I’m now finally getting fuel to come out of the lines, but they don’t seem to be very high pressure. I took one line off an injector and it was not shooting out crazy hard, looked like it had about at much pressure as a spray bottle. Engine is still not starting, but didn’t get too much time to crank. Concern is that it fire with starting fluid but never with the fuel (that I can confirm) was making it to the injectors.
IDIBRONCO
IDIBRONCO
There won't be a lot of fuel. It doesn't take much to fire the injectors. Those fire more off of pressure than volume. As long as the nuts on top of the injectors aren't tight, there won't be much pressure built up. They can still be stubborn for a while, even after getting fuel to the injectors. Just try it a little more.
Cant Write
Full Access Member
You’re in good hands and I’m the resident idiot around these parts. But I’ll offer a thought that may not matter.
Are you flooring or blocking the IP wide open when cranking and trying to bleed the lines?
Maybe it’s wrong, but I always floor it until I get it to fire and then modulate to keep it running.
Flame away. OAO
Are you flooring or blocking the IP wide open when cranking and trying to bleed the lines?
Maybe it’s wrong, but I always floor it until I get it to fire and then modulate to keep it running.
Flame away. OAO
Jesus Freak
Full Access Member
Good call.....
On these old carbureted diesels, you have to set the choke by pressing the acceleration to the floor once........ lolol I'm kidding I'm kidding!!!!
But yeah, it's a simple but possibly an overlooked thing, FLOOR IT TILL IT FIRES!!!
You joke, but you're supposed to tap the throttle to set the fast idle when cold
IDIBRONCO
IDIBRONCO
I always do.
Jesus Freak
Full Access Member
We call that the "electric choke" on our carbureted diesels...You joke, but you're supposed to tap the throttle to set the fast idle when cold
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Got it to run. Just had to get the glowplug system working right. First time in a very long time for this engine. Started it about 5-6 times in the last hour, all went similar to this, including the immediate shutoff after a second or so.
Hoping it’s because I haven’t put the throttle back together yet . Got it stuck under the fuel lines when I wasn’t thinking last night and didn’t have the energy to fix it today.
Feels very good to see that this thing works. The transmission seems to be in gear when I expected it to be in park, as it tried rolling backwards away from me, so I’ll have to figure out what’s what on the shifter as it’s all faded away now.
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