Injector Joy

[dilvoy]

Astrogoth, I saw the foto of your fuel lift pump with the kinked intake line. Have you installed the new one yet and did it make any difference in regard to the white smoke? Did anything change as far as ease of starting or anything else for that matter?

[Astrogoth]

Well the wind came up strong and made me call it a day. Tomorrow I should know. I noticed the pump rod is firmly against the inner bottom lip of the pump opening on the block. So firmly I hesitate to crank the engine even for a 1/2 second to retract it lest it try to go forward first and lock-up the whole works. I'll try to pry it up first. The rod isn't small but almost as thick as a thumb.

Yah, I didn't notice the damaged intake line on the pump until after I got it off the engine. I'd estimate a 60-70% restriction. It must have been like that for years. No signs of the impact that did it. A new, undamaged pump should work a lot better. Cross my fingers.

[dilvoy]

It should have fallen down to touch the access cover plate by gravity. It is very smooth and slippery, so it is hard to get it to slide back up. I usually wipe it with something like brake cleaner so I can get a grip in it. The shaft at It's most inner position will not fully enter the block surface. You can put a socket on the bolt on the front end of the crankshaft and rotate the engine, if you think it is at it's farthest out position. You will have to overcome the high diesel compression so don't go too fast. It just makes it harder. If you listen you may even hear the compressed air leak past some valves. Just remember that when you are tightening the pump bolts, you should be tightening against the pump spring pressure. If the bolts get firm before the pump body is against the block, you may have slipped of to the side of the rod.

[Astrogoth]

It should have fallen down to touch the access cover plate by gravity.... The shaft at It's most inner position will not fully enter the block surface....

Wanna bet? At the moment mine is inside the block with its pump end pressing hard against the inner wall of the pump cavity. Very hard.

I will try the socket idea tomorrow.

[TheHummerguy]

I replaced my leaky pump weeks ago...though it can be a bit difficult to get to it is not impossible.
The shaft is in there at first tightly becasue the oil around it is acting as a seal....I pulled mine out and cleaned it off and coated it down with motor oil before re-installing it...now it was like greased lightning,dam thing would not stay so I could get the pump in place to get the bolts in.The installers notes said to use a flat piece of something rigid...I used a slim jim door opener, I held the shaft in and put the pump up there and at the same time slowly slid the slim jim out from underneath....worked for me....I also cranked the crankshaft around but I for one did not see any difference in the the depth at which the shaft would go in so I just figured I was missing it my mark.

[dilvoy]

There is a jumbo size lobe on the camshaft that that shaft rides on. The lobe looks similar to the lobes that the lifters ride on. The pump lever is never fully free of pressure from the rod, but if you can find the low spot it will make it easier to start the two bolts.

[Astrogoth]

Did the pump R&R today. No improvement. The only thing I noticed was that when I first started it after the new one was in a few of the fuel lines downstream of the pump leaked for a few seconds. Some kind of overpressure? They quit after a few seconds and the truck runs well.

I cleaned the radiator stack. Check the pictures thread for a good one.

Tomorrow I plan to advance the incector pump an extra 1mm for a totsl of 2mm. The reason I didn't go that far in the first place is the pump seems to be hitting something at the 1mm mark. I plan to bend whatever it is an extra 1mm tomorrow. My floor jack handle works well in this capacity.