6.2 timing issue

[squarebodybo]

Looking for some help. I have an m1009 i purchased and i am having trouble timing it. I put on new injectors, timing chain, electric fuel pump, and have two IP I've both tried with same result. IP alignment pin is in correct oval hole on gear. My issue is my load advance lever does very little if anything and I get black smoke if I press the pedal down. If i adjust full retarded or full advance my lever does nothing. With both pumps. It idles great with no smoke at whatvi feel is best timing location. 1/16 retarded from line. If I fully retard or advance I do get excessive white smoke from crank. To add, my electric pump is showing 3.5-4 psi. The 6.2 should have around 5.5 to 8.
Any ideas on how to fix this? Is it bc my new TC and gear seat is tight and new? Would it be my low psi from pump? Should I screw in the adjustment screw on advance lever? I just don't know why my advance lever doesn't work on both of my pumps at any location I place IP. Advance lever worked before all of the work i did. My injectors were in bad shape and my original timing chain was way out of spec.

 

[squarebodybo]

Thanks for any help provided. I have looked over all of the tech manuals and stenadyne books.

 

[Barrman]

It reads as if you have tried two different used Injection pumps. Is that correct?

It also reads as if the fuel rate has been turned up on at least one of the IP units. Black smoke is too much fuel for the air inside the cylinders. Without a turbo the only ways to get black smoke is with a blocked fresh air supply and or a turned up fuel rate. Even with a turned up fuel rate the black smoke should only be at very high throttle settings and load. But that will be very light black smoke that is hard to spot with a healthy engine.

I need to mention that looking in the mirror at night with headlights behind you. You will think you see smoke no matter the tune or throttle settings. Even though there is no visible to the eye smoke coming out. This visual phenomenon is related to the properties of the headlights. Or at least that has been the conclusion of past threads here about the issue.

I have a fuel pressure gauge on one of my 6.2 trucks. It addles around 8 psi from the mechanical pump but settles down to 5-6 psi when cruising down the road. You should not be getting black smoke at the same time you have fuel starvation issues. You can have one condition, but not both at the same time.

Just out of curiosity what are the numbers on the IP data plate? It should be DB2829 ???? If yours is DB2831 ???? That is a 6.5 IP.

Here is a video about IP indentification:

Then we get to timing. Which reading your original thread looks like you have been to both ends of the timing spectrum and everywhere in between. Without some kind of timing device it is really difficult to comment on if you have it correct or not. The fall back method is to use the advance lever to test timing. Yet, yours doesn’t do anything. Which gets me back to used injection pumps of questionable quality. I have had pumps with non functioning advance levers. So, that is possible. Here is a video about the different methods of checking the timing:

 

[squarebodybo]

That is correct on the two pumps. I have the original 2829 J code pump. I bought a NOS pump as well. Still in wrapper.it was I believe for an 1989 HD van. I'll look up pump number when I get home. I know the plunger is larger on that one. I have opened the nut on the advance plunger and on both IPs they seem to have unrestricted movement and spring. Also,Both fuel bowls do not have any crud or buildup inside but I know that doesn't mean they are good IP.
Black smoke comes while in park and pushing accelerator as if your revving the engine. At idle there is nothing or if you accelerate slowly only a faint black smoke. Just strange. I think I may turn the trimmer screw on LA arm two turns and see what's happens tonight and put the NOS IP back on.
I have watched those videos. With timing by ear. 1/16 retard sounds best at the moment on the newer pump. I appreciate your time in attempting to help sir.