1984 6.9 brought to me to fix leaking line from filter to ip. Degreased engine, and replaced seals on line, now...no start. Removed ip to check for obstructions-none (that I could see). Replaced inj feed lines and have fuel at injectors. No bubbles from filter to ip or at ip return line.(have clear tubing to verify) Replaced gp's, gp controller and relay. All bad, wiring is good, as new gp relay can be heard clicking on. Checked comp--320-390 psi.-- With gp's removed verified that diesel spray is coming out of cylinders.(x5) bypassed filter with new fuel to ip via elec pump--no start. now what?

 

Have you tried a whisp of either? Do this only when cranking and before the air filter if it pops theres something wrong with the glow plugs. Is it cranking slowly? the faster it cranks the better.

 

tried ether shot. When the ether hits the cylinders, it sounds like the engine wants to advance itself?? like the timing is off.

 

That would cause it, are you marks lined up? was there a ip just installed on it? how did you pull the ip? If you took the housing off the timing could be off

 

Are you getting smoke out of the exhaust, while you are cranking on it.

I have a feeling the starter is not spinning it fast enough, if your glow plugs are indeed working.

You want to disable your glow plugs before giving it even the smallest shot of either.
If the motor seemed to try to lock up or rattled loud you give her too much either.

 

well, I put in diesel kleen, a new fuel filter, bled the injectors, recharged the batts and after about 5 tries, she started, but ran poorly. Lots of white smoke, and the eng temp light came on after about 5 minutes of idling. Does straight diesel kleen cause white smoke? also, it didn't rev like she used to, but since I had the ip off, it may have moved time slightly and I won't discount that. Incid...it is within 1/32" of the notch on the timing cover.

 

That's alot, put it a dimes width advanced (mark on ip to pass side of mark on timing cover) the not revving could just be air in the system.
As for the temp light pop the rad cap and check for bubbles, if you see bubbles your headgaskets may have quit gasketing. Or fingers crossed its a bad sender or has air in the system

 

Hey Tom, if his Temp light came on, what about his injectors....if they are bad they could be dumping his fuel into the cylinders and he said he only got diesel spray out of 5 on the cylinders anyway, maybe his EGT's are through the roof??? Im just brainstorming, white smoke from a diesel engine. Cause if he has a bad pre-cup it could dump radiator fluid into his cylinders....

 

Didn't even think of that!
And the bad injectors would cause the hard starting being they may not even atomize the fuel

 

Did you degrease the engine while it was running or hot? The injector pump can be damaged by thermal shock.

 

Started it up again today after about 9 tries, needed ether and a half pedal of throttle. Checked pressure in the rad and it held steady at 15 3/4# for at least 10 minutes. Still smoking alot. My next questions are: Will the 3 bad injectors cause it to smoke excessively? Will diesel kleen cause excessive smoke? Is it better to test suspected non-functional injectors or just replace them? How much is the typical injector test? Will 3 bad injectors cause the engine to get hot? Also, in regards to earlier question: I degreased the engine after it had cooled off.

 

The local injection shop tested an injector for my in less than a minute without charging anything. It really doesn't take much time for them to do it, but everyone is different and they may be stingy and try to stick you with a minimum charge.

Depending on how bad the injectors are, even a single injector with a jammed nozzle will make a horrible mess.

 

Am I understanding right, this is not your rig, but one you are working on.
Was this rig running when you started messing with it, if so was ir running on all 8.
Why and how did you pull the IP, this sounds like you may have a timing problem now.

 

This rig is a customer's. Came in running, but leaking from transfer pump hard line to ip. I wanted to work on a clean motor, so I degreased it. Covered the intake with a plastic lid backed up by a pc of plywood that I screwed down tight with a wing nut.
Planning on replacing the 3 injectors when I order some online, $17 vs $55 at the local store...The timing is appx .040" off to the pass side from the mark on the oil fill cover plate.
I'm thinking that the three injectors are not contributing, causing the smoky exhaust, loping cam sound, and lack of performance?
Correct me if I'm wrong, since this is only my 2nd diesel repair. I also made 3 wmv files of it running but don't know if I can add it to this reply.
Also, is the eng. temp red light below the glow plug light from a different source than the temp gauge on the dash panel?