751 Peugeot Rebuild - Cam and Inj Pump gear indexing

[t_jones98]

I picked up a 1998 751 with the Peugeot diesel that isn't running. Last known issue was the rancher was bringing a load of gravel back to the barn and it just died. Rancher has since passed as well. Guy I bought it from bought it second hand with the idea of getting it running so it sat for another couple years. Needles to say, what actually happened to it has been lost. I was given a bunch of receipts and workorders from the past that show 2 inj pump replacements, and a new head (that one was interesting). But yet they couldn't get it running. Enter ME! First thing I check is the pickup tube in the tank.. rotted off. Ok, order some parts and temp bypass that getting fresh fuel from a can. Second, replaced the battery and glow plugs. Turns over well, glow plugs get wet, so it's getting fuel. But doesn't fire and pumps out Next step is to check the timing of the cam and inj pump. The service manual says to rotate the engine until the TDC indicator hole on the flywheel lines to the engine housing. But, being a 4stroke engine, technically, the cam could have two indexing points at crank TDC correct? Without pulling the valve cover, is there a good way to ensure the cam is indexed properly (both valves closed for cyl1)? Also, same goes for the injection pump as it has the same gear size as the cam. So I'd assume, two indexing points. Anyone have any pointers? Thanks, Todd.

 

[foton]

when turning it over is there white smoke? it might be good to do a compression test just for your own knowledge. I know nothing about that french engine.

 

[t_jones98]

when turning it over is there white smoke? it might be good to do a compression test just for your own knowledge. I know nothing about that french engine.

Black. There is a perf diesel shop in town that I might take the injectors to to have them tested. Then try to do a compression test as you mentioned. Then look into the pump.

 

[foton]

Black. There is a perf diesel shop in town that I might take the injectors to to have them tested. Then try to do a compression test as you mentioned. Then look into the pump.

in most cases black smoke is a over fueling condition, I think you are on the right track

 

[Tazza]

in most cases black smoke is a over fueling condition, I think you are on the right track

You're right that it could be 180 degrees out.
I don't know the procedure off the top of my head, but i'd assume to get cylinder 1 to TDC, watch the valves and see when they are both closed for the power stroke.
Get some I believe 8 or 10mm bolts, there will be a hole in the cam pulley, crank and injector ones too that you insert and screw into matching holes in the block and pump. Lock them all into place and put your belt on, keep the side opposite the tensioner tight so you know you are not a tooth out.
These motors when running, are sweet as. I feel the starter is a bit small, but when it's running, it's very smooth.
I hope the timing wasn't too far out, if that was the issue as valves can be bent if it's not right, but 180 degrees out, means it' still not opening when a piston is there, just not the right time for fuel to be injected to go boom.