OK- started the motor up after being down for about 2+ months. It was running pretty smooth and quiet with just a hint of
exhaust haze. Here is what I have done to it in the last 2-3 months since it last ran.
installed new flywheel and clutch (not there before)
New 2-nd gen fuel piston fuel pump (no snubber yet) - replaced rubber diaphragm one
New oil seals front and back
new pan gasket
New 60 over valve springs
new manton chrome-molly push rods
A1 head studs
New cummins head gasket ( 1 re-torque after 2 weeks but before first run)
injectors overhauled with 6 new injector nozzles- all springs were tested to be OK ( 5 out of 6 nozzles were crusted over)
re-clocked, cleaned and painted the H1C turbo (not connected to intake yet)
Installed new exhaust manifold (the bus one which puts turbo down and to rear)
So tonight I bled the fuel system out till fuel came out at the injectors- put lines back on.
Kicked in the starter and it started hitting on one cyl - after about 45 sec it started catching on more and then wen to
idle. I noticed right away that it was running kind of rough- kind of shaking on the engine stand. I let it run about 3 or 4 minutes total in about 3 starts. Oil pressure came up within about 5 sec of first catching- so that looked OK.
It LOOKS like there is something different going on in the cylinders- either differences in fuel or compression. (the shake)
All the valves seemed very nice and free when the head was off. I set the valve lash to .010 and .020 per book and came back another day and checked them all again.
I would think there would be a BIG change in the fuel situation going from crap injectors to brand new nozzles-
Do new nozzles take a little time to "break-in" - ????????
I am hoping they didn't accidently get a bigger nozzle mixed in with the stick ones !!!!!!!
I didn't want to run it too long before I asked for help- in case there is something really basic I am missing !!!!!
I have not installed a fuel pressure snubber just after the new 2-nd gen piston pump. Would that cause a shake ?
Also it seems like the mechanical sounds the engine makes are a little louder now (tighter valve springs?)
I only ran it about 2 -3 minutes or so- definitely not time to even come close to normal temp.
Not expecting any head gasket leaks-
running water system unpressurised- didn't see any bubbles. No fuel or oil leaks.
Should I just run it some more ?????? get it up to temp and see if anything changes ?
I will wait for feedback before I run again - don't want to mess up anything now !
Thanks- Tim