I have recently bought a nice little sailing boat
with a fitted Lombardini LDW502, run about 600+ hours and had it running for approx. 20 hours over 4 days on the way home. I had trouble cranking the engine
on the way back (clicking noise
from ignition, no crank), found a loose connection on the startermotor from the ignition - and now it cranks but no combustion (cranks but won't keep going).
I've tried with two different mechanics who knew nothing of it, and I have been told that it's either poor timing or bent valve - but I'm a little sceptic on both accounts.
As I have read from this very informative forum, the TDC is determined by the markings on the crank pulley (2nd picture), aligned with the timing cover (PMS, and three lines) - I also have the indicator of an arrow (triangle) on the engine
block right above the crank pulley, I did not understand what this was for? (3rd picture). White markings are chalk markings, not painted.
I missed a picture with the cover on - but if anybody can help I can deliver such.