Exhaust elbow is clear of blockage, but it has an internal hole in the water jacket so water is entering the exhaust very high up and so could conceivably have run into exhaust port and caused the hole in it's side wall. Saturday we put on a different elbow, front exhaust and water lock from my friend's boat. No improvement
. Put on rocker cover from his engine in case my breather was faulty. No improvement
. Checked spill timing carefully - it's exactly on the mark. Connected clean diesel supply to lift
pump ard ran engine on that for some time. No improvement
in UK said remove head
and check piston is 22thou proud of block on TDC. Con rods bend easily in these engines say if water got in combustion chamber. Suppose I will have to try it, but can't really buy the idea when compression is so good.
:Thanks for your tip, but I am leaving alternator belt disconnected until I get engine running ok. Will address potential alternator probs then. All tests done with engine cover off.
To summarise: engine now seems to run pretty well out of gear. Put in gear and open throttle and you get clouds of diesel smoke and no power.
Next plan??? Will get diver to check folding prop again
. Will speak again to the diesel specialist who overhauled my injector pump
- could he have made some error? Perhaps I should try the injector pump
from my friend's boat?
Mechanic could only spare me 3 hours on Saturday, but he has no better ideas.
I feel really stupid over this; there must be something obvious we have missed!