Flooding an engine...???
- Thread starter Tomahawk
- Start date
vyv_cox
Well-Known Member
You can tell instantly by the exhaust note. On the Canal du Midi we blocked the suction strainer countless times with leaves and debris. Although we knew straight away that there was no water passing through the engine it was often inconvenient to stop, so we had to continue for as short a time as possible.
My anti siphon bleed is led to the trap, so I never see it.
Air in the system won't build up pressure, it will simply bubble through the water as the exhaust gases do. I believe that if you close the discharge on a vane pump, allowing the delivery pressure to reach high values, the vanes will distort so that no more water can be delivered it just goes around the impeller and back out. A sort of safety factor, because if you close the discharge on an all-metal positive displacement pump you will wreck it. That's why they always have a relief valve.
My anti siphon bleed is led to the trap, so I never see it.
Air in the system won't build up pressure, it will simply bubble through the water as the exhaust gases do. I believe that if you close the discharge on a vane pump, allowing the delivery pressure to reach high values, the vanes will distort so that no more water can be delivered it just goes around the impeller and back out. A sort of safety factor, because if you close the discharge on an all-metal positive displacement pump you will wreck it. That's why they always have a relief valve.
Blueboatman
Well-Known Member
I was going to post but without doing illistrative pics, wont.
If the OP isn't that familiar with this engine, possibly £50 well spent to get someone who -really- is to come along and show him how to verify water free oil and cylinders/the full 3 point bleed on the low pressure side/cam in the right place/diaphragm ok or split/cracking the injector pipe sleeves open/feeling the high pressure ping/loosen the exhaust elbow/heat up the air intake with a hot air gun/ether
....
Get it running up to temperature pdq is the name of the game right now.
Then fit a electric pump or outboard squeeze type bulb in line for rapid fuel bleeding
If the OP isn't that familiar with this engine, possibly £50 well spent to get someone who -really- is to come along and show him how to verify water free oil and cylinders/the full 3 point bleed on the low pressure side/cam in the right place/diaphragm ok or split/cracking the injector pipe sleeves open/feeling the high pressure ping/loosen the exhaust elbow/heat up the air intake with a hot air gun/ether
....Get it running up to temperature pdq is the name of the game right now.
Then fit a electric pump or outboard squeeze type bulb in line for rapid fuel bleeding
Tomahawk
Well-Known Member
Reinforcements have been ordered
Many thanks to all for the help so far..
I am familiar with diesel engines... and bleeding fuel etc having worked in the heavy plant industry for many years..
I have organised some help from someone who is familiar with these engines..
Many thanks to all for the help so far..
I am familiar with diesel engines... and bleeding fuel etc having worked in the heavy plant industry for many years..
I have organised some help from someone who is familiar with these engines..