Tidnock
Well-Known Member
can you take an injector out and connect the delivery pipe to it, injectors "crack" open so as to give a definitive injection of fuel and no nozzle drip see if the injectors are working, visually
Me Port Engine is DEAD
- Thread starter Tugw
- Start date
Tugw
Well-Known Member
I have done this before but ill do it again over the weekend just to confirm
tinkicker0
Well-Known Member
Black smoke = stuck cold start device leading to overfuelling, bad injectors, bad compression, blocked exhaust or blocked intake.
Since it won't fire at all, i'd be looking for blocked intake or exhaust since all cylinders are affected. did you leave a cleaning rag where it fall into the inlet in rough seas?
Since it won't fire at all, i'd be looking for blocked intake or exhaust since all cylinders are affected. did you leave a cleaning rag where it fall into the inlet in rough seas?
Tugw
Well-Known Member
alb40
Well-Known Member
Head gaskets going pop is very common on these old engines. Is there any water in the oil or crud in the header tank that could point towards this?
A friends boat with the same engines recently had head gasket problems, and the engine would smoke while running. it would start with a bit of coaxing and run but would produce bubbles of gas in the header tank. No water in oil though.
Another thing to check, given the symptoms described.
A friends boat with the same engines recently had head gasket problems, and the engine would smoke while running. it would start with a bit of coaxing and run but would produce bubbles of gas in the header tank. No water in oil though.
Another thing to check, given the symptoms described.
Tugw
Well-Known Member
Nope. head gasket seems ok
Its_Only_Money
Well-Known Member
Hmmm. the black smoke was pre-work so I'd ignore that, you may or may not have fixed the smoke issue but the problem NOW is not black smoke but non-firing on all cylinders. So:
No fuel (or not enough)
No air
Wrong (seriously) injection timing - assuming the IP is being driven which seems the case by your tests.
...would seem to be the only possible causes as you say compression is OK. Is the engine obviously pumping air even though not firing - ie lots of intake vacuum and pressure in the exhaust?
Other than that I would suspect the IP timing (mark it and swing back and forth, see if any different, you can always set it back to where it was and that means a free test), after that I'm afraid I would mark the timing and pull the IP to be checked by a specialist....and scratch my head!
No fuel (or not enough)
No air
Wrong (seriously) injection timing - assuming the IP is being driven which seems the case by your tests.
...would seem to be the only possible causes as you say compression is OK. Is the engine obviously pumping air even though not firing - ie lots of intake vacuum and pressure in the exhaust?
Other than that I would suspect the IP timing (mark it and swing back and forth, see if any different, you can always set it back to where it was and that means a free test), after that I'm afraid I would mark the timing and pull the IP to be checked by a specialist....and scratch my head!
Tugw
Well-Known Member
Thats what i plan to do this weekend after finishing a few jobs round the house,As i said,i have not disturbed the IP but i think it has to be done.its the only think left i think.