chell Posted June 20, 2018 Report Share Posted June 20, 2018 Bleed engine boat boat will run anything from hr to 2 on tickover. Any higher revs. Moving dies within a hr. Thinking air in fuel lines. But beside that now all of a sudden getting a lot of black smoke. Any advice much appreciated. Fuel Filters changed. Oil filter changed. New oil. Checked for any obvious leaks none detected. HELP Link to comment Share on other sites More sharing options...
WotEver Posted June 20, 2018 Report Share Posted June 20, 2018 Something around the prop? One of the prop bearings partially seized? Stern gland too tight? Link to comment Share on other sites More sharing options...
chell Posted June 20, 2018 Author Report Share Posted June 20, 2018 Nope none of them. Thanks for quick reply though. Link to comment Share on other sites More sharing options...
70liveaboard Posted June 20, 2018 Report Share Posted June 20, 2018 Perhaps the fuel injectors, if old, can be a problem. Link to comment Share on other sites More sharing options...
ditchcrawler Posted June 20, 2018 Report Share Posted June 20, 2018 Black smoke could be lack of air 1 Link to comment Share on other sites More sharing options...
chell Posted June 20, 2018 Author Report Share Posted June 20, 2018 Bleed engine. Getting good at it now. Engine runs perfect no miss beats. But will then revs up a few times n die. Then have to re-bleed. Which makes me think àir in pipe. Black smoke has only just happened. Checked air filter. Pancake type. Then breather pipe n cap all looks ok. Link to comment Share on other sites More sharing options...
Boater Sam Posted June 20, 2018 Report Share Posted June 20, 2018 (edited) Water in fuel Tank vent blocked Lift pump drawing air - diaphragm - check for fuel in oil Fuel filter/s blocked/water stop solenoid worn Overheating Air filter blocked/wet Engine consuming its lubricating oil - potential run away Edited June 20, 2018 by Boater Sam 1 Link to comment Share on other sites More sharing options...
Tony Brooks Posted June 21, 2018 Report Share Posted June 21, 2018 0.5 mm hole in the banjo bolt in top of filter bocked so air builds up in the filter rather than leaks back to tank but the black smoke does not seem to fit. Link to comment Share on other sites More sharing options...
chell Posted June 21, 2018 Author Report Share Posted June 21, 2018 This has been checked and looks ok. Link to comment Share on other sites More sharing options...
Bee Posted June 21, 2018 Report Share Posted June 21, 2018 First thoughts re. black smoke is air filter, remove the thing and see what happens. One way to isolate a stack of odd problems is to get a container full of nice clean diesel, 2litre milk containers are good, bodge up some sort of plastic tube, place it above the height of all the pumping gubbins on the engine, bleed it and see what happens, this will obviously cut out dirty tank problems, filter problems and maybe lift pump problems. Link to comment Share on other sites More sharing options...
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