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18-02-2014, 05:28
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#76
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Moderator Emeritus
Join Date: May 2008
Location: Fort Lauderdale, FL
Boat: 48 Wauquiez Pilot Saloon
Posts: 5,975
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Re: Engine at all oil and over revved like mad!!
Quote:
Originally Posted by stevensuf
it was caused by a bad diaphragm in the fuel pump allowing diesel into the sump which overflowed and then was sucked into the air intake via the breather pipe.
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Stevo....
Did you get lucky??? Fire her yet??? Running and no noises that make men cry???
If not and it were me... I would sit in the thinking position (rubbing chin) and ponder all things that could be affected by the runaway AND excessive vibration... Mounts, brackets, impeller, etc... easy stuff to check...
__________________
In the harsh marine environment, something is always in need of repair...
Mai Tai's fix everything...
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18-02-2014, 12:03
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#77
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Registered User
Join Date: May 2006
Location: Nicholasville, Kentucky
Boat: 15 foot Canoe
Posts: 14,191
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Re: Engine at all oil and over revved like mad!!
Quote:
Originally Posted by glenn.225
A piece of 1/2 plywood with 1/8 sheet rubber contact cemented to it and a handle on other side, sized appropriately for intake makes a great "Chicken Board". Remove filters, etc so you can cover air intake fully. Shuts down a diesel instantly and cheaply. Always have one at hand when doing anything with fuel governor systems. I always had one except once, and I never want to hear a 6V53 scream like that again guys were dropping tools and running.
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Never use your hand or any other body parts. Rags will be sucked in. Even a rubber flip flop has a pretty good chance of being eaten. A leather soled shoe might stop it. Just need to cut off the air to the intake. Diesel can't run without air.
__________________
John
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18-02-2014, 20:45
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#78
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Registered User
Join Date: Dec 2010
Location: Algarve, Portugal
Boat: Gib sea 43
Posts: 1,008
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Re: Engine at all oil and over revved like mad!!
This happened last June on the way to Bermuda from the BVI's, there was no damage to the engine, other than a leaky injector seat, the main things were to shut off fuel, at stop cock, the fuel cut off on deck would not work and to use thick wood, metal pot/frying pan or the like over air intake, im sure a c02 fire extinguisher would have worked very well or one of those halon engine bay ones would also have done the trick, powder would have done too much damage.
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19-02-2014, 06:43
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#79
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Moderator Emeritus
Join Date: May 2008
Location: Fort Lauderdale, FL
Boat: 48 Wauquiez Pilot Saloon
Posts: 5,975
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Re: Engine at all oil and over revved like mad!!
Quote:
Originally Posted by stevensuf
This happened last June on the way to Bermuda from the BVI's, there was no damage to the engine, other than a leaky injector seat, the main things were to shut off fuel, at stop cock, the fuel cut off on deck would not work and to use thick wood, metal pot/frying pan or the like over air intake, im sure a c02 fire extinguisher would have worked very well or one of those halon engine bay ones would also have done the trick, powder would have done too much damage.
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Glad to hear all is well Steve.... This thread has inspired me to step up my (almost) mediocre maintenance schedule ...
__________________
In the harsh marine environment, something is always in need of repair...
Mai Tai's fix everything...
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19-02-2014, 16:14
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#80
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cat herder, extreme blacksheep
Join Date: Jul 2008
Location: furycame alley , tropics, mexico for now
Boat: 1976 FORMOSA yankee clipper 41
Posts: 18,967
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Re: Engine at all oil and over revved like mad!!
dang this stuff is contagious..mine was last june..
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19-02-2014, 17:08
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#81
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Registered User
Join Date: Feb 2014
Posts: 1
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Re: Engine at all oil and over revved like mad!!
I have a dumb question. The few small boats I've sailed had a manually operated butterfly that is used to normally stop the engine by cutting off the air. Is this not sufficient to stop the engine under these kinds of circumstances? Should I still keep something handy to block the air inlet if something like this happens?
Thx.
Gary
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19-02-2014, 17:22
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#82
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Registered User
Join Date: Jan 2011
Location: Caribbean live aboard
Boat: Camper & Nicholson58 Ketch - ROXY Traverse City, Michigan No.668283
Posts: 6,356
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Re: Engine at all oil and over revved like mad!!
Quote:
Originally Posted by gary_y
I have a dumb question. The few small boats I've sailed had a manually operated butterfly that is used to normally stop the engine by cutting off the air. Is this not sufficient to stop the engine under these kinds of circumstances? Should I still keep something handy to block the air inlet if something like this happens?
Thx.
Gary
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Yes & Yes. As noted above, a properly size throttle body or even a large enough ball valve. Just don't restrict the normal air flow. You can probably find everything needed here. I use a 3" and 1-1/2 on my wet exhaust as through hull shut offs. (Engine & Gen).
Ball Valves, Nozzle Valves & Check Valves
They will custom mix the end connections so I have BSP to hose barb
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