Engine stopped.

jamie N

Well-known member
Joined
20 Dec 2012
Messages
6,274
Location
Fortrose
Visit site
I didn't know whether to place the thread here, PBO or in the Lounge, so bear with me please.
Today, my wife dropped me at the marina with the "I'm shopping,.....a couple of hours....essential stuff etc.etc." thing.
Great, I'd a few things to do on the boat, including giving the engine a 'run'.
Onboard, I started the engine and ran it in gear, the plan being to give it a bit of a workout, good charge on the batteries and check that everything worked.
About 45 minutes later, I'm fabricating having a spice rack by my stove (seriously), when the engine began to die, and then failed within a period of about 5 seconds, which is quick.
OK; the temperature and oil pressure were fine, and there were no strange noises, or other hints at all. The engine had been chugging along at about 1/2 power on the pontoon, and appearing content.
A bit vexed by this, I shut everything down, pondered for a minute, then pumped the fuel bulb, and started the engine in the usual way. It caught and ran perfectly for a minute, before I became aware of a whining sound, but from the pontoon where my wife was standing, asking why I'd not answered any of her calls......? Ah, that's the whine then.
OK, engine off, shutdown the system and a full on burst of "Oh sweetie, I'm SO sorry! I didn't hear your call......."etc.etc. She came aboard, a cup of tea was prepared and chit chat about queues in Aldi were listened to attentively.
Now, tomorrow, I'm back at the boat, and (of course) still want to know why the engine stopped, and restarted so easily.
It's got fuel written all over it, however I checked the tank, and there was fuel visible.
Here's the thing though, there's no mast on my small Folkboat, the fuel tank is 'fore & aft', with the fuel pipe at the front of the tank, therefore the fuel lays away from the pipe, thus with the mast off, a fairly small light boat is lying a few degree's bow up/stern down, the fuel pipe 'uphill' in the tank.
Plan for tomorrow is to fill the tank a bit, and start the engine to see what happens, (without the pressure of an Aldi intervention cutting into fault rectification.)
Any ideas to counter the fuel thought? No odd smoky stuff from the exhaust, nothing abnormal heard apart from the "whine", which isn't really too unusual.
 

jamie N

Well-known member
Joined
20 Dec 2012
Messages
6,274
Location
Fortrose
Visit site
Tank breather closed or blocked?
Good point, but the tank is very 'exposed' in a locker, and was clear.
What does your fuel filter look like? Could it be blocked with detritus impeding fuel flow?
That was a thought also, but checking filter#1 showed no signs of restriction or detritus.
Something round the prop?
I'd not thought of that, albeit the sound of the engine dropping off didn't have that 'tone' to it?
Slightly aside, as I'd not thought about it, would you reckon to have a greater chance of something wrapping around the prop in a crowded marina, or at sea close to land?
Today I'll put some more fuel in, and see what happens.
 

jamie N

Well-known member
Joined
20 Dec 2012
Messages
6,274
Location
Fortrose
Visit site
I went back to the boat yesterday and checked the fuel level, which was low, but I didn't think too low, so as to have an impact on the engine running, but chucked in 2-3 litres anyway.
The engine started immediately and ran in gear without fault for 3/4's of an hour, so all is well.
I believe that the problem is 'the lip' at the point of where the fuel pipe is welded into the tank. Not a big deal at sea, as the boat's moving around so much more.
Actually, I just had an idea that I'd be able to check 'the lip' with my cheap little USB camera phone gadget to either eliminate it as a theory, or not. ?
I should also keep a little bit more fuel in it as well, albeit without a mast since March, I'm somewhat confined to the pontoon.
 

ChromeDome

Well-known member
Joined
25 Sep 2020
Messages
3,902
Location
Commonly in Denmark. Dizzy Too, most of the time.
Visit site
First thought is fuel starvation.

Systematically that means
  • tank fuel level - enough?
  • pickup from tank - clear?
  • fuel line - clear and tight?
  • feed pump - working?
  • filters (pre- and engine) - clean - also view bowls - no suspecious content?
  • air sucked into the feed - hard to detect, but start by checking assemply points
  • diesel leaks on pressurized lines - would be visible and diesel-smelling
.. to get started..

Edit: Just saw your update which sounds good. My above comments still stand, at least for inspiration
 
Last edited:
Top