YGM10 failure, Gosport, need (non urgent) assistance

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hopern1

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Returning to our Gosport boat yard deep water swing mooring this afternoon the YGM10 motor died 20 yards from her bouy. Fortunately the boat yard ferry took us the 20 yards to the bouy , we moored up and another's days adventure ended successfully (just about).
Challenge now is to work out why the engine died.
Have no history of engine maintenance so will need professional assistance. On addition I am available all next week and would like to learn as much as possible about diesel engine maintenance.

Suggestions?
 
No way that I'm an engineer but I understand the basics of induction, compression, power, exhaust and will happily come out to your boat some day next week to give you some pointers.

Initial thought is fuel starvation.

PM me if interested.
 
It's probably the fuel supply somewhere, 99%. Check for blockages and for air leaks from tank, through filter to injection pump, it will be there somewhere. Change the filter anyway as a first step.
 
savageseadog said:
It's probably the fuel supply somewhere, 99%.
Click to expand...

+1. Short of major mechanical self-destruction, it's about the only thing to go wrong on those engines.

Good first step would be to change the filters. You can do this yourself before calling anybody out. If you can't do this yourself, learn - it's something any sailor with an inboard engine must know.

Pete
 
Steps executed at the time:
1. Check fuel tank : 2 inches of diesel left in it. Poured in a load of fresh diesel through a special filter funnel.
2. Engine restarted for 30 seconds and then died again. Would not restart despite multiple attempts.

Planned next steps
3. Planning to go down tomorrow and see if the new diesel works (possible settlement of diesel tank contents).
4. Ordered new filters this morning. Will try with those fitted once they arrive (expected Tuesday will probably try on Wednesday).
5. Will talk to some of the people as suggested in thread earlier.
 
hopern1 said:
Steps executed at the time:
1. Check fuel tank : 2 inches of diesel left in it. Poured in a load of fresh diesel through a special filter funnel.
2. Engine restarted for 30 seconds and then died again. Would not restart despite multiple attempts.

Planned next steps
3. Planning to go down tomorrow and see if the new diesel works (possible settlement of diesel tank contents).
4. Ordered new filters this morning. Will try with those fitted once they arrive (expected Tuesday will probably try on Wednesday).
5. Will talk to some of the people as suggested in thread earlier.
Click to expand...

If you were down to 2 inches of fuel I expect the filters are full of ****e :eek:
 
SimbaDog said:
If you were down to 2 inches of fuel I expect the filters are full of ****e :eek:
Click to expand...

Also a bit worrying that there apparently aren't any spares on board. As I mentioned in a recent thread over on PBO, I would seriously think twice about going to sea without at least one spare of primary and secondary filter, hence having to buy the expensive Volvo one at short notice. I normally carry at least three; on that occasion I'd miscounted a couple of spare oil filters as fuel filters since the boxes look similar. I've just added an inventory sheet to the back of the engine log book to keep better track of these things.

Pete
 
hopern1 said:
Steps executed at the time:
1. Check fuel tank : 2 inches of diesel left in it. Poured in a load of fresh diesel through a special filter funnel.
2. Engine restarted for 30 seconds and then died again. Would not restart despite multiple attempts.
Click to expand...

Assuming that your fuel pickup is sensibly placed above the bottom (by two inches?) you'll have a system full of air. Bleeding a 1GM10 is a piece of cake ... as far as I can remember you crack open the union at the injector and turn over, operating the decompresser, till diesel starts spurting out there. Five minutes' work after you find the right spanner.
 
If the engine stopped through fuel starvation, quite possible if the pick-up was at the surface of the fuel left in the tank, putting fuel in isn't enough. You have to bleed the fuel system, starting with the primary filter, then the secondary filter (usually behind the exhaust manifold) and finally the HP fuel pump on the front of the engine.

You will also have to do this after swapping the fuel filters.

An alternative, if you have a water separator type of primary filter, with a glass bottom, check this for fuel. Fuel is red, water is clear if you top up from a fuel barge. There is a drain plug on these which ought to allow you to drain any excess water from the unit, but do so into a plastic or paper cup. A Flora tub may be needed if there's not a lot of clearance underneath it.

This is a vital skill for a yachtsman with a diesel. You can pay someone to winterise and re-commission and engine but at sea it can be a huge problem which is why you should carry spares.
 
My thanks to all who replied and I have taken many suggestions on board (especially the one about spares).

I can report that thanks to the assistance of BAV34 of this forum and his time and patience I am now in the possession of
1. a working engine
2. the knowledge to change the filters and purge air from the system.

All in all, a rather fabulous day yesterday.

Many thanks to all, and especially to BAV34 who so generously spent the time to get me up and running and perhaps even more enduring a gift the ability to do it myself (feed a man ..... , teach a man .....etc).
 
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