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Messages - Stevenbolster

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Engines / Re: LD1 - the fuel pump issue again...., latest update
« on: September 09, 2020, 01:53:48 PM »
Greetings, friends.  Just an update on the issues with the LD1...

Got the pump serviced (he said it was badly worn) and the engine revs well now.  The remaining issue is that I now can't get it to idle!   Its a marine installation with a direct shaft.  Changing from forward to reverse involves moving the shaft backwards.  When I move it into the neutral position the load comes off (obviously) and the engine happily revs out to its governor limit,  making things spectacular and stressful, both for the gear and for me!  The speed control mechanism has no impact on revs when in the 'run' setting. 

Any ideas?

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Engines / Re: LD1 - the fuel pump issue again....
« on: July 12, 2020, 05:28:16 PM »
The linkages are all good.  The rack moves the full travel with knob in start position, but  the engine wont rev beyond 580rpm. The fuel appears clean and no air. Looks like the fuel pump isnt delivering sufficient fuel.  My inclination is to remove the fuel pump and give to a specialist for service.

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Engines / LD1 - the fuel pump issue again....
« on: July 08, 2020, 11:11:40 PM »
Some time ago the members here assisted me with a fuel pump issue when I was decarbonising my LD1.  Well, another issue has arisen which you might be able to help with.

The engine is now in the boat and starts/runs smoothly but unfortunately only at about 580 rpm.  The plate indicates she should do 1500 rpm.  The speed control rod has little or no impact  on the revs.  When the knob is turned back from 'start' to 'run', the revs drop away and it will eventually stall.  I've checked that the link spring from the rod is intact and in place, and followed the fuel pump setting procedure as per the instruction manual (P35).

Before I start pulling the timing cover off to check the governor assembly  (pushing the envelope as far as I'm concerned),  I thought I seek some group guidance.

Any ideas?

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Everything else / Cable stop modification for Lister LD
« on: April 01, 2020, 03:06:45 PM »
Is anyone aware of a modification to allow activation of the engine stop on an LD, using a pull cable?  Im trying to improvise one but would hate to have to reinvent the wheel.

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Engines / Re: Lister LD1 - Fuel pump issue
« on: November 12, 2019, 04:26:34 PM »
Thanks, gentlemen.  She is now running.  Needs a little fettling but a big step forward.

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Engines / Re: Lister LD1 - Fuel pump issue
« on: October 26, 2019, 10:32:12 PM »
Thanks.  That makes a certain amount of sense.  Do you happen to know what its function is?  It confused me that it is not shown in the manufacturer's exploded diagram of the pump, or the list of parts.

I suspect my fundamental problem is still air in the fuel feed.  I'll just have to persist with the bleeding.

Thanks again.

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Engines / Lister LD1 - Fuel pump issue
« on: October 25, 2019, 12:43:20 PM »
I've been de-carbonising the Lister LD1 out of my boat, following the guidance in the handbook.  Everything has gone reasonably well, with everything back together with new head gasket etc.

I'm at the stage of bleeding the fuel system  and trying to get it running.  All good to the feed pipe where it goes into the injector, confirming fuel squirting as the crank is turned.  I connected it to the injector and got injector 'creak'. Great!  Went for a start but after about half a dozen turns the creak stopped.  Disconnected the feed pipe and no 'squirt'.

 The handbook says to remove the delivery valve holder and spring, lift the valve and allow fuel to flow.  Then put it back together.  Simple. Unfortunately it doesn't mention the little 'plunger'-type component with a slotted head, which sits inside the spring.  Neither does this appear in the exploded diagram of the pump.  Unfortunately, when I removed it I didn't pay attention to which way up it goes.  i.e. does the 'plunger' go on top of the spring, with the slot upper-most, inside the holder; or does the slotted face go downward, directly onto the top of the valve.    I've tried it both ways, and without the plunger altogether.  On each occasion the result is the same, - fuel squirts from the injector feed pipe for about half-a-dozen cycles of the pump, then ceases.

The fuel tank is about 8 inches above the level of the injector so pressure to the pump should be good.  Its fresh diesel and a new filter.  The injector was serviced by a specialist injector company. 

Any adive or guidance would be appreciated.  I've attached a photo of the 'plunger', and the exploded diagram.

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