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#555288 - 22/01/19 08:16 AM
Re: Won't idle.....
[Re: TBM]
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Talk Morgan Enthusiast
Registered: 27/08/08
Posts: 1893
Loc: Powick
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Been running fine all weekend. Fitted a new fuel filter and popped out one of the idle jets (the one on the opposite side to the engine) and gave it a blow through - it's a 55. Will get a spare for emergency roadside swapouts.
Checked the history that came with the car, and she had a full fuel tank clean by Allon White about 8 years ago, so I imagine it's just a bit of surface rust (hence small particles that are clearing themselves). It all depends if she's been kept with a full tank of fuel or not. It might explain why she plays up with a full tank - slight corrosion on the upper surfaces which gets dislodged when full. A small gas lighter refill cannister is really handy for blowing through jets.
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1972 4/4 2 Seater
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#555296 - 22/01/19 09:02 AM
Re: Won't idle.....
[Re: TBM]
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Talk Morgan Regular
Registered: 19/11/15
Posts: 648
Loc: Yorkshire
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tmg, good tip that !
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Jon M
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#555449 - 23/01/19 08:23 AM
Re: Won't idle.....
[Re: TBM]
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Just Getting Started
Registered: 20/08/17
Posts: 43
Loc: Staffordshire UK
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I had similar issues with a 1986 4 seater which had a mechanical fuel pump. I had already checked it was pumping fuel ok by turning the engine over with the fuel line in a jar. Eventually, a friend who was a professional mechanic told me that mechanical fuel pumps can work intermittently when they are on the way out rather than packing up altogether. The flap valves jam or leak. I changed the fuel pump, problem sorted!
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Calypso Red 1994 +8 BMW Calypso Red. 2002 4/4 4 seater BMW Calypso Red.
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#555450 - 23/01/19 08:28 AM
Re: Won't idle.....
[Re: Calypso Red]
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Learner Plates Off!
Registered: 06/11/18
Posts: 278
Loc: Northants, UK
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I had similar issues with a 1986 4 seater which had a mechanical fuel pump. I had already checked it was pumping fuel ok by turning the engine over with the fuel line in a jar. Eventually, a friend who was a professional mechanic told me that mechanical fuel pumps can work intermittently when they are on the way out rather than packing up altogether. The flap valves jam or leak. I changed the fuel pump, problem sorted! It had a new fuel pump fitted by AW in June last year - however, I have had problems with mechanical fuel pumps in my Land Rovers caused by wear on the camshaft. Had to resort to electrical in the end.
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1972 4/4 4 seater Too many ratty motorbikes
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#558746 - 09/02/19 10:40 AM
Re: Won't idle.....
[Re: TBM]
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Learner Plates Off!
Registered: 06/11/18
Posts: 278
Loc: Northants, UK
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SUCCESS! Finally, all the ducks lined up Once I got her started this morning (took a while, but she had been sat for three weeks) and idled OK. Half way to breakfast she started playing up again and still playing up when I got home. Whipped the idle jet out, gave her a spray of carb cleaner and she started up perfectly and idled beautifully! Thanks for all the help and advice, it's been much appreciated. Hopefully in time, all the rubbish in the tank will work its way through, and in the meantime, I can fix it in minutes. 
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1972 4/4 4 seater Too many ratty motorbikes
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#558791 - 09/02/19 01:14 PM
Re: Won't idle.....
[Re: TBM]
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Talk Morgan Expert
Registered: 20/08/10
Posts: 2210
Loc: Costock, South Nottinghamshire...
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SUCCESS! Finally, all the ducks lined up Once I got her started this morning (took a while, but she had been sat for three weeks) and idled OK. Half way to breakfast she started playing up again and still playing up when I got home. Whipped the idle jet out, gave her a spray of carb cleaner and she started up perfectly and idled beautifully! Thanks for all the help and advice, it's been much appreciated. Hopefully in time, all the rubbish in the tank will work its way through, and in the meantime, I can fix it in minutes. That is great news. Sounds like the long term fix is to put lots of miles on her. Win Win.
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Paul Costock, UK 2014 4/4 Rolls Royce Garnet Red Disco 4 Teddy - 17h1 Irish Draught cross
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#558810 - 09/02/19 02:36 PM
Re: Won't idle.....
[Re: TBM]
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Member of the Inner Circle
Registered: 15/12/09
Posts: 18877
Loc: Devonshire
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Great news TBM your perseverance has paid off - shouldn't be too long before all the bits get flushed.
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Richard 1999 Indigo +8
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