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#555288 - 22/01/19 08:16 AM Re: Won't idle..... [Re: TBM]
tmg513 Offline
Talk Morgan Enthusiast

Registered: 27/08/08
Posts: 1950
Loc: Powick
Originally Posted By TBM
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.
_________________________
1972 4/4 2 Seater

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#555296 - 22/01/19 09:02 AM Re: Won't idle..... [Re: TBM]
CooperMan Online   content

Talk Morgan Regular

Registered: 19/11/15
Posts: 834
Loc: Yorkshire
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]
Calypso Red Offline
Just Getting Started

Registered: 20/08/17
Posts: 47
Loc: Staffordshire UK
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]
TBM Offline
Learner Plates Off!

Registered: 06/11/18
Posts: 430
Loc: Northants, UK
Originally Posted By Calypso Red
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.
_________________________
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]
TBM Offline
Learner Plates Off!

Registered: 06/11/18
Posts: 430
Loc: Northants, UK
SUCCESS!

Finally, all the ducks lined up smile

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. smile smile
_________________________
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]
Paul F Offline

Talk Morgan Expert

Registered: 20/08/10
Posts: 2285
Loc: Costock, South Nottinghamshire...
Originally Posted By TBM
SUCCESS!

Finally, all the ducks lined up smile

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. smile smile


That is great news. Sounds like the long term fix is to put lots of miles on her. Win Win.
_________________________
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]
+8Rich Offline

Member of the Inner Circle

Registered: 15/12/09
Posts: 19475
Loc: Devonshire
Great news TBM your perseverance has paid off - shouldn't be too long before all the bits get flushed.
_________________________
Richard
1999 Indigo +8






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#558824 - 09/02/19 03:36 PM Re: Won't idle..... [Re: TBM]
tmg513 Offline
Talk Morgan Enthusiast

Registered: 27/08/08
Posts: 1950
Loc: Powick
Originally Posted By TBM
Hopefully in time, all the rubbish in the tank will work its way through, and in the meantime, I can fix it in minutes. smile smile

That surely depends upon what the rubbish in the tank is. If it's rust unless you seal the tank the problem's going to keep recurring.
_________________________
1972 4/4 2 Seater

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