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#553463 - 12/01/19 04:28 PM Re: Won't idle..... [Re: britmog]
TBM Offline
Learner Plates Off!

Registered: 06/11/18
Posts: 331
Loc: Northants, UK
Originally Posted By britmog
Rule number 1:

Never fill the fuel tank beyond the first shut off of the fuel pump on any vehicle of any age.

Such a common mistake to get an extra half gallon into the tank.


Can I ask why?

I always brim my bike tanks and usually the cars. In fact, with the Morgan, if I rely on auto shut off I tend to get a blow back with chucks petrol over the back of the car.
_________________________
1972 4/4 4 seater
Too many ratty motorbikes

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#553483 - 12/01/19 07:22 PM Re: Won't idle..... [Re: TBM]
britmog Offline
L - Learner Plates On

Registered: 13/12/17
Posts: 139
Loc: Colorado, USA
Can restrict expansion in the fuel tank, also can cause issues with the vapor recovery system. Certainly the M3Ws do not like being filled to the brim, they stutter and stall for the first 5 to 10 miles. Its sort of the same principle as not letting it go below half full too often if it has an internal fuel pump.
_________________________
Bruce Marshall
1964 4/4 Series V Comp (Megan)
1994 +8 (Maurice)
2013 M3W (Olga)

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#553489 - 12/01/19 07:49 PM Re: Won't idle..... [Re: britmog]
TBM Offline
Learner Plates Off!

Registered: 06/11/18
Posts: 331
Loc: Northants, UK
Originally Posted By britmog
Can restrict expansion in the fuel tank, also can cause issues with the vapor recovery system. Certainly the M3Ws do not like being filled to the brim, they stutter and stall for the first 5 to 10 miles. Its sort of the same principle as not letting it go below half full too often if it has an internal fuel pump.


Don't think any of my vehicles have a vapour recovery system smile

The M3W sounds rather frustrating! If you can't fill the tank properly and only use half a tank, then you'd be spending more time in the petrol station than driving. Sounds like a bit of a design fault - my BMW K75 has an internal fuel pump and can fill it brim full and run till near empty with no issues - gives a useful 200 miles between fill ups.
_________________________
1972 4/4 4 seater
Too many ratty motorbikes

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#553620 - 13/01/19 04:02 PM Re: Won't idle..... [Re: TBM]
britmog Offline
L - Learner Plates On

Registered: 13/12/17
Posts: 139
Loc: Colorado, USA
Everyone to their own.
_________________________
Bruce Marshall
1964 4/4 Series V Comp (Megan)
1994 +8 (Maurice)
2013 M3W (Olga)

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#553633 - 13/01/19 04:44 PM Re: Won't idle..... [Re: TBM]
Gambalunga Online   content

Member of the Inner Circle

Registered: 03/09/11
Posts: 10950
Loc: Mandello del Lario, Lake Como,...
Originally Posted By TBM
Originally Posted By britmog
Rule number 1:

Never fill the fuel tank beyond the first shut off of the fuel pump on any vehicle of any age.

Such a common mistake to get an extra half gallon into the tank.


Can I ask why?

I always brim my bike tanks and usually the cars. In fact, with the Morgan, if I rely on auto shut off I tend to get a blow back with chucks petrol over the back of the car.

If you look down the filler of most modern bikes you will find a tube that extends part of the way in to the tank. This is specifically designed to leave some space above the "full" level and to discourage you from overfilling the tank. There is a small air bleeder hole in the top of said tube and if you slowly insisted I suppose you could fill the tank right up but normally the would be a litre or more of air space in the top of the tank. USA models have a breather tube that runs to a carbon canister but unless something is changed in the most recent Euro spec the EU models vent through the fuel cap. You get a nice vacuum build up in the tank if someone accidentally fits a USA spec fuel cap to an EU fuel tank smile Don't ask me how I know wink
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Peter


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#553646 - 13/01/19 05:31 PM Re: Won't idle..... [Re: Gambalunga]
TBM Offline
Learner Plates Off!

Registered: 06/11/18
Posts: 331
Loc: Northants, UK
Originally Posted By Gambalunga
If you look down the filler of most modern bikes


That'll be it. My 'youngest' bike is over 20yrs old smile
_________________________
1972 4/4 4 seater
Too many ratty motorbikes

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#553682 - 13/01/19 09:05 PM Re: Won't idle..... [Re: TBM]
sospan Offline
Talk Morgan Sage

Registered: 31/05/10
Posts: 6030
Loc: Llanelli
On my 2002 Plus8 I overfilled by going past the first pump cut off. This caused the ecu to detect a “evap cannister fault” that triggered the MIL light. I reset it with the Maxiscan and since then stopped adding fuel at the first pump cutoff. Fault has never returned. No actual engine problems, just the fault code registering.
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#553714 - 14/01/19 07:19 AM Re: Won't idle..... [Re: TBM]
TBM Offline
Learner Plates Off!

Registered: 06/11/18
Posts: 331
Loc: Northants, UK
Back to the drawing board.....

Started fine this morning, first 20 miles (mixture of fast road and 30mph stuff) all fine.

Got to MK and third roundabout in she stalled at idle and continued to do so at each one till I got to work (starts immediately after each stall). Removed the fuel cap when I got to work, started fine, but wouldn't idle. She will idle with about 1/3 choke.

Any thoughts? Done about 50 mile so far on this tank full.
_________________________
1972 4/4 4 seater
Too many ratty motorbikes

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#553716 - 14/01/19 07:25 AM Re: Won't idle..... [Re: TBM]
TBM Offline
Learner Plates Off!

Registered: 06/11/18
Posts: 331
Loc: Northants, UK
Didn't help my frustration that I also lost 'dip beam' half way to work! Hopefully just a lose connection somewhere. Side and Main are still ok so I don't think it's related to the problem above!
_________________________
1972 4/4 4 seater
Too many ratty motorbikes

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#553723 - 14/01/19 07:51 AM Re: Won't idle..... [Re: TBM]
TBM Offline
Learner Plates Off!

Registered: 06/11/18
Posts: 331
Loc: Northants, UK
Wonder if it's problems with the vacuum pipe?
_________________________
1972 4/4 4 seater
Too many ratty motorbikes

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