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MartinFidler918
Samba Member
Joined: April 15, 2021
Posts: 17
Location: United Kingdom
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 Posted: Mon May 10, 2021 3:34 am Post subject: 1968 Beetle Fuel Cut off Valve 6Volt |
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hi Everyone, I'm after another bit help!
As per the title I have a 1968 1200cc beetle which is 6 Volt.
I think I have a faulty fuel cut off valve as sometime fuel does not get through and the car wont start.
I'm after replacing this with a brass plug or something, can anyone advise what I can replace this with as finding a replacement for 6 Volt is impossible.
Cheers
Martin |
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bomberbob
Samba Member
Joined: May 17, 2015
Posts: 688
Location: Iowa
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| Posted: Mon May 10, 2021 4:54 am Post subject: Re: 1968 Beetle Fuel Cut off Valve 6Volt |
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Cut off valve on the carb? Does it make a clicking sound when you turn on the key? I guess you could just put a plug in there, but you may have issues with engine run-on then.
_________________
1968 Beetle (storage)
1990 Jetta GLI megasquirted, burning E85 (currently in heavy maintenance)
2004 Jetta turbo GLI
Marion, Iowa |
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MartinFidler918
Samba Member
Joined: April 15, 2021
Posts: 17
Location: United Kingdom
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| Posted: Mon May 10, 2021 6:05 am Post subject: Re: 1968 Beetle Fuel Cut off Valve 6Volt |
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Hi There Yes, the fuel cut off on the carb. It 'clicks' sometimes hence why I think it's on it's way out. Do you know what brass plug I could use?
Cheers
Martin |
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Ovally
Samba Member
Joined: June 14, 2014
Posts: 476
Location: Belgium
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| Posted: Mon May 10, 2021 7:29 am Post subject: Re: 1968 Beetle Fuel Cut off Valve 6Volt |
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| MartinFidler918 wrote: |
... I have a 1968 1200cc beetle which is 6 Volt.
...as finding a replacement for 6 Volt is impossible.
Cheers
Martin |
I suppose you need this one : VW part number 111 129 413A
6 Volt I think, but to be sure you can ask the seller.
https://www.thesamba.com/vw/classifieds/detail.php?id=2206461
Regards.
_________________
VW Bug Oval 1953
VW Bug 1200 D motor
Porsche 911S MFI 1970
Mazda 929 Hardtop 1977
Mercedes SLC 180 Roadster 2018 |
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diamondblue1969
Samba Member
Joined: February 19, 2010
Posts: 95
Location: ONTARIO
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MartinFidler918
Samba Member
Joined: April 15, 2021
Posts: 17
Location: United Kingdom
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| Posted: Wed May 12, 2021 2:11 am Post subject: Re: 1968 Beetle Fuel Cut off Valve 6Volt |
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Thanks guys. It's a good forum here. I think i'll cut the plunger end off to start with.
Many thanks. |
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viiking
Samba Member
Joined: May 10, 2013
Posts: 2668
Location: Sydney Australia
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| Posted: Wed May 12, 2021 4:22 am Post subject: Re: 1968 Beetle Fuel Cut off Valve 6Volt |
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My 68 1500 RHD doesn’t have a fuel cutoff as standard from the factory. Just leave it off.
I thought these fuel cutoffs were a US thing for emissions reductions so not relevant in most other jurisdictions.
_________________
1968 1500 RHD Lotus White Beetle since birth. In the hospital for major surgery
1966 Lancia Flavia Pininfarina Coupe - in the waiting room
Discharged: 1983 Vanagon, 1974 1800 Microbus,1968 Low Light,1968 Type 3 |
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ashman40
Samba Member
Joined: February 16, 2007
Posts: 15987
Location: North Florida, USA
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| Posted: Wed May 12, 2021 6:20 am Post subject: Re: 1968 Beetle Fuel Cut off Valve 6Volt |
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| viiking wrote: |
My 68 1500 RHD doesn’t have a fuel cutoff as standard from the factory. Just leave it off.
I thought these fuel cutoffs were a US thing for emissions reductions so not relevant in most other jurisdictions. |
Not an emission device, or not directly and emission device.
In the late '60s VW added the idle cutoff solenoid as a solution to prevent engine run-on when the ignition switch was turned OFF. Often bypassing the idle cutoff solenoid results in the engine continuing to run for a few seconds after the ignition is turned OFF.
At the instant you turn the key to OFF, the engine's momentum allows the engine to continue to rotate as it slows down. While the engine is still rotating the charging system is producing current. This current can still make it back into the ignition circuit (15) via the GEN lamp. You often see this as the GEN lamp turning ON the instant you turn the key OFF. This current thru the GEN lamp has the ability to power the ignition coil to keep it firing the spark plug weakly. So even though the ignition switch is OFF the ignition coil continues to weakly spark and ignite the compressed charge in the cylinders.
To prevent this from continuing, VW added the idle cutoff solenoid to immediately cutoff fuel to the idle circuit. No fuel means the cylinders will not ignite even if there is spark. Compressed air alone does not ignite.
_________________
AshMan40
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'67 Beetle #1 {project car that never made it to the road  }
'75 Beetle 1200LS (RHD Japan model) {junked due to frame rot}
'67 Beetle #2 {2019 project car - Wish me luck!} |
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viiking
Samba Member
Joined: May 10, 2013
Posts: 2668
Location: Sydney Australia
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| Posted: Wed May 12, 2021 3:57 pm Post subject: Re: 1968 Beetle Fuel Cut off Valve 6Volt |
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I understand what “dieseling” is and what it is caused by. I’ve never had it happen in my original 68 which was NOT fitted with the cut off as standard equipment. All I’m saying is remove it and see what happens.
_________________
1968 1500 RHD Lotus White Beetle since birth. In the hospital for major surgery
1966 Lancia Flavia Pininfarina Coupe - in the waiting room
Discharged: 1983 Vanagon, 1974 1800 Microbus,1968 Low Light,1968 Type 3 |
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MartinFidler918
Samba Member
Joined: April 15, 2021
Posts: 17
Location: United Kingdom
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| Posted: Thu May 13, 2021 12:56 am Post subject: Re: 1968 Beetle Fuel Cut off Valve 6Volt |
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Cheers guys, don't fight  |
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GArBa
Samba Member
Joined: January 27, 2014
Posts: 2105
Location: Milano, Italy
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| Posted: Thu May 13, 2021 2:36 am Post subject: Re: 1968 Beetle Fuel Cut off Valve 6Volt |
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you can buy a new one from aliexpress for a few bucks (they are used on repro carbs), even if it ends up being c**p it's worth trying IMHO.
_________________
cars:
'97 type 1 1600i
'14 type AA Seat Mii (sadly dead after 270.000 km)
'22 type C1 T-Cross
'23 type AC3 Hyundai I10 (VW no longer makes small cars!)
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moped:
'82 Benelli Magnum 3v |
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Dan the workingstiff
Samba Member
Joined: July 03, 2006
Posts: 824
Location: Downriver, MI
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| Posted: Thu May 13, 2021 3:12 am Post subject: Re: 1968 Beetle Fuel Cut off Valve 6Volt |
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When the car doesn't start as per usual, pull it off and see if the that remedies the situation.
_________________
'69 Beetle
'66 FG buggy
My other air-cooled's
'76 IH 1200
'75 IH 1200 |
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viiking
Samba Member
Joined: May 10, 2013
Posts: 2668
Location: Sydney Australia
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| Posted: Thu May 13, 2021 4:21 am Post subject: Re: 1968 Beetle Fuel Cut off Valve 6Volt |
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| MartinFidler918 wrote: |
| Cheers guys, don't fight |
I'm not fighting!
_________________
1968 1500 RHD Lotus White Beetle since birth. In the hospital for major surgery
1966 Lancia Flavia Pininfarina Coupe - in the waiting room
Discharged: 1983 Vanagon, 1974 1800 Microbus,1968 Low Light,1968 Type 3 |
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ashman40
Samba Member
Joined: February 16, 2007
Posts: 15987
Location: North Florida, USA
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| Posted: Thu May 13, 2021 5:17 am Post subject: Re: 1968 Beetle Fuel Cut off Valve 6Volt |
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| Dan the workingstiff wrote: |
| When the car doesn't start as per usual, pull it off and see if the that remedies the situation. |
Not as simple as this.
Disconnecting the power from the solenoid will stop fuel flow thru/past it which means no fuel for the idle circuit.
Removing the solenoid and leaving the hole open creates a vacuum leak.
The common work around is to clip the end of the plunger off so the solenoid always allows fuel to flow. But this is a permanent change and cannot be un-done.
The less used option is to remove the solenoid and find a plug with the same sized threads. Since this is less used I've never heard of anyone posting the size of the threaded plug needed. I suppose you could take the solenoid out and take it with you to the hardware store and try different sized nuts and see which one threads onto the solenoid. Then purchase a plug with the same size thread. You will want to make use of a washer or o-ring to seal the plug so no fuel leaks out. Maybe Teflon/plumber's tape could work to seal the threads.
_________________
AshMan40
---------------------------
'67 Beetle #1 {project car that never made it to the road }
'75 Beetle 1200LS (RHD Japan model) {junked due to frame rot}
'67 Beetle #2 {2019 project car - Wish me luck!} |
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Ovally
Samba Member
Joined: June 14, 2014
Posts: 476
Location: Belgium
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| Posted: Thu May 13, 2021 5:44 am Post subject: Re: 1968 Beetle Fuel Cut off Valve 6Volt |
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Why make it difficult when it can be easy.
The idle cut-off valve in the link I gave is indeed a 6 Volt type and available.
Part number 111 129 413A (g 55)
Regards.
_________________
VW Bug Oval 1953
VW Bug 1200 D motor
Porsche 911S MFI 1970
Mazda 929 Hardtop 1977
Mercedes SLC 180 Roadster 2018 |
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diamondblue1969
Samba Member
Joined: February 19, 2010
Posts: 95
Location: ONTARIO
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| Posted: Thu May 13, 2021 6:58 am Post subject: Re: 1968 Beetle Fuel Cut off Valve 6Volt |
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Maybe you could install the threaded portion of the solenoid with the open
end sealed with a dab of silicone ! |
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