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BarryL Samba Member
Joined: November 01, 2004 Posts: 14221 Location: Casa de Oro, California
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Posted: Wed Aug 13, 2014 7:00 pm Post subject: |
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A tiny piece of rubber calved off the hose? Sometimes when hose is first pushed on any fitting a tiny chaff-shave bit will get inside. |
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Fredrok Samba Member
Joined: July 06, 2014 Posts: 227 Location: Under the evergreens. CO
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Posted: Wed Aug 13, 2014 8:15 pm Post subject: |
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Thanks Barry, I considered some form of debris as a possibility and removed the barbs to inspect at the time. I was unable to see anything however, after sitting on my bench for a few hours, it now works much better (but not like it did new). I'm thinking a thermal issue now. |
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BarryL Samba Member
Joined: November 01, 2004 Posts: 14221 Location: Casa de Oro, California
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Posted: Thu Aug 14, 2014 7:35 am Post subject: |
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Fredrok wrote: |
I'm thinking a thermal issue now. |
Without rereading all the past discussion on the valve, is it rated for continuous duty? |
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Fredrok Samba Member
Joined: July 06, 2014 Posts: 227 Location: Under the evergreens. CO
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kreemoweet Samba Member
Joined: March 13, 2008 Posts: 3889 Location: Seattle, WA
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Posted: Fri Aug 15, 2014 10:21 am Post subject: |
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Needle valves, such as the ones in the carb, are really not to be thought of as shutoff valves, they are mainly
flow regulating devices. That's why, at least since the early '60's, VW either incorporated a cutoff valve in
the fuel pumps or used a separate external cutoff valve. Tank pressure does not affect the operation of
those cutoffs. It seems you either don't have one (many aftermarket pumps are lacking this feature) or the one
in your pump is defective. There are "rebuild kits" available for some early VW/Pierburg fuel pumps, but the
quality is unfortunately very questionable. _________________ '67 bug: seized by the authorities
'68 bug: seized by the authorities
'71 kombi: not yet seized by the authorities
Stop dead photo links! Post your photos to The Samba Gallery! |
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Fredrok Samba Member
Joined: July 06, 2014 Posts: 227 Location: Under the evergreens. CO
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Posted: Fri Aug 15, 2014 11:17 am Post subject: |
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Thank you for the suggestion. Here's the pump, looks like a cleaned up original?
I see WW offers a rebuild kit for $30, however my question would be if that was the cause, why not all the time instead of just full? Thank you! |
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mandraks Samba Member
Joined: November 28, 2004 Posts: 7045 Location: Lawrenceville, Ga
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Posted: Fri Aug 15, 2014 11:52 am Post subject: |
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well it looks like a brosal pump without a hose clamp on it. _________________ regards
Uli
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'53 3-Fold Oval, L35 Metallic Blue, looking for a narrow hatch panel |
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Fredrok Samba Member
Joined: July 06, 2014 Posts: 227 Location: Under the evergreens. CO
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Posted: Fri Aug 15, 2014 12:26 pm Post subject: |
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Cute. That's because I took it off to pry the hose off on the side of the road to troubleshoot before scorching on asphalt and bathing in fuel, thus leaving it off and in pieces once I got it home to investigate (see earlier posting).
So, would the Brosol (as stamped on the side) be an original?
I'm learning VWs are A LOT like Jeeps. Better be mechanically adept and carry AAA for the back up.
Last edited by Fredrok on Fri Aug 15, 2014 12:30 pm; edited 1 time in total |
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mandraks Samba Member
Joined: November 28, 2004 Posts: 7045 Location: Lawrenceville, Ga
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Posted: Fri Aug 15, 2014 12:28 pm Post subject: |
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mine were all Pierburg ones. I think the other ones are newer replacements _________________ regards
Uli
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'53 3-Fold Oval, L35 Metallic Blue, looking for a narrow hatch panel |
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Fredrok Samba Member
Joined: July 06, 2014 Posts: 227 Location: Under the evergreens. CO
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Posted: Fri Aug 15, 2014 12:33 pm Post subject: |
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Thanks, I'll start yet another search to see what the TS collective deems trustworthy pumps! |
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BarryL Samba Member
Joined: November 01, 2004 Posts: 14221 Location: Casa de Oro, California
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Posted: Fri Aug 15, 2014 2:54 pm Post subject: |
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kreemoweet wrote: |
... since the early '60's, VW either incorporated a cutoff valve in the fuel pumps or used a separate external cutoff valve.. |
Do you have any pictures or links to these valves? |
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kreemoweet Samba Member
Joined: March 13, 2008 Posts: 3889 Location: Seattle, WA
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Posted: Fri Aug 15, 2014 3:43 pm Post subject: |
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BarryL wrote: |
Do you have any pictures or links to these valves? |
The Bentley and Haynes manuals have photos and diagrams of them.
From thesamba gallery, an external cutoff valve:
According to the Haynes manuals, the pumps like the OP's with the inscription "PE 20000" have internal cutoff valves, but the earlier ones with
"VW, 15" do not. That's talking about VW pumps (with VW logo, etc), I don't know whether that would apply to similar-looking Brosol pumps. _________________ '67 bug: seized by the authorities
'68 bug: seized by the authorities
'71 kombi: not yet seized by the authorities
Stop dead photo links! Post your photos to The Samba Gallery! |
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Fredrok Samba Member
Joined: July 06, 2014 Posts: 227 Location: Under the evergreens. CO
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Posted: Sat Aug 16, 2014 8:14 am Post subject: |
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Good stuff, thanks. The confusion on what I should have stock continues. |
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