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6v Electric Fuel Pump
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herbie1200
Samba Member

Joined: April 27, 2006
Posts: 833
Location: Rome - Italy
herbie1200 is offline

Posted: Thu Jul 12, 2018 2:43 am Post subject: Re: 6v Electric Fuel Pump

Duuuuuuuuuude wrote:

So, to diagnose the problem, I temporarily replace the rear rubber fuel lines with Tygon fuel lines for small engines. I only did this as a test and have since installed proper fuel lines. The Tygon hose are clear/yellow so I could see where the air bubbles are coming from.

• No air bubbles coming from the front of the car through the chassis.
• No air bubbles appear after going through the firewall.
• In between the firewall and the fuel pump bubble appear in the middle of the fuel line as it passes over the heads and around the fan housing.

My conclusion is that the heat from either the heads or the engine block is heating up the line and boiling the fuel.

As I said in my OP, someone told me an electric fuel pump would correct this. I don't know if it's true or not but I'm willing to give it a shot. I $60 fuel pump is a cheaper option than a new engine.

Bingo! This is the experimental method that bring us to knowledge enlargement!

If you want to look at my solution with mechanical pump plus electric pump (for sporadic use only after long seat or big vapour lock):

https://www.thesamba.com/vw/forum/viewtopic.php?t=653604&highlight=

Duuuuuuuuuude
Samba Member

Joined: June 25, 2014
Posts: 43
Location: United States
Duuuuuuuuuude is offline

Posted: Thu Jul 12, 2018 1:39 pm Post subject: Re: 6v Electric Fuel Pump

herbie1200 wrote:

If you want to look at my solution with mechanical pump plus electric pump (for sporadic use only after long seat or big vapour lock):

https://www.thesamba.com/vw/forum/viewtopic.php?t=653604&highlight=

Wow! That's really cool.

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