Date:         Sun, 2 Mar 2014 09:26:07 -0800
Reply-To:     Neil N <musomuso@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Neil N <musomuso@GMAIL.COM>
Subject:      Residual Fuel Pressure: hold for 1 hour?
Content-Type: text/plain; charset=UTF-8

Hi all.

So it seems that residual pressure is required to aid in hot starting.
(see below)

I haven't tested delivery rate, voltage and current draw at pump but
fuel pressure with engine running, and residual pressure engine off,
test ok; Bentley specifies 29 PSI after 10 minutes.

Should the fuel system hold pressure up to 1 hour or more?

Thanks,

Neil.


http://gerry.vanagon.com/cgi-bin/wa.exe?A2=ind0209D&L=vanagon&P=R17554

http://www.motor.com/article.asp?article_ID=667

"To prevent fuel percolation and aid hot- and cold-engine starting,
fuel injection systems must maintain residual, or "rest," pressure
when the engine is off. All systems lose residual pressure over time.
It's just a question of how fast and how much before it's a problem."

--
Neil n

Blog: tubaneil.blogspot.ca

'88 Westy http://tinyurl.com/c8rlw6p

'81 VanaJetta 2.0 "Jaco"  http://tubaneil.googlepages.com/

Vanagon VAG *Gas* inline-VR Engine Swap Group:

http://tinyurl.com/d7gd5ej