[Vwdiesel] More Quantum Questions?

[mark shepherd]

Bill,
You can stop using your mighty vac now.

The quote from below:
"Interesting note. I was able to pump fuel out the outlet side of the IP 
whether the ignition was off or on. Shouldn't the fuel stop solenoid prevent 
fuel flow if the ignition switch is off."

Note the solenoid ONLY stops fuel being supplied to that centre plug, which 
supplies the high pressure squirt to the injector lines. Removing power 
supply to solenoid and cranking engine will STILL pump diesel through pump 
and back to the tank. This is normal.

Questions:
1) Will fuel pass back towards tank if you crank engine? [just a couple of 
revs should do now].
2) If you have fuel coming out of that timing hole, then it should be pushed 
from there out of the lines. Disconnect lines again. Perhaps even totally 
remove them, and with a fully powered solenoid, crank a couple of turns and 
you should get fuel out of the lines or out of the pump outlets...

Report back ;o)

Mark


----- Original Message ----- 
From: "William J Toensing" <toensing at wildblue.net>
To: <vwdiesel at vwfans.com>
Sent: Wednesday, May 06, 2009 8:43 AM
Subject: [Vwdiesel] More Quantum Questions?


>
> Thank you Mark Shepherd & others for your replies. I have sorted out which 
> line goes where & Mark is correct. Followed thru per Mark's suggestion. 
> Removed the center plug where you screw in the dial indicator & did get 
> fuel. No one to watch but I put a paper shop towel which collected plenty 
> of fuel. Was able to pump more fuel out the outlet hose with my vacuum 
> pump. Replaced the center "breather" banjo with one that "breaths". Still 
> doesn't start. I am reluctant to run the starter more than 30 seconds 
> allowing at least a minute between attempts. I don't want to burn out the 
> starter. No starts, no "pops". Guess I will have to use the towing to 
> start method but will have to wait till Friday as I have meetings to 
> attend in Sacramento to attend on Wed. & Thurs. I wonder if an electric 
> fuel pump would help, mounted back by the fuel tank or in line between the 
> filter & the IP would help? I notice the "86 Jetta, which I have not had 
> time to trouble shoot yet, had an electric fuel p
> ump which comes on when the ignition is on.
> Interesting note. I was able to pump fuel out the outlet side of the IP 
> whether the ignition was off or on. Shouldn't the fuel stop solenoid 
> prevent fuel flow if the ignition switch is off. Or, would the 'breather" 
> banjo between the outlet & the aneroid allow me to suck fuel out of the 
> IP? Also, what voltage should be present at the fuel stop solenoid? I 
> would assume the same rating as at the battery, at least 12 volts. I do 
> have a new spare fuel shut off solenoid to install, if necessary.
> Bill Toensing, Nevada City, CA
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