On Mon, May 11, 2009 at 5:54 PM, Dave Arthur <dave.arthur@nscc.ca> wrote:
> > I replaced the relay and connected the pump up properly and all was well, > until I checked the fuel pressure. As soon as the pump stopped the fuel > pressure bled down rapidly to zero (~2-3 sec). The manual expects at least > 29 psi after ten minutes! > > I pinched off the fuel return line and individual injectors to test for leak > down issues and concluded that the pump itself was not holding the pressure > when it stopped. > > So the engine runs, but starts hard, with the pump running all the time as > before, the engine started immediately. >
Did you check the fuel regulator? If it had a faulty diaphragm, fuel might leak past into vacuum line causing the pressure drop. Of course having fuel leaking past it into the vacuum line is not a good thing either! :) Neil.
-- Neil Nicholson '81 VanaJetta 2.0 "Jaco" http://tubaneil.googlepages.com/ http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engines |
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