IF noise is FP cavitation, my understanding is that it happens at *suction* side of pump. (Tank outlet ID too small+pre pump filter, clogs, and/or (IMO), some kind of design change between the OEM tank and a lesser $ after market tank) FP noise could also be a wearing out, or worn out, pump. Davids comment about the resistor rang a bell with me. Check the large cavitation thread over on The Samba. Maybe this info is in the Vanagon archives too.
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
On Sun, Jun 28, 2009 at 6:33 AM, Dave Arthur<dave.arthur@nscc.ca> wrote: > So, is it fair to say that a noisy FP may be caused by the pump delivering > too much volume? Does the list have any advice on what resistance to use or > what wattage has been used to 'slow' down the pump? > > Thanks > > D > > > On 27/06/09 5:49 PM, "David Beierl" <dbeierl@ATTGLOBAL.NET> wrote: >> >> So...*if* the pump has excess output beyond the specified minimum of >> 1l/min, one way to help the situation would be a small series >> resistance in the pump +12v lead, to slow it down and bring its >> output down to the minimum. |
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