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Properly checking fuel system pressure and pump performance. Presents the procedure for checking and standards for pump performance.
Characteristic causes and malfunctions of the Porsche Cayenne and VW Touareg fuel pumps [gas pumps]:
left fuel pump malfunction;
Failure of both fuel pumps;
engine stalls after 30 seconds after start-up;
unstable engine rpm at idle;
relays 404 are out of order;
fuel filter is clogged;
no traction;
malfunction of hose connections;
malfunction of electrical wiring (connectors).