Question about 1998 Jaguar XJ8L

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My 1998 xj8 seems to drain the fuel line back to the tank over night and needs a couple of start ups to stay running. Is there a check valve in the fuel line that may be faulty? Bob Timoffee

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In most car this age there is a fuel pressure valve on the fuel pump itself. The pressure valve is also most the time your fuel filter and it only allows the fuel to run one way. My guess would be that valve is stuck in the open position and allows the fuel to run back into the tank. It is most likely to be located on top of the tank mounted right on the fuel pump on the outside of the tank.

Posted on Nov 14, 2010

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