Jaguar xj6 series 3 changeover fuel problem

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Jan 21, 2015 | 09:19 PM

ahunt4

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Joined: Jan 2015

Posts: 180

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From: toledo

Jaguar xj6 series 3 changeover fuel problem

I noticed in my car one tank would become more full than how much gas I actually put into it when I switch tanks here and there. The question I have is where should I start and what all should I check to fix this problem. Also the things I would have to check, can you explain how to go about checking them and testing them? Thank you

Jan 21, 2015 | 10:58 PM

Doug

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Joined: Mar 2008

Posts: 25,535

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From: Pacific Northwest USA

This should help

Fuel Tank Switchover Checklist, Series III XJ6

Cheers
DD

Jan 22, 2015 | 08:27 PM

Lagonia

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Joined: Oct 2013

Posts: 1,048

Likes: 364

From: Austin, Texas

The fuel is returned to one of the tanks irrespective of which tank is selected. There are two change over valves: One for the fuel being sent to the engine and one of the returned fuel. Your return valve is stuck, inoperable or has some wiring problem forcing the returned fuel to go to one tank.

I had the same problem on my XJ12 and I ended up dumping a bunch of gas in a parking lot before I realized what was happening. This is so freaking dangerous, is not funny.