My 92 xj6 gas cap will not seal tight. i got another cap from the junk yard and it wont either im starting to think the problem is with the tank. What would cause two gas caps not to seal when u screw it? it feels like its not even catching when it screw to close. i also recently replaced the fuel pump and now the gas needle does not register

SOURCE: 92 XJ6 Fuel pump/filter

hi sometimes on most cars if lift up the back seat ther usually the pump unit on the top of the tank with two pipes coming out of it .if ypu can find the relay for the fuel pump connect the terminals 30 to 87 together you should hear the fuel pump run.alternitavely check the power to the fuel pump with a multimeter you should get 12 volt when trying to start also check for broken wirig to pump.

John Quinn

• 286 Answers
• Posted on Feb 05, 2009

SOURCE: answer this quertion

Hi

I believe you mean the locking ring, which secures the Fuel Tank Guage Sender / Fuel Pump into the tank.

Let me know if we are on the same wave length ?

Please give me a FixYa Rating please, i´m almost a Guru !

John.

SOURCE: location of fuel tank and fuel pump on jaguar xj6

what year car is it fuel tank is located behind rear seat early xj 40 fuel pumps are under car near drivers rear door later ones pump in tank

SOURCE: speedometer sticking

It could be a bad sensor or bad instrument cluster or wiring?? Hard to tell without more information

SOURCE: 1986 Jaguar XJ6 Won't start.

if your fuel pump and relay are new, how about your fuel filter, if your fuel pump is working but no fuel turns out, check fuel pump polarity, if ok, there will be a clogging in fuel lines, take a high pressure air and plug it to fuel outlet in fuel lines test port, allow air to go back up to fuel tank and observe if the air goes, if not, check or change fuel line, if the air goes to tank, direct your fuel relay pin 30 and 87 and check if the fuel runs to the injectors, if not, change a good fuel pump