Has bad gas in it
Disconnect the fuel line from the filter( replace the fuel filter), add some hose to it to reach a bucket. Find the wires for the fuel pump. Jump them with a 12 volt battery and pump it out. After that I would put in 2 bottles of injector cleaner and 5 gallons of fuel. Run that for a awhile. Then 2 more cleaners and fill it up.
The best way is to take the tank out completely to clean , as you have to make sure that it is 100% clean so that the problem is solved completely.
If not cleaned properly it will make you a lot of problems
SOURCE: 95 Jag XJ6 wont start
just one other thing if the plugs are dry the injectors may not be working this might be the crankshaft sensor not to expencive and easy to change
SOURCE: IDLE SPEED CONTROL VALVE IN JAG XJ6
Hi the idler valve has a set up with jag equpment but there is a way round this,ifyou have had O2 sensors changed, is the idler working what are the revs when hot. 650 is to low 850 is ok with a hot engine Mike do you know where the idle valve is and the allen key manual adjustment try a quarter turn but mark it so you can turn it back if need be. let me know how it goes D
SOURCE: 87 jag xj6. Brake pedal spongy goes all the way
If the brake lines and fluid is clear then you may have to look at the brake booster found at the other end of the brake pedal under the hood...
SOURCE: 86' Jag XJ6 won't start without starting fluid.
look under bottom panel for cut off switch or in glove box.back in the 80's expensive cars owners installed switches to help combat thief
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