Jaguar XJ8 - Popular Questions, Answers, Tips & Manuals - Page 4

only when there is a problem as reported by the fault codes. With engines controlled by the ECM the voltages that are required to operate spark plugs is very high ( in excess of 60.000 volts) This in turn means that the current flow across the electrodes of the plugs is minimal and so the electrodes do not burn as they did in years gone by. There are manufacturers today that fit v6 engines in the engine bays where the rear 3 plugs cannot be easily reached and so they fit platinum plugs and recommend that they never be changed. It really is a preference thing but as the ECM continually tunes the engine (hundreds of times a minute) tune ups are basically a thing of the past and any problems will be recorded in the fault codes.

Same as any other Ford engine. Plugs every 50K to 60K.

The purge valve is not servicible replace and clear codes

This may help:

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I believe that this is to protect valuables left in the boot when parking the vehicle. I read here that there is access some where in/ near the glove box but I cannot remember exactly what it was . Surf the net under Jaguar valet problems and you may get the answer.

Raise the ride height? It looks like your front air shock absorbers have failed... of could be the air line manifold near the metal air storage tank.

If the key won;'t work, your only other solution is to remove the rear seats. You may be able to reach through the rear seat bulkhead and pull the release catch.

if the wires are on the right plug then you could have injector problems. when you changed the plugs did you gap the plugs to specs as if they aren`t then it can cause this problem. you could also have one or more bad ignition wires.

bolts, see them , just look , you will see em. i promise.

What are the torque specs for ? , I need more info to give you an answer. There are hundreds of torque answers for a car like the jaguar xj8 are we talking motor bolts or power torque ? The motor on a naturally aspirated is 290 ft.pds.

you may have a coolant leak from a bypass hose or pipe that runs over or to the intake manifold. pressure test the cooling sys and you will find the leak.

the radio may have been removed or lost power to the internal battery. you may need to contact Jaguar to get an unlock proceedure for it and possibly an unlock code as well.

I apologize, but I do not have an answer to this one. I would only be guessing. Brian

The coolant temp sensoris located in the cross pipe in the front of eng in the thermostat housing

Low fuel pressure

I would not use anything more than say 10psi of pressure. I doubt using air pressure will fix the clog if that is the problem, because the pump uses 10-20 psi in normal use. You may have to disconnect the nozzles and use a pin to clean out the ports or find the clog in the main line.

check relays usually under the hood on that model

Happens a lot. Always use the best high octane you can find. Check wire connections to knock sensor (most common cause for 'restricted performance light, sometimes outside temperature plays a part). Then disconnect negative terminal from battery, wait 2 minutes, reconnect. Then take car for a drive in various conditions, like city traffic, highway driving, and more. After several restarts, mine went away. Occasionally comes back, then disapiars. Ignore orange engine light.

First check to see if you have enough washer fluid in the reservoir. Then check to see if the rubber tubing is kinked or pinched when you close the hood. It is possible but not likely to be plugged up, except during the winter. The spray nozzles could be plugged up, because the opening is much smaller than the tubing. Even though the pump is operating, does not mean that it is actually pumping any fluid. The pump assembly is electrical and mechanical. The electric motor runs, but the pumping mechanism could be defective. If you use compressed air to clean out the rubber tubing, make sure the rubber hose is not connected up to the pump assembly. It might get damaged from too much pressure.