Jaguars have plug seals.

Plas Mynach was created in 1883.

I have a 2000 XJ8, VP; twice this has happened; sounded like it had jumped timing; Found out that most Jags built during the Ford era, w/V8 engines have this problem often. Clean your throttle body of sutt build up as well as your spark plugs. May want to replace crank sensor as well. Worked for me. Sir "J"

you must remove the underlining batwing flap,you may need a special oil filter wrench because the oil filter is place horizontal between the oil pan and racket pin.gear,so its kinda tight.Once you remove the cover under the engine which requires 1 large flathead screw driver for the 3 screws in the front,and 1 deep 10mm for the rest.You will need a 13mm to remove the drain plug.Make sure to use 5w30 full synthetic or you may have some lifter knock from sticking with conventional oil.

Yes, Module Master in Moscow ID. can fix it for $65 plus $15 shipping. 5 years warranty http://www.modulemaster.com I send mine after searching for long time.

First check your turn signal switch

there isn't one. It comes with a lifetime sealed transmission.

For the front doors, remove the inner door skins (grab the bottom and pull gently.) You can probably get away with just pulling the bottom loose enough to reach the screws around the speaker box. There are 3 or 4 screws holding the speaker box in. Remove the screws and unhook the old speaker. Pull the box out from under the door skin. There are 4 nuts holding the speaker to the inside of the box. Remove those (it's tight so you may want to use a needle nose pliers.) and the speaker is free. The rear speakers are a little easier. The box is contained in the armrest. This is held on by a couple of screws on the bottom. Remove these screws and lift the arm rest free. The speaker is contained in a box similar to the front.

I HAD THE SAME PROBLEM ON MY 1994 VANDEM plas. It was my altenator belt was not tight enough to maintain a full charge. It took me two years to find the problem.

It can also be the battery has a dead cell which will drain it overnight. Can also be some light is staying on and pulling power from the battery. Also a stuck relay will drain the battery. Loose or corroded connections is another possibility.

Jaguars are some of the least reliable cars ever made. They may be pretty, and have nice features, but they break often and are very expensive to repair. Oddly enough, when shopping for a used Jaguar, you are better off buying one that shows normal or even high mileage for it's age, rather than one that has very low mileage for it's age. The low milage cars are often that way because they just won't stay running long enough to put on any miles. The mid 80's cars you mention are among the very worst for reliablility of any Jag model. Look outside any Jag repair shop and you are bound to see some mid 80's Vanden Plas cars covered in dust and abandoned over expensive repair bills. A used Mercedes or BMW is just as elegant, and both are far more reliable to drive and maintain. I've had both.