I’m new to this forum as I’m considering buying my first Jag.
The car that I’m considering is a 1991 XJS V12. (US model with cats).
Overall the car is in pretty good shape with some expected issues that I could address over time.
My main hesitancy is the dreaded Marelli ignition. I’ve read at length (on this forum and others) about the failures and potential for catastrophic fires. I’ve read the info in Kirby’s book about potential fixes. Much of the info and advice is from over 10 years ago and I was interested in how successful these fixes have been and advice on moving forward with this car.
Also, it appears that some experts (notably the folks at AJ6 Engineering) remain unconvinced that this a serious or prevalent issue.
Assuming that the car I am considering has 65K miles and still has the original Marelli cap and rotor, please choose one of the following recommendations:
A) inspect cap and rotor: if all looks good, do “silicone squirt” for existing rotor and keep original cap. Continue regular inspections.
B) replace cap and rotor with aftermarket replacements every couple of years; do silicone squirt each time- I assume that it is impossible to buy bonafide Marelli replacements anymore. Any advice as to where to buy quality aftermarket replacements appreciated.
C) replace distributor cap and rotor with Lucas while keeping the rest of the Marelli ignition system intact- I read about this in Kirby’s book. It sounds like a good solution but I’m unsure how complicated it is to do- I’m interested in hearing if people have actually done this and how it went.
D) stay away from Marelli, instead buy a pre-‘89 Jag which has the Lucas ignition system- I’m unclear what you lose in performance (if any) with this older system.