Pulled 6 plugs today, 4 from right bank look dark and damp, 2 from left bank are white and dry. Tested the front coil and primary was 0.8 ohms and secondary was 5000 ohms. Which bank does the front coil fire? Will be pulling capstand tomorrow and finishing the last 6 before I start rerouting the mess of plug wires. hoping to have it running again by Friday evening. Found out that last person messing with the compressor left one of the front bolts off so I'll be swinging by fastenal tmrw to grab some.

 

A bank (RH) coil is lower coil/ red identifier. B bank is upper coil/ yellow identifier.

 

removed capstand and rear coil, finished replacing the plugs but all 6 from the right side looked damp and all 6 on the left look close to normal so im thinking I might have a firing issue with the right side. also looked at both coils and the rear coil that sits near the throttle is a champion, where the front one is still an original marelli. Are these coils known to make it this long? the car has 100k on it and both coils test 0.8 ohms primary and 5000 ohms secondary which seems to be in range but I am testing them cold. Also went ahead and cut off the cracked fuel lines that bridge the fuel rail, will be replacing those after all the plug wires go back in. I have a dead oil pressure gauge so was tempted to change the sending unit while I have good access to it but I hate spending money on something thats as useless as a gauge that does not really read. Has anyone found a cheaper sending unit that still allows the gauge to read?

 

As said, the coils are generic. I'd just replace them. I personally normally replace my coils (on cars with 1-4) every 80k km. The V8 has the first ones from 1997 still as they don't die. The Marelli coils are readily available (cost something like $25/piece).

 

My car has 270k on it and is still on original coils.

Coil ohms is not a good test, it will only tell you if the coils are open circuit or completely short.

To test primary disconnect the negative lead turn ignition on and you should measure 12 volts from negative coil terminal to ground.

 

With one modification BIM124 can work, but it won't work out of the box, because BKL3B has it's spark trigger on pin 6, and BIM124 is triggered on pin 5. The Jag connector has to be modified:

https://www.jaguarforums.com/forum/x...0/#post2202846