I own 2 1996 Jaguar XJ6’s…love the cars -pretty classic! One, we’ve been told needs a new engine at 126,000 miles…I’m skeptical ~ if anyone wants to advise…feel free to message I’ll send mechanic report. It’s in SLC with my daughter -she was driving it…my other one has 228,000 miles and engine is fine…thanks!!

 

An AJ16 engine died at 126,000 miles? Did someone drive the last 6,000 miles without any oil in it.

I don't believe it.

 

X300 compression test as a spinning starter is a Doc I once saw , but saved on old broke computer

Unless the mechanic can show how things mechanically failed

Engine placed in a bore wash condition ( easy to do and engine will not start ) as this will fail compression test , there are 2 easy and cheap ways to correct and carry on forward

Hold gas pedal to floor and crank , this will cut off fuel by ECU seeing this / design and reestablish piston rings seal from oil on the bottom side of piston

Or remove plugs and place a bit of Marvel Mystery Oil on top of pistons , rotate crankshaft without starting to distribute oil along cylinder ( can be done by removing fuel pump relay or fuse in trunk ) , let soak overnight then put back together and start normally ( holding gas pedal to floor or goosing will not aid but counterproductive because ........... )

This 2nd method on light off will smoke , smoke a lot but the smell of victory , no more mosquitoes in Utah

 

You can send mechanics report to me at the messages link on this website

Up to you if you want this report posted on the website

Just hit the Parker 7 icon and there will be a send message link as you can upload certain and sized files

Little detail , there is a rattling of the timing chain ( very robust to not need replacing ) resolved by a TSB of an upgraded timing chain tensioner with a large arrow cast into it
, may see a comparison ( does have arrow ) on yours if a later X300

The engine by design starts on the camshaft position sensor and switches over to the crankshaft position sensor after a point , the engine will start with the CMPS connector off but requires more engine rotations vs. instantaneously , There is a adjustment on the CMPS but not on the CKPS which the CMPS may have been put out of true

There are a couple of relays to place finger on to feel for click and not rely on sound

Right engine bay fuse box small relay # 9 in corner , powers engine ECU as 1st power

ECU controlled relay as large # 5 right that is controlled by the ECU and brings high current power back into ECU . power for fuel injectors and 1 / 2 the engine regulation sensors

Right Heelboard small relay in the corner of fuse box , this must close to power secret fuse for the fuel pump control fuse # 10

 

Once in Engineering School the small old school gas station with oil changing lifts showed me a student's Mercedes Benz that had no oil in it