1999 Jaguar XK8 Won't start, no diagnostics showing

1999 JAGUAR XK8
88,000 MILES • V8 • 2WD • AUTOMATIC
Avatar
DPROCTER
  • MEMBER
  • 1 POST
I have had no problems at all, parked it, then an hour later it would not start or even turn over. I have checked the fuses, replaced the battery, kept battery disconnected for 30 minutes, swapped out the starter relay, tried to start it in neutral.... nothing? lights, radio etc all work, but engine will not start? HELP

Thanks
Nov 10, 2010 at 2:52 PM
Avatar
KASEKENNY
  • ✓Experienced Mechanic
  • 18,907 POSTS
Just to confirm the engine is cranking but not starting. It sounds like this is the case, so we need to find out the three basic things we need to check.

First is fuel pressure, then ignition, and finally compression. You need air as well, but we can get to that if these other three check out.

Here are some guides that will need in order to figure this out.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

https://www.2carpros.com/articles/how-to-test-engine-compression

Once we know these items we can go from there. However, we will want to pull a spark plug and hold it against the block and see if there is spark.

Lastly, is the theft light remaining on when you are trying to start the engine?

https://www.2carpros.com/articles/how-to-reset-a-security-system

Please run through all this info and let me know what you find.

Thanks
Jan 8, 2022 at 1:46 AM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle