1999 Jaguar XJ8 Won's Start

1999 JAGUAR XJ8
80,000 MILES • V8 • 2WD • AUTOMATIC
Avatar
MARYSJAG
  • MEMBER
  • 1 POST
Jag was running just fine. Set over night and would not start mid day. Fired up for a few seconds then stalled. Would not re-start.

Spark checks out OK, fuel checks out OK.

Mechnics are stumped.

Happy to donate if I get any answers I can use. I have already paid but still waiting for answer.

Once when this happened I was told that if you put oil in the spark plug holes the Jag engine will rebuild compression and start. It worked before but I would like feed back on this.
Nov 23, 2009 at 9:23 AM
Avatar
DAVE H
  • ✓Experienced Mechanic
  • 13,383 POSTS
have you actually got no compression ? are there any fault codes stored in the PCM
Jan 4, 2010 at 9:50 PM
Avatar
HORTO02
  • MEMBER
  • 2 POSTS
I have exactly the same issue and have been told its low compression due to the piston rings wearing. This was from a Jag garage who said they could only replace the engine at over £7,000. They also said that I could just put foot on the accelerator when I turn the car over and it works.

It doesn't like cold starts but as the engine warms and metal expands issue goes away
Mar 9, 2010 at 9:58 PM
🔧 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