XJ XJ8 / XJR ( X308 ) 1997 - 2003

Cooked XJR

Old 12-30-2018, 06:50 PM
Junior Member
Thread Starter
Join Date: Dec 2018
Location: Bakersfield, CA
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
Default Cooked XJR

Hello everyone,

Iím new to the forum here and have just bought my first Jaguar, a 1999 XJR. Iíve read every last thread I could find on overheating and still have a few questions since my engine has definitely been cooked past the point most folks here have got to. The previous owner restored it perfectly, his wife was driving it on the freeway uphill for about 20 miles when the water pump belt broke, she kept on going til it quit on its own or because one of the little water lines melted and popped off the manifold and blew steam everywhere.

Now it wont start. Previous owner said it didnít have any compression. I figured before I started messing with too much stuff Iíd see if it would make any noise, would be happy with a pop or sputter, maybe even a puff of smoke.

I pulled the spark plugs, nice and clean. Dipstick is nice clean oil with no water. No leaks out the bottom, although I havenít put any water back in the radiator. I poured a bit of oil in the cylinders and it cranks over just fine, compression is definitely not there. Pulled one plug and coil pack and cranked over to check spark and it is sparking the plug. Sprayed some starting fluid in the throttle body and cranked, nothing at all.

Think there is more wrong other than the mechanical parts of the engine are junk?
I can buy another engine off eBay and swap it out but donít want to get into too many annoying electrical or computer issues. Would the later model block and heads with iron cylinder liners be a direct swap over? I read that they switched a few model years later.
Old 12-30-2018, 07:12 PM
Veteran Member
Join Date: Dec 2010
Location: Douglasville Ga.
Posts: 7,634
Received 2,106 Likes on 1,801 Posts

Your engine has nikasil liners, which are great unless the engine is severely overheated, destroying the liners. It's also possible to drop the valve seats under those conditions. It may be worth the time to remove the heads and check, but I suspect the engine is a loss.
Related Topics
Thread Starter
Last Post
X-Type ( X400 )
01-26-2018 03:27 PM
Dan Boyle
S-Type / S type R Supercharged V8 ( X200 )
06-09-2013 09:37 PM
XJ XJ6 / XJ8 / XJR ( X350 & X358 )
04-04-2010 06:53 AM
XJ XJ6 / XJ8 / XJR ( X350 & X358 )
08-11-2009 02:38 PM
XJ XJ6 / XJ8 / XJR ( X350 & X358 )
02-18-2009 06:20 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Thread Tools
Search this Thread
Quick Reply: Cooked XJR

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
  • Ask a Question
    Get answers from community experts
Question Title:
Your question will be posted in: