Tools for Sale

Click to Browse Tools

Sales 800-524-9783

Mon-Fri. Sales 10am - 5pm Eastern Time or order on-line anytime.
Call with questions on application.

ATD Tools

Baum Tools

Calvan Tools

Rescue Bits

Time Sert

Win Tools

Thread Repair

Advice? 800-524-9783 x251

1999 4.0 Jaguar XJ8 No Start – Fuel Pump Location

12:33 pm Consumer, How To Auto Repair, Tech/Mechanic

1999 4.0 Jaguar XJ8

Summary: Jaguar XJ-8 no start problem. One of the most common causes of a no start condition in one of these Jags is a bad fuel pump. Where’s the fuel pump you ask? See the entire repair blog, included is a picture of the fuel tank. The pump is located inside.

One quick preliminary check is to spray a little starting fluid in the air intake hose and then crank the engine over. If the car momentarily starts then chances are good that the fuel pump is NOT working.  Another way to quickly check the fuel pump, is to have someone listen for the hum of the fuel pump in the trunk area when the key is first turned to the on position. The wiring can be back-probed to see if voltage is actually getting back to the pump as well. To check further a pressure gauge can be used to see if there’s sufficient fuel pressure. If the pump is working, there could be a different problem… like a bad crank or cam sensor. Use a code reader or scan tool to check for trouble codes – see if there’s anything the car’s computer has recorded as a possible problem. A stored code may not set for the fuel pump. Data can also be viewed to see if the cam and crank sensors are showing the expected revolutions during cranking.

Fuel pump on the 99 XJ8 is in the fuel pump.

Don’t be fooled into thinking this fuel pump is an easy one to change. It is located inside the gas tank in the trunk. The tank looks easy, but the fuel lines are really the sticking point. The lines enter the tank from a very small access hole above the rear differential (under the car). The metal lines have quick disconnects that must be removed prior to pulling the tank. Hard to see and harder to reach!

Please reference this auto repair article when quoting, linking to this page is welcomed and appreciated. If you are new to linking a page. 1. Left click the link; https://blog.denlorstools.com/2010/06/1999-4-0-jaguar-xj8-no-start-fuel-pump-location/#more-829 to highlight 2. Right click, select copy 3. Right click and paste to forum, blog web page etc. Thanks! Disclaimer: Auto repair information/tips are designed for informational purposes only, without warranty of any kind, in no event shall the author of this site be liable for any consequential, incidental or direct damages sustained in the course of using the information in this article.

2 Responses
  1. dave :

    Date: May 15, 2012 @ 12:04 pm

    I am going to remove my tank and replace the fuel pump in my 98 jag xj8. Are there any secrets I need to know before I start?

  2. dennisb - Auto Tool Sales :

    Date: May 15, 2012 @ 12:33 pm

    Dave, the fuel line needs to be released before removing the tank. Look up when the car is raised towards the rear of the car. This is VERY difficult to reach. If you cannot disconnect that line, do yourself a favor and consider paying someone else to change the pump. Good Luck.

Comment Below, Please Unlock Caps

Tell us your thoughts or ask a question. For best results please provide relevant details like your vehicle's year, make, model, engine size, the problem and when it occurs etc. - Comments need to be approved before they are seen by everyone. Notice we don't post Spam. Comment below (*SPAM, ALL CAPS & unrelated comments will be deleted). Click the following to view Dennis' "about page" for info on his background in automotive repair.

Please note: Your comment will not be posted until it's approved. We appreciate and read all on topic, relevant comments. Please don't ask for repair manual info like torque specs, wiring diagrams and specific repair procedures. If quick assistance is needed with purchasing a tool or part, please visit our tool website DenLorsTools.com or call to place an order at 800-524-9783. *Note we don't offer repair advice on the phone.