The largest and best supported Jaguar cars enthusiast site on the Internet!


Serving Enthusiasts since 1993
The Jag-lovers Web

Currently with 3,166 members





Jag-lovers' Ebooks
- Jag-Lovers' x300 Ebook -

2.5 - Exhaust Manifold ( Paul Stow,  December 1, 2001 )




cracked exhaust manifold

Undo the six bolts securing the heatshield and remove it. On US models, remove the EGR.

Inspect the manifold for cracks. These are usually obvious, and may also have caused a dark line of soot on the manifold and heat shield underside. They cause increased noise and can affect ECU inputs from the Oxy sensor in the downpipe. Use a dentists mirror or similar to check the underside of the manifold.

A reasonable cure may often be made with a wet solution of exhaust putty pushed into the cracks, or a heat resistant epoxy, but a long term fix requires welding or replacement. Specialist welding is required, as a simple furnace weld is likely to warp the manifold and cause more problems.

Undo the exhaust downpipe to manifold bolts and lower the exhaust. This will be much easier if the bolts have been soaked in penetrating oil for a few hours beforehand.

Undo the manifold nuts and gently rock the manifold to release it.

Clean the manifold and head surfaces thoroughly before replacing the manifold, and use a new gasket. Otherwise, refitting is the reversal of removal.

If removing the lambda sensors from the downpipes, take care to mark them and reinstall each in it's original location. If they are reversed, the ECU cannot understandwhat is happening in the engine and will set a check engine error code.


 

sepbar.jpg (3094 bytes)

This section currently maintained by Pascal Gademer; questions, comments, submissions and suggestions, email pascal@jag-lovers.org

 

Please help support the move to the new site, and DONATE what you can.
A big Thank You to those who have donated already!

 


       
       
       
       

Go to our Homepage
Improve your Jag-lovers experience with the Mozilla FireFox Browser!

  View the latest posts from our Forums via an RSS Feed!

Jag-loversTM Ltd / JagWEBTM 1993 - 2017
All rights reserved. Jag-lovers is supported by JagWEBTM
For Terms of Use and General Rules see our Disclaimer
Use of the Jag-lovers logo or trademark name on sites other than Jag-lovers itself in a manner implying endorsement of commercial activities whatsoever is prohibited. Sections of this Web Site may publish members and visitors comments, opinion and photographs/images - Jag-lovers Ltd does not assume or have any responsibility or any liability for members comments or opinions, nor does it claim ownership or copyright of any material that belongs to the original poster including images. The word 'Jaguar' and the leaping cat device, whether used separately or in combination, are registered trademarks and are the property of Jaguar Cars, England. Some images may also be Jaguar Cars. Mirroring or downloading of this site or the publication of material or any extracts therefrom in original or altered form from these pages onto other sites (including reproduction by any other Jaguar enthusiast sites) without express permission violates Jag-lovers Ltd copyright and is prohibited
Go to our Homepage
Your Browser is: CCBot/2.0 (http://commoncrawl.org/faq/), IP Address logged as 54.224.184.33 on 21st Sep 2017 23:15:23