Topic: Alarming rattle on mid to top end of my 2001 4.0 WJ (Read 1255 times)

tony1963 · « **on:** December 20, 2010, 08:22:01 PM »

Hi,
New member as a mate recommended this site.
I have a 2001 4.0 WJ Grand Cherokee that has just developed a loud rattle on the mid to top of the engine. It started out as a light tappet sound when cold, but after a 150 mile trip on the motorway yesterday developed into a expensive sounding noise. It seems to be more on the fuel side of the engine if that makes sense. I am not from the Rochdale area and relatively new to Jeeps. Does anyone have any ideas or now of anyone in a 15 mile radius that may know what they are doing with this straight six? The oil pressure is really good (3.0 at idle when hot). It does have a CLS gas conversion on it if this is could be an issue. Any help appreciated.
Tony

isle of man · « **Reply #1 on:** December 20, 2010, 09:49:31 PM »

It's possible you have cracked the exhaust manifold - common fault look at this first.

scrw · « **Reply #2 on:** December 20, 2010, 10:07:54 PM »

4l WJs tend not to do it as they are 2 piece manifolds, you may get lucky though. LPG won't be your issue. Wait till morning and see if you can see any exhaust leak in the cold air

Author Topic: Alarming rattle on mid to top end of my 2001 4.0 WJ (Read 1255 times)

tony1963

Alarming rattle on mid to top end of my 2001 4.0 WJ

isle of man

Re: Alarming rattle on mid to top end of my 2001 4.0 WJ

scrw

Re: Alarming rattle on mid to top end of my 2001 4.0 WJ