I JUST BOUGHT A 2O02 JAGUAR S TYPE 3.0 HAS 75000 MILES ON IT..THE CAR HAS A HESITATION.. LIKE ITS MISFIRING.. I CHANGED THE SPARK PLUGS... THE COIL PACKS AND THE BOOTS...
SO I WAS LISTENING TO THE ENGINE. IT WAS MAKING A HISSING NOISE.. SO I TOOK THIS HOUSE OFF AND STUCK MY FINGER ON THE PLACE WHERE D HOSE SUPPOSE TO GO AND IT STOP.. DO U THINK THE HOSE NEED TO BE REPLACE..SOMEBODY HELP!!!!!!!!!

 

Inspect the hose and look for some cracks - sounds like you may have a leak.

 

WHAT HOSE ARE YOU TLAKING ABOUT, AND GLAD TOO SEE IM NOT THE ONLY 1 IN CAPS

 

ITS THE HOLES ON TOP OF THE UPPER INTAKE MANIFOLD..

 

Pictures are helpful...

 

i posted pictures

 

OK I LOOKED AT YOUR PICS YOU PMD ME AND THAT YOUR PART LOAD CRANKCASE BREATHER HOSE. PRONE TO DTERIORATION AT THE BACK RUBBER ELBOW. REPLACE IT WITH A NEW STYLE RIBBED ONE OVER THE ORIGINAL SMOOTH 1. BUT MORE IMPORTANTLY IS THAT IF THAT ONES BAD SO IS THE LARGE ONE UNDER THE INTAKE AND FUEL INJECTION RAIL IN BETWEEN THE HEADS TOWARD THE BACK OF THE ENGINE, CREATING A LARGE VACUUM LEAK, ROUGH RUNNING AND MISFIRES........IS A PIA TO CHANGE HOW CONFIDENT ARE YOUR SKILLS?