the piece of shiiiitey plastic part load breather tube/hose cracked on my 98 xjr. I tried to seal the crack with some plastic epoxy.
question #1 (+1.5): am I fooling myself to think that the epoxy will seal the crack? How would I even know if it did?
question #2: what are the effects of running with a non-sealed part load breather hose? Will this create a vacuum leak, causing it to run lean?

gotta love all the plastic!!

 

dont even bother trying,

just order a new one up ,

it cost me £12 UK from my local dealership , the short one to the air-box is only £6 if required to........

BB

 

The plastic breaks as it gets hot with the routing over the knock sensors. Just replace it. While you have it off, make sure your part load breather is clean.

 

the PLB passes from the front of the left cam cover , down under the intake manifold, it connects to the bottom of the TB and then further round onto the side of the TB( so 3 plugs in total ) , it can be a pig to replace, as getting your hand in to push on the new ( tight ) connector is a royal pita ,

please bear in mind, your ' plastic ' part is now ten years old and has spent all its life inside the valley of a V8 engine, and has gone past the accepted life span of a vehicle, so a small part in the engine isnt to bad with regard to failure , is it.....?

it will effect running and idle of the car, and best to get replaced asap, i put some gaffer tape round mine until the new parts came in, it held up quite well for a week or two...you will be amazed at how flexible the new pipe is over the old one....

cleaning the hole on top of the cam is a simple matter of using a fine drill bit to go into the hole, and gently remove any crud that might be there.

BB