First off, thanks to everyone on this forum who has helped me with info. I've only had my LR for 3 weeks but i've learned so much in that time, mainly because of this forum, so thanks again. I am 90% sure my head gaskets are blown but i need to perform a compression test and a leakdown test to be positive. The engine makes a hissing sound around the head/intake area and it's obvious that air is escaping from somewhere. I've been told that a leakdown test is the way to go at this point. Referring to my Haynes manual, it suggests a "proper" shop peform such a test. Can i do this myself and if so, where can i rent/purchase the necessary tools for the test? My plans were to replace gaskets and get the heads looked at by a machine shop. I've never done this on any engine before so i want to be sure i'm doing the right thing before i proceed. Here is a quick rundown -

96 DISCO 1 - 145 000 miles

Runs fairly strong, albeit a bit rich, but it sounds like a steam powered locomotive coming down the street, obviously something is leaking

No known prior history of the vehicle, but from the looks of it, i would say it's been neglected but not totally ragged out.

There you go. Looking forward to getting this damn thing on the road again. Any help is greatly appreciated. Hopefully a little TLC and solvent will do the trick.

 

If you are hearing the Hiss, don't waist too much time with it, pull the heads down, keep an eye open for cracks and warpage.
Mike