I Just Bought a 2001 Disco II. I was told that the motor was blown, but after doing some investigation work there are a large host of problems. My questions is it normal for an 2001 with 52862 miles on it to have no compression in the number 2 cyclender. My first thought is that it has a stuck valve. The plugs and wires were replaced by someone else and I think they are they wrong ones. One of thecoil packs is bad. Just to list a few things I have found.

Thanks

Jeff

 

low oct fuel will gum up these motors and make the valves stick, i read about the sleeves breaking loose from the block as well. but i think #5 was the common culprit for that.

 

when you say 'no compression' do you mean the compression gauge reads 0 psi? If that's the case then you have a major problem. I think even a stuck valve would register some compression.

 

Well if the plugs they put in were to long then they could have poked a hole in one of the pistons.
A stuck valve could happen, but not at 52k.
Is the coolant level full?
I am guessing that they overheated it and dropped a cylinder sleeve.

 

stuck valve very probable, seen many times before, easy to tell open the valve covers and see if a released rocker is really loose. spark plug theory is for marvel comics, you can put your ****** in that hole and if its less the 3 inches you wont feel the cold of a piston crown. now i have seen ( on very few occasions) a sleeve slipped beneath the head so badly that it releases compression. but you would see coolant flowing like niagra falls all over the place. pull the covers and crank the engine watch the rockers. scott

 

To answer your question, no it is not at all common to have that happen at your mileage or 200,000 miles.
What was the compression on the other holes?
On D2's it was not a common issue to have a valve stick, mainly on a couple years of the D1's only.
The head will need to come of, how mechanical are you?
Let us know what you find.

 

mike do you know how many valve jobs ive done on the bosch engines??? 100's the intakes routinely stick, some are so bad that you need to wack them out of the intake guides, and use a wire wheel on the stem to clean them. Land Rovers solution is to over bore the guide with a reamer (standard shop equiptment for dealer). scott

 

I was under the impression that the sticking valve issue had been resolved, I may stand corrected, going to have to look back into this.

 

Mike,
The rest of the cylenders all read in spec. I have been doing some reading and believe that I have found the problem. The coil pack that is bad feeds spark to three of the four spark plugs on the left side. With that pack going bad the plug could not fire and fuel built up inside the cylinder. I am very mechanically inclided as I have rebuilt several Jeeps and trucks also a couple a ventage motorcycles. I feel that my first step should be to pull the vavle covers and check for any loose rockers. If you think of anything else to stear me in a direction please let me know. Thanksso much for the info. I would really like to think I have gotten a good deal when I bought this vehicle. I could not pass it up.
I have already bought two new coil packs, plugs, and wires that are spec for this vehicle. I spent a little extra money on this part.

 

instead of spending 5 hours removing intake and valve cover I would spend 5 mins doing a cylinder leak down test...just my 2 cents.