To save any possible error or confusion when it comes to the refit, you could do what I did and simply get a piece of cardboard and draw the shape of the sump on it, and each time you remove a bolt, poke it through the cardboard in the relative position it came from and number either a few for reference or all of them. Had we not caught this, the engine would have failed in the fairly near future. At this point I pulled over to check on the car. Now today I was doing further research and found on the edmunds website 3 other 03 discovery it's with 40,000, 57,000 and 60,000 miles on the engines that had the exact same thing happen. The is a required sequence to do this, so I have copied it here below directly from the workshop manual. It's got 65K miles and head gasket was replaced only few hundreds miles ago.
The time has come to replace the 2006 D3 timing belts 159000ks on the clock and from what I am reading it is also advisable to replace the oil pump housing. Keep hold of the sprocket to make sure it stays in position when you take the bolt out. There is no metal or evidence of damage visible. The outer gear of the pump had fractured into four pieces. It seems noise is coming from valve cover area or under the intake manifolds.
I wrote a letter to lrna and called the corporate hq several times. Having this technology seemed to be a little downside because the models became heavier, compromising agility and performance. I didn't check the invoice to see what weight was used. Customer will have to pay for these repairs in their entirety, despite the fact that they are caused by original manufacturing defects, as Land Rover has not issued a recall. Some of you out there may read this and be all to familiar with the issue. When we asked the service manager about that, he said that if it was a faulty oil pump it would have blown by 20,000 miles and not gone to 44,000 miles.
They, after talking with Land Rover directly, said the engine wasn't getting enough oil and we would need a new engine!!! Why do we have to pay that amount of money when the manufacturer has hundreds of these failures. If the engine temperature is rising above the normal temperature range, the oil pressure is insufficient and friction is starting to develop within the engine. Other automakers have manufactured cars made from fused models, but this jewel was different in that it was a four-by-four that could assault any condition it was subjected to—a real workhorse, in short. Land Rover Replacement Oil Pumps Enthusiasts who acquire a Land Rover realize that performance and style are well worth the price; outstanding accessories can keep your car or truck in the best condition. Cheers Ean There now seems to be a growing number of service centre's that wont change the belt for you without changing the oil pump housing as well. I called Land Rover of America and was told I was the only Land Rover owner to have a fire in the seat, which I found was untrue then I called them back when the oil pump went and said that my car was out of warrantyand was too old for Land Rover to do anything for me. The hydraulic lifters are ordinarily not noisy at all.
He is also reviewing it for the possibility of a class action lawsuit. Or couple lifters are worn or defective so it requires higher pressure. The spots in the image are just bits of crud you see in any oil pan. This wasn't a neglect issue. I believe that I am responsible for the ownership and reasonable risks associated with a used vehicle. I heard that there are many reasons for such noise, Some will just tick like that naturally and go on without much problem. As I began to pull over, the car stalled.
So obviously it is a manufacturing defect if it is happening to so many cars. It's not only the performance that the Discovery has going for it. This pipe is a solid metal and rubber pipe. At this time I can not recommend the Land Rover line of vehicles to anyone after owning one my self for the last 12 years. Aside from that, it is also exposed to acidic elements that eat away the paint.
I have researched and it appears this is a known issue and has been acknowledge by Land Rover that the Land Rover discovery 2003 the oil pump was faulty, however have denied any kind of solution to the problem to multiple customers other than suggesting a new engine. Now that have found it and moved it away it would most likely be ok, but I will replace this at the earliest opportunity. Their statement was that it was up to the dealer. I end up source an used engine and replace the whole thing. Failure also caused by block alignment positioning.
And noise definitely comes from under the intake manifold. We tried calling the dealer on Saturday, August 16th 2008 but the service department is closed. I wrote a letter to them. The second problem is the oil pump. I don't understand as a consumer we can be expected to be held responsible for repairs on a vehicle which the manufacture knowing and willingly manufacture the a vehicle with faulty equipment.