Disco td5 engine problem

Hi all,

Got a problem with my disco TD5. It started to overheat the other day and i had a blown top hose which i changed. The car got a bit hot a few times but i stopped and let it cool before going on. Since then i have noticed a real loss of power, especially going up hills. On Sunday, i was on the way home and i lost all power completely and the temperature shot up. I stopped waited about an hour and then filled it up with water again. about a mile down the road a loud knocking noise started. It is quite quiet on start up and on idle but as soon as you give it any revs the knocking noise starts and gets louder with acceleration. It seems to be coming from the top of the engine. I thought that the head might have gone with the overheating so i changed the head gasket yesterday. When the head was off i looked at the head and nothing seemed to be wrong all of the valves and the rockers seemed OK. The pistons seemed OK. I ran the engine with the rocker cover off and the rockers seemed to be going up and down as they should be. Any Ideas?????

Another famous TD5 problem is oil pump failure when the oil pump drive sprocket bolt comes loose because LR forgot to use thread lock. What is your oil light showing with the engine running?

If you ran the TD5 engine with the cover off and did not get covered in oil then my money is on your oil pump not working hence the knocking noise and overheating.

There is a high pressure oil jet that lubes the timing chain and feeds the timing chain tensioner. Running a TD5 with the cam cover off is not an option as it will pump all of your engine oil over the bonnet in a few seconds. Go on and ask me how I know.

U can also check the water pump pully or the pump itself....albeit mr. Shifty has a good a point with the oil pressure......though its common for the early td5's(u can ask me too how i know:doh

I'm with shifty. Unless you have an oil slick on yer driveway after running the engine with the rocker cover off yer oil pump aint doing it's job properly. As Shifty says, The oil sprocket bolt often doesn't get enough threadlock and then makes a bid for freedom.

There's a quick & clean way to check oil pressure. Just undo the oil pressure switch and hook up a pressure gauge, either straight on or with an extension hose in between. Should read 3 bar when idling (cold), and 1.5 to 3 bar at high rpm (hot). If below 0.5 bar the oil pressure warning light should come on.

Have you lost coolant at all?

Unfortunately the dashboard temperature gauge remains practically flat between 72 - 108 °C (own observations) and then it shoots right up, but if you'd be able to follow it real time (i.e. with nanocom or hawkeye) you'd see how load & rpm dependent actual coolant temp is and sort of diagnose your water pump condition.

Hi Ive Just changed a set of front brake pads on my 2000 td5, So had the motor jacked at the front, gave the motor a test drive and all of a sudden the motor started to lose power then smoked a little and then cut out and now wont start. Can anyone help or have an idea what might have happened.

Read fault codes before u do anything else......it could be lots of reasons