Hi it's the bottom plug. Measured up at 21.5mm. A core plug from a defender part number 250830 is 7/8. With a bit of fetteling this should fit. In the process of sorting it now. Will let you know how I get on. Thanks

Hi. I can't seem to upload picture. If you look at the vacuum pump on the back facing out there is two core plugs. One of these on mine is missing.

Hello. The vacuum pump on my 300tdi discovery has one of the core plugs missing. It's the one on the right hand side. The pump still produces vacuum and is not leaking out of the missing plug hole. Does the core plug hole the valve in place and is the car ok to drive until I'm able to repair it...

It's got new earth strap from engine to battery. Starter connections have been cleaned up. Battery is 70 ah 580 cca. If disco didn't start straight away the starter struggled to turn engine over fast enough.

Thanks for the replys. Got a 072 excide batter on at moment. Bought new last year but has always struggled to turn engine over on a cold day. Disco is a auto edc.

Hello. What is the biggest size battery I could fit into battery tray of a 300tdi discovery? I've done a search but it's not working.

Ok I will strip it out and give that a try. Thanks

Checked over fitting of window regulator. Removed and refitted. Still the same. When window is fitted to regulator the mechanism sits down slightly on one corner. The whole mechanism seems to be very loose. The plastic runner wheels are a poor fit in the runners.

There seems to be lots of play through mechanism when it is moved.

Motor and regulator gone back in same place door glass has also seated ok. It is a britpart regulator might be slightly out. Thanks

Hi I've replaced the broken window regulator on disco 1 drivers door. The window will now not sit square in runners and rattles when open. Any ideas how to adjust? Cheers

There's a rod with star shaped drive from back of lock into door latch mechanism

It's a 96 auto edc

Ok thanks. I will have another look today. When the latch is operated on drivers door there's a clicking from under glove box. Is there any common problems with control unit? Is it next to window control box? Cheers

Yes car is a jap import 300 tri auto. Alarm is a Selca with one button on fob. Pushing fob arms/disarms alarm and imobiliser and central locking. When ignition is turned off only imobiliser is armed. Button has to be pressed with key in ignition for imobilser to be disarmed.

Thanks. I've unplugged each motor individually still the same. There's no lock unlock on dash board and central locking does not work off the key or by operating latch inside car.

Hello. My central locking has stopped workers by on the fob. Locks try to move but then stop. Central locking stopped working on key a while ago. There's a clicking under glove box when latch on diversified lifted. Took the actuator on drivers door apart. Spins one way when fob pressed but only...

Ok. Thanks for the reply and help will look at upgrading.

Thanks. Doing a lot of towing with heavy loads up and down some long hills. Brakes are ok for normal driving but get a bit hairy on long downhill. Auto box tends to want to run away even in lower gears. Brakes are ready for new pads discs fluid and flexible hoses. One scalpers has started...

Hello. Thinking of fitting 110 vented callipers onto my discovery 300 tdi auto. Is it a straight swap of callipers discs and pads? Is the disco brake master cylinder ok to use? Thanks