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DrT

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Posts posted by DrT

  1. Since the manual isolator is normally closed the chance of it welding that way is very small as there won't be any arcing happening until the moment you try to open the isolator. The contactors are always opening and closing by the very nature of their job so the chance of them welding is very much higher as they will arc an awful lot at high currents.

  2. Here's a question, if I temporarily removed the belt that goes around the alternator, water pump etc would I do any harm if I started the engine and drove it for a couple of hundred yards or so with the engine cold to cut down on the chance of overheating? This would at least prove if it was a pulley or something related to that belt.

  3. My Disco 300Tdi Auto has developed a loud squeak. The problem is it only does it while driving and not when its stopped. It is definetly engine related because I can vary the pitch of the squeak by varying the engine revs.

    I tried the penny trick in case it was the tensioner pully, I've even replaced the bearing in that pully but no difference. I've just replaced the water pump since I could hear a slight rumble from it at tickover with the bonnet up but still the squeak persists.

    If I rev the engine with the bonnet up I hear no squeak. As soon as I drive a few hundred yards down the road the squeak starts. If I stop, the squeak stops. Its driving me mad. I'm asuming its a bearing somewhere so does anyone have an idea which one it might be?

  4. Hi,

    On our very early 300Tdi its suddenly started to spit diesel out of a small round hole in the body of the lift pump! The hole is located on the same side as the manual priming handle is located and on the widest part of the pump just below the lip between the top and bottom parts. It looks like it should have a grub screw in it but its at such an akward point to get at I can't be sure if it really is threaded.

    Has the hole just miraculously appeared or should there be something in it thats gone walkabout?

    I've taken a look at the almost identical pump on the 200Tdi and there is nothing there in the same location.

    Any ideas or clues would be most appreciated!

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