Thread: Welch plugs replacement Disco 2

Originally Posted by nickcalc

My mechanic told me that I need to replace the welsh plugs on my 1999 Land Rover Discovery II. I was told that in order to do so they have to remove the engine to access the plugs...is this true?

Nick C.

Much better if you replace the welch plugs.

However, apart from that, which ones? There are plugs on the sides of the engine and on the rear (these will require engine or gearbox removal). There are also plugs on the front and back of the heads.

These are the rear ones:

Originally Posted by p38arover

Much better if you replace the welch plugs.

Thanks Ron. I did a search for welch plug information a couple of weeks ago and found nothing useful until I did a search for welsh plugs! Just another reason for correct spelling on forums!

Originally Posted by nickcalc

My mechanic told me that I need to replace the welsh plugs on my 1999 Land Rover Discovery II.

Why does your mechanic say they need replacing? Are there any that are leaking? They can often be replaced as a precaution, but I prefer the "aint broke, don't fix it" rule ...


Paul

Well the mechanic has inspected the car yesterday and he reckons that one of the plugs shows signs of corrosion and it's actually starting to leak! Thanks

Nick C.

Ahh. If he can see it, it must be on the side. However, he may be suggesting that the motor come out and all plugs be replaced which is sensible.

Cheers mate I think you're right as what you say makes sense to me! I will get all the plugs replaced as loosing the coolant has always dire consequences! Many thanks,
Nick C.

Originally Posted by awabbit6

Thanks Ron. I did a search for welch plug information a couple of weeks ago and found nothing useful until I did a search for welsh plugs! Just another reason for correct spelling on forums!

I'm just about to fix the spelling to overcome that problem

Originally Posted by nickcalc

Cheers mate I think you're right as what you say makes sense to me! I will get all the plugs replaced as loosing the coolant has always dire consequences! Many thanks,
Nick C.

Yes, loss of coolant can be expensive.

I forgot to ask, is it a Td5 or V8? Not that it makes much difference. Unfortunately, it's not going to be a cheap exercise.

What coolant have you been running?

It's a V8...it used to run on the "pink" coolant (not sure of the specific type) then I switched to the "green" stuff. I know the pink coolant can be corrosive and perhaps that's why I ended up with leaky plugs after only 120,000 km's (BTW what's your opinion about this?). You see I purchased the car second hand so I didn't get to choose what coolant to chose in the first place. My mechanic supports the theory that the pink type coolant shouldn't be used in such an engine...and...yes I know it's going to be expensive to change the plugs as the engine has to be pulled out! Cheers,

Nick C.