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Old 1st November 2019, 11:21   #18
SD1too
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Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model.

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And here is the correct method of refilling/bleeding a 75/ZT diesel Josh.

To increase your chances of success at the first attempt, I would follow MG Rover's recommendation that the system is first fully drained (after which you can back-flush the heater matrix as Trikey suggests) including the cylinder block drain plug.

I don't have a diesel, I have a petrol 75, but by following the MGR procedure for my engine exactly, I have never had an air lock, overheating or poor heater performance.

Let us know how you get on.

Simon
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