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wuzerk · 22nd January 2011, 09:46

If I can add my twopennyworth, I am friendly with the owners of an MOT station who say that they have received official notification that the sinking pedal on a Rover 75 diesel is NOT a failure point when the engine is running. It is a failure point if the pedal sinks when the engine is off.
I don't profess to know why, and they didn't elaborate, but it may have something to do with the fact that the diesels generate the brake vacuum by way of a pump? i.e. anything powered by a pump will have a fail safe valve which might be the reason? OR,at tickover only, the pump cannot maintain the vacuum?

22nd January 2011, 09:46	#17
wuzerk Passed Away Rover 75 CDT 03 auto Conn. SE Join Date: May 2009 Location: London Posts: 2,885 Thanks: 104 Thanked 254 Times in 204 Posts	Sinking pedal If I can add my twopennyworth, I am friendly with the owners of an MOT station who say that they have received official notification that the sinking pedal on a Rover 75 diesel is NOT a failure point when the engine is running. It is a failure point if the pedal sinks when the engine is off. I don't profess to know why, and they didn't elaborate, but it may have something to do with the fact that the diesels generate the brake vacuum by way of a pump? i.e. anything powered by a pump will have a fail safe valve which might be the reason? OR,at tickover only, the pump cannot maintain the vacuum? Last edited by wuzerk; 22nd January 2011 at 09:57..