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COLVERT · 5th October 2019, 21:49

Dawn.--Is your MPG normal.

If so there's no excess fuel going into the system.

Higher revs means the catalyser will be very hot which will increase its efficiency.

It will never get hot enough with the car just ticking over on your drive. If fact if it's going to foul up that's where it will do it.----

PS. Number 6 has it right.---

5th October 2019, 21:49	#10
COLVERT This is my second home R75 Saloon. Join Date: Feb 2009 Location: France/or Devon. Posts: 14,003 Thanks: 3,851 Thanked 2,167 Times in 1,816 Posts	Dawn.--Is your MPG normal. If so there's no excess fuel going into the system. Higher revs means the catalyser will be very hot which will increase its efficiency. It will never get hot enough with the car just ticking over on your drive. If fact if it's going to foul up that's where it will do it.---- PS. Number 6 has it right.---