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Omega General Help / Re: Tick over lumpy, EGR valve?
« on: 20 July 2018, 08:01:40 »If there's a lot of noise from the manifold when cold which quietens when warmer it would suggest[to me at least] that the manifold is cracked/not tight or the gasket has blown.Expansion from heat then closes any gap.Could this have an effect on its ability to tick over smoothly?Yes, agreed, but i am not leaning in that direction.