Hi all can anybody help I have a Mazda 6 08 2.0 diesel which up until the other day has ran well , starts up ok then idles rough, revs hunting slightly. When trying to drive has no power splutters and struggles until I hit around 2500 -3000 revs then pulls ok , I know it's not dpf as it has been deleted can anyone help , thanks.

 

Have you ever had your intercooler checked for leaks? I would start there.
READ THIS: https://www.mazdaforum.com/forum/maz...-please-29697/

 

Problem solved erg valve stuck open , it was my first port of call and after a good clean problem solved . If it would of been my intercooler on a 08 car Mazda would have some explaining to do intercoolers are a rare problem, but thanks for you input . had a feeling it was erg , but it's good for suggestions , thanks