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  Thread: SD4 Engine flat spot
Post: RE: SD4 Engine flat spot

Tried the reset, it didnt cure the problem. I also changed the MAF sensor last week, its helped, as has the new air filter, 99 octane fuel, a bottle of Techron fuel treatment etc. but still have a def...
carlos50 General 54 24,261 15-04-2019, 08:05am
  Thread: SD4 Engine flat spot
Post: RE: SD4 Engine flat spot

Hi there, new to the forum, just picked up a 63 plate Si4 Dynamic for my wife and it has a terrible flat spot, or more like a lack of power when accelerating. No error messages stored so thinking eith...
carlos50 General 54 24,261 07-04-2019, 10:46am
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