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Bad fuel consumption

Andre1981

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Hi there, hope everyone's having a great weekend. So I have the 200thp gt and use it as my daily drive. It runs fine, except for the little white smoke when i start due to the valve seals that needs to be replaced. I do push her hard and the power is there, but lately noticed that she is getting really bad fuel consumption. So i am getting 21 miles per gallon. Is this normal? If i drive it like its my in-laws i get best 25 miles per gallon. New filters new oil and new plugs has been fitted. I did a live data test on it and the fuel trim on bank 1&2 is 0.8 % with a 15 degree timing, this is all at idle. Also i have attached a few pictures of my inlet valves, could this make such a drastic difference in my fuel consumption? Thanks
 

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Pedro

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I got the 200 & if its pushed hard it does use fuel & fuel trim is measured in Long & short if you have live data scanner you can check it whilst driving but heavy fuel consumption could mean burning too rich could be valves sticking open but that may mean timing is out? Check the Oxy sensors to see if they test positive
 

RCZ-R

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By the time the valve seats get replaced you'd clean that inlet and the valve seats properly. They are significantly clogged. It is not yet really bad like I often see with VW engines, not at all, but it would be advisable to clean them.
 
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