Just had the engine mounts replaced. Huge improvment in smoothness of engine. But, but, there is a slight engine miss. Miss is intermitent, no engine fault, just a slight nudge every so often. Mileage is 26k km. throttle body cleaned already. Anyone have ideas? 2010 carrera s, dfi pdk

 

Could be something as simple as bad gas. Does it miss at idle?

 

Yes. Just at idle. No perceived problems on any rev higher than idle. Compared directly to other older cars with dfi but lower mileage, The slight miss is just noticeable.

 

I had the same thing one time and the Chief Porsche tech @ my local PCar dealer and said it was likely from water in the gas. He put a bottle of HEET in the tank and it went away instantly.

 

Heet?

 

Ok searched that heet and its a water remover. Will give it a try. But is water in gas common or usually in cold areas because we have hot weather here in asia.

 

Heard it's very common from gas stations with car washes. A bottle of HEET in the U.S. Is only $1.59, so it's worth a try.