I have been experiencing a vibration/shudder upon acceraration when the gas peddle is lightly pressed at low and high speeds. I was told there is a bullitin regarding this. Can someone please confirm? My drive train warranty is still in effect.
Thanks in advance,
Joe

 

Which engine, and how many miles on it?

 

It is the twin turbo eco boost with 43K miles.
Thanks

 

It's time for new spark plugs. They should be replaced every 40k on the Ecoboost, regardless of what the manual says. Motorcraft SP594.

https://www.rockauto.com/en/moreinfo...t=7212&jsn=949

 

Exactly what glc said. Those engines are very hard on plugs, irregardless of what the OM says.

I have a vehicle that states to change plugs at 30-40k in the OM. When I saw that, I was like "oh my"!

Some of these engines, the way they work for efficiency (ya know EPA stuff), some parts get beat up hard.

 

Thanks!. I will try that. When they changed the cam phaser, under warranty co-incidentally the shudder started to appear