ovidio

i have a f 150 2004 4 x 4 with en engine 5.4L and I have a problem of lose power a lot of times a day. each time more frecuently.

I have check and fixed a lot os small problems and is in the same situation.

I have read that if I change the two variable timing cam phaser 917-250 the problem is solved.

Is it true??

Thanks

Ovidio