So I have a 05 F150 screw Lariat 4x4 with 251000 miles and it has a diesel like sound. Any body have any suggestions?

 

Yes, search. It is a cam phaser issue.

 

Okay. Do I need to replace timing chains and all also? Or will I be okay with just replace the phasers

 

I am not 100% certain, I believe it is harmless if you decide to live with it. I did with my 2004 5.4L and it ran fine. Timing chains should be changed out every 75k I have heard however. Just a preventive maintenance procedure.

 

The truck has a lot of miles so I'll do the phasers and I'll check the play in the chains and the chain guides and I'll go from there.

 

Congrats on the high miles! I wouldnt frown at any needed repairs at a quarter million miles.

Good for you

 

I just got the truck, only paid $2000

 

I'd question going through all that on an engine that has that many miles on it - I'd probably drive it till it quits then replace the engine or junk it.

 

^^^ This.

Most all 5.4 3v engines have the cam phaser knock. Mine does, it's normal, and my engine runs like a top. Also the fuel injectors on ALL 5.4 3v engines are noisy. Same deal, normal.

I ain't skeered.

 

So I just did a short trip, about a 10 min drive to a friends house ran fine the whole way. When I got to the house the truck died out.... and it did the same thing when I got home... not swell... any ideas? No leaks, all gauges are fine and no CEL

 

I think you are talking about timing belts, not chains.

 

Did it crank, and not start?

 

the 5.4 3V uses timing chains, not belts

 

It fired right back up

 

My point is you don't change timing chains every 75K miles, only belts.