I did some work on my 5.4 and put on a new timing set,it was all good for a while,maybe 1500 miles, now my chains are slapping the timing cover,i took everthing apart and didnt seem to find out what it is I have done wrong somebody please help me..

 

The tensioners work off oil pressure.
What is the state of these tensioners?

 

New,came with the timing kit,im going to disassemble it again to make sure I have my left and right,right

 

Why did you change it in the first place? Low oil pressure will allow the tensioners to go slack. Have you checked the pressure at idle? Did you change the crank gears?

 

Changed everything except cam gears.i changed the timing set cause the motor had a cam lock up in the head,and I just figured I do it when I was there along with rod/main bearings oil pump and all new arp hardwear never checked oil pressure at idle,but the in dash dummy guage says everything is fine

 

I got it..my oil tensioner was bad put the original 150k mile ones back on