Hello every one new to site very helpfullg. stuck in a jam, I have a 06 ford expedition 5.4 3v I am in the process of replacing the timing chain, every thing had moved during removal so I put engine back at TDC. line up my marks. I wanted to check timing was right. so I went through rotating the crank again, put it back in TDC "MAN THAT WAS EXHAUSTING" and the marks were off? Am I at the wrong stroke? or does that not matter on these engine. Please forgive my ignorance am not to familiar with these 5.4 3 v. am kinda old school in my mechanic skills. I been a Ford man all my life but I know I missing a step here, any help well be much appreciated

 

How many revolutions did you turn the crank?

 

You're screwed now. The 5.4 is an interference engine, which means that as you rotated the crank you jammed pistons up into opened valves and likely bent the stems. Any repair manual worth it's salt would've had this warning in it to not rotate the crank with the timing chains off.

 

Will yeah Ive heard that about the Valves thing, but i had put the new chains on before i rotated them. I am pretty sure i am off a tooth, matter a fact i am sure that i am because after I recheck it after I did my revolutions it was off a its mark by a "chain link. " I just don't know what am doing wrong? oh to answer your question pdqford I did 4 revolutions TDC. is that not the process with these engines thanks for the help really need it.

 

Due to the length of the chains it takes something like 38 revolutions before all the marks will line up again.

 

I don't know the actual number but I do believe it would have to be divisible by 4, being a 4 stroke engine and all.

 

Oh okay, dodged a bullet there.

 

Lol, yeah that wouldn't have been good. I got enough problems I think I know what I did wrong looks like I may have time right cammphaser to the wrong mark I line it up to the L not the R the piece of crap book I have say to line up booth cammphaser to the L mark. A buddy of mine has a Aldata subscription it say lift should be on L right should be at R things is both cammphaser have lift and right marking on each of them WTF

 

Well looks like I got it guys the right side cammphaser was off its mark. My mistake I time it; to the L wrong mark not the R. She perring like a kitten, it was an experience. I least I know how to fix my truck F 150 5.4 has the same problem but thanks guys for the help and insight plan to visit alot GREAT SITE!!

 

It takes 52 revolutions to line back up. You should be fine

 

When I did my Timing, Phasers, pump and all for the first time last month the first thing I did when I got everything exposed is mark the locations of both cams with a marker and then note the cranks location. This made it very easy to time it back when putting it together.

The only thing about doing this is when lining it up and putting the chains on you want to make sure there is no slack in the chain especially on the side that is going to be pulled on when you start the motor.

I recommend this method because I never had to turn the motor over even once and now she runs like a pro. Did this at 180k. Just rolled 187k and she still hits 5k on the tach no problem. Damn I love them 5.4s