The Final Repair Guide to 5.4 Cam Phaser Tick/Knock Sound
My truck was built 05/09.
Has the rough idle after working at low rpms for 15-20 min (plowing) i just give it some throttle and it goes away. Other than that i can only hear it when cruising at a low rpm and tip in. No codes thrown.
Thanks
Holy hell... where was this write up on cam phasers when I needed it 3 months ago? I google'd this topic exactly and didn't come up with this... ugh. $1600 later..
Sorry for the delay in response - I'm not as fast as the young sprouts and life got busy after spending a week doing a Phaser job.
@Fordjunkync is correct, I have ran Mobile 1 Full Synthetic sense new. I Can't point to a scientific reason or big name study that drove my decision. We are all sorta' burdened with old, long held oil viscosity theories - often from our own parents
and I'm certainly no exception. But here is what logic I applied. My truck has 212,000 miles and I've always felt higher mileage called for higher viscosity. I've had an aftermarket Oil Pressure gauge installed for a year or so. Prior to the Phaser Job, I had gone to 0W40 - because: Cold Idle pressure was FINE with 5W20 (like 65 lbs) but would saagg to around 16lbs at hot idle] With 0W40 Cold Idle pressure was around 63, but hot idle was much better - around 19-21.
I did not know WHAT the effect of new Melling 10340 high volume pump OR new Phasers, Tensioners and lash adjusters would actually have on my pressures --- But basically I figured that; at that milage, the lower end probably would benefit from slightly higher weight. So I chose to start out with Mobile 1 full synt 5w30.
AS IT TURNS OUT --- I "may" try 5w20 on the first change because the oil pressure is really up there! With the 5w30, Cold idle is 90-95 lbs, and hot idle is 25-27. Even in gear with A/C on, it will be 24-25. I have noticed from prior experience that the oil pressure declines as the oil ages - and I have only driven about 100 miles since the Phaser job. So I plan to watch it until the first oil change. Also - it's noteworthy - Watching live data with the Torque Pro App - the Phasers / Cams react to PCM commanded retard positioning a little slower with thicker oils. I can see CAMERRR "bounce" negative 20-30 crankshaft degrees for a couple of seconds when the PCM calls for advance - and "Bounce" positive 20/30º for a couple of seconds when the PCM calls for retard. It just takes the Phasers a little time to get the cams positioned where they are supposed to be. /// OBDII Theory says >5º Error for > 5 Seconds = DTC P0021 or P0022 as appropriate /// I have observed this same thing with 5w20 - just shorter time. So all THAT will play into my decision whether to stay with 5w30 or go back to 5w20.


@Fordjunkync is correct, I have ran Mobile 1 Full Synthetic sense new. I Can't point to a scientific reason or big name study that drove my decision. We are all sorta' burdened with old, long held oil viscosity theories - often from our own parents
and I'm certainly no exception. But here is what logic I applied. My truck has 212,000 miles and I've always felt higher mileage called for higher viscosity. I've had an aftermarket Oil Pressure gauge installed for a year or so. Prior to the Phaser Job, I had gone to 0W40 - because: Cold Idle pressure was FINE with 5W20 (like 65 lbs) but would saagg to around 16lbs at hot idle] With 0W40 Cold Idle pressure was around 63, but hot idle was much better - around 19-21.I did not know WHAT the effect of new Melling 10340 high volume pump OR new Phasers, Tensioners and lash adjusters would actually have on my pressures --- But basically I figured that; at that milage, the lower end probably would benefit from slightly higher weight. So I chose to start out with Mobile 1 full synt 5w30.
AS IT TURNS OUT --- I "may" try 5w20 on the first change because the oil pressure is really up there! With the 5w30, Cold idle is 90-95 lbs, and hot idle is 25-27. Even in gear with A/C on, it will be 24-25. I have noticed from prior experience that the oil pressure declines as the oil ages - and I have only driven about 100 miles since the Phaser job. So I plan to watch it until the first oil change. Also - it's noteworthy - Watching live data with the Torque Pro App - the Phasers / Cams react to PCM commanded retard positioning a little slower with thicker oils. I can see CAMERRR "bounce" negative 20-30 crankshaft degrees for a couple of seconds when the PCM calls for advance - and "Bounce" positive 20/30º for a couple of seconds when the PCM calls for retard. It just takes the Phasers a little time to get the cams positioned where they are supposed to be. /// OBDII Theory says >5º Error for > 5 Seconds = DTC P0021 or P0022 as appropriate /// I have observed this same thing with 5w20 - just shorter time. So all THAT will play into my decision whether to stay with 5w30 or go back to 5w20.
Hello! Great write up! The only questions I have are, is it necessary to lock the cam? Can I use vise grips instead of the OCT tool? (Expensive! ) do I have to remove any followers on the engine to begine? Lastly, shouldn't the crank keyway be at 11 of clock with the mark at 6 of clock were the special tool puts it? And when you say TDC, do you mean the #1 cylinder? That's all. Thank you.








