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Then at time 979.5 I hit the throttle... Engine RPM responds, phasers unlock

This is not an auto stop. However, it does show that parking the phasers happens during normal operation and when an engine stop might be anticipated. Sorry for the sloppy annotation. At time 933.33, I let off the throttle. (3rd trace from bottom). At time 958.66, the truck rolls to a stop...

My pleasure!!

Yes, the basic line of thinking is that at engine stop, the phasers go to their home positions forcefully under oil pressure. At the same time, the oil pressure on the side of the phaser which floats the lock pin is removed, allowing the pin to be pushed under spring force into the pin well. As...

Easy enough to prove/disprove. The park command is is all pwms to 0%. But, unless anybody really cares, I’m not going to bother. I’ve disable auto start stop for this and other reasons. My opinion is it would be a bit silly to not park phasers at engine stop. But I’ll believe what it tells me...

Check this out... Cam Phaser out of a McLaren and same phaser as a Lamborghini. The classic lock pin wear pattern. This is the full video: https://www.mclarenlife.com/threads/why-your-mclaren-cam-phasers-are-going-bad-video.107747/

The scope readings. These aren't too useful yet. Need more constant load and steady state situations. One thing that jumps out. At 266 seconds the intake does a short pin lock. I wonder what that's about. It's after acceleration and coming down to no load idle Hot Start - open_loop Oil...

There has been a lot of phaser posts on this forum. Mostly those have been about warranty work. This post is about what I wanted to know and couldn’t find. It’s not about when to advance and retard. It’s about how Ford brings those actions about. Theory can be found in other places not...

Hangon... I was seemingly not wrong on post #52. It's simply that the intake and exhaust have different locking locations and feed from different chambers. The exhaust lock pin ejects on retarding oil pressure. The intake ejects on advance pressure. The exhaust phaser lock position is...

Regarding my post #52. I picked up used MLZ and HL3Z...-CD exhaust phasers and took them apart. Neither showed wear, but I don't know their respective histories .... I learned something taking them apart and I don't want to be the source of bad info so some corrections. The post is mostly...

Do gen2's support glare free through Forscan, or is this only gen3 hardware?

I found some stuff... This is a patent of an improvement to prior art. https://patents.google.com/patent/US20050188933A1/en In the patent the prior art is described as I described it; a channel to the advance chamber to retract (eject) the lock pin. And a problem with the prior art is...

Thanks. Not quite but interesting nonetheless

This is kinda funny given this thread: https://www.toyotanation.com/threads/vvt-brief-rattle-noise-for-approximately-1-second-at-cold-start-up.634018/

Wear is clockwise from the hole so that's the advance direction. So that would imply it's the ejection of the pin and advancing that causes the wear. Still getting my **** together. And I'm still probably confused

Another observation of the phaser part, both old and new, is in the backing plate with the loc-pin hole in it…. With this plate as installed and facing the engine from the front of the truck, the lock-pin filling/draining oil channel is counter clockwise of the actual hole. I think this means...

Agreed... I'm sure this is a tiresome topic to the many who have been Raptor owners and on the forum forever. But I bet last month and every month 100s or 1000s of Raptors change hands. And new people joined the forum. I'm guilty on both counts. And I tore into the forum to see what I could...

I’m reading FordTechOne’s response as positive in terms of the issue. It sounds as though the combination of 21b10, and either the ML3Z or the CD version of HL3Z may indeed have produced a result more in line with normal wear for cam phasers. I confess not to being that interested in what Ford...

FordTechOne would you mind critiquing my diatribe here: it’s pure speculation of course. Interested in your point of view. In more sophisticated VVT implementations there is a specific valve and oil pathway which can control unlock and lock of the locking pin. This presumably allows more...