Thanks for the video. With the variation of signal timing, on initial crank I was thinking it could be related to oil pressure building up during the cranking. Something to do with chain slack, chain tensioners or the phasers. I don’t know the timing chain design so am just speculating. Thanks again for the post
Excellent video Sadel! If you had check it at idle you would not have noticed that ah! I am still thinking what is causing that! I'll check the timing chain layout. I'll wait for part 2! Thank you for sharing brother!
What will make cam to cam to be on time but ckp off time 7 teeth, how many degress of crank rotation are this . I thinking 🤔 of some one removed the harmonic balancere and did not used the special tools to do proper timing, or ckp sensor replacement without the special tools . What is the history of the vehicle?
It is due to the cam phaser not locked into it's at stop position, so when cranking up and starts to rotate it kind of "bounces" until enough oil psi fills it and holds it steady. That's why you see it in the cam waveform changing width.
Saw something similar to that on an SMA video, the phaser/cam assembly was 'jumping' around when cranking the engine, resulting in unusual scope patterns
![I Found This Broken Bolt in the Crankcase of my Cheap Range Rover’s Engine! [Part 3]](/img/n.gif)
Thanks 👍 greta demostración
Thanks for the video. With the variation of signal timing, on initial crank I was thinking it could be related to oil pressure building up during the cranking. Something to do with chain slack, chain tensioners or the phasers. I don’t know the timing chain design so am just speculating. Thanks again for the post
Great point!
Excellent video Sadel! If you had check it at idle you would not have noticed that ah! I am still thinking what is causing that! I'll check the timing chain layout. I'll wait for part 2! Thank you for sharing brother!
yeah pretty crazy!
Thanks for this wonderful video
Glad you liked it!
What will make cam to cam to be on time but ckp off time 7 teeth, how many degress of crank rotation are this .
I thinking 🤔 of some one removed the harmonic balancere and did not used the special tools to do proper timing, or ckp sensor replacement without the special tools .
What is the history of the vehicle?
Very interesting…….I’m curious as to what you find out (maybe it’s aftermarket cam sensor?).
hoping to get the job and open it up
Thanks for posting. Where did you get those piercing probes from? Power Probe?
they are power probe brand
I can understand difference in timing between the cams when VVT is in operation, but cannot explain why and how the signal width changes
It is due to the cam phaser not locked into it's at stop position, so when cranking up and starts to rotate it kind of "bounces" until enough oil psi fills it and holds it steady. That's why you see it in the cam waveform changing width.
Thanks for clarification.
👍🏾👍🏾
I assume this is the Ford engined example and not the later JLR engine?
Yes, I believe the ecoboost type
Correct, the ecopoop got replaced around 2017/18 with the JLR 2.0 ingenium trashpile
What would cause the skinny captures? Tone ring issues?
I would more think an out of spec aftermarket cam sensor.
@@stevepark5504 he calling timing job so it’s not a sensor but it is interesting how it’s being picked pick up. Must be expanding when hot.
Saw something similar to that on an SMA video, the phaser/cam assembly was 'jumping' around when cranking the engine, resulting in unusual scope patterns
@@mrblonde2013 that’s what I figured. Saems to fit the diag, hopefully sadel gets the job
I still don't have an exact answer to be honest.