spark knock at 4k rpm

[DB4MX5]

my 2013 started something weird .. using 93 octane it sparks knocks bad at 4k therefore i put a scan gage on it and discovered that the timing was going to 50 degrees,,, yes true
lucky it doesn't happen all the time,, usually the timing comes down at 4500 and to normal but its almost shuts down at 4k when it happens

anyone see this?

[kung fu jesus]

Don't know these cars, but holy cow! Bad sensor(s)?

[DB4MX5]

Don't know these cars, but holy cow! Bad sensor(s)?

at least your replied kfj

[kung fu jesus]

:)

Trying to see if it might garner more views. Seriously, 50 degrees of timing is a_lot. Makes me wonder if the sensors controlling ignition timing are seeing things correctly. Either way, I hope it's an easy fix!

[DB4MX5]

:)

Trying to see if it might garner more views. Seriously, 50 degrees of timing is a_lot. Makes me wonder if the sensors controlling ignition timing are seeing things correctly. Either way, I hope it's an easy fix!

update, still got spark knock but;;; i was running 10-30 m1 and i switched to 0-30 and now i dont see the 50 deg advance,,,, therefore i must think that the vvt was out of line,,, however i did not see a mil light,, but may not have got one. just saying