ckp timing vortec 5.7

[achidotcom]

how do i check my timing?
i know i need to be +or- 3 degrees, but how do i check it?

[MICK]

Find in the Scan tool the pid: Camshaft Position Retard (Vortec).

Log this pid and read it's data.

You must be at certain operating conditions, like warm engine ect.

I think you need to set it at a certain engine RPM.

Check it out while you drive and you will soon see if it is out and by how much.

I think this is what your after?

Cheers

Mick

[hquick]

You need to log GM.CMPRET.
Warm the car up.
Start the scan tool and rev to +1200 rpm.
Check reading (needs to be +/- 2.0
If not correct...loosen dizzy hold down bolt, turn slightly and rev again to 1200rpm and check.
Everytime you change the setting you need to rev to 1200+ to acquire a new reading.
Once set...tighten hold down bolt....DONE!

[achidotcom]

thanks guys but i still cant find the file GM.CMPRET in my pid list

[hquick]

Which version of EFILive are you running?
You might need to update if you haven't already
Look under 'conditions' in the PID list.

[achidotcom]

i have v7.4

[hquick]

I think it was added to 7.5. I have 7.5.3 and it's in there

[achidotcom]

downloading now thanks again