Cam timing question

[allencr]

Smooth idle is a little tricky as without a IAC valve the idle is tricky to get right.

IAC = the little hot coolant controlled thingy on the TB?
It's only a semi-controlled air bypass and it doesn't lean it out, so it has nothing to do with a smooth idle, only its RPM when cold.
Move the distib. for its highest & smoothest, then retard it a bit to be safe & bring the RPM down 50-100.

[cat007]

IAC = the little hot coolant controlled thingy on the TB?
It's only a semi-controlled air bypass and it doesn't lean it out, so it has nothing to do with a smooth idle, only its RPM when cold.
Move the distib. for its highest & smoothest, then retard it a bit to be safe & bring the RPM down 50-100.

The little air valve that's activated by the stock ECU - has a stepper motor inside to help control idle speed and stability

But anyway - I'll source a puller and make sure the key way isn't buggered - and try and find another crank pulley and go from there.

[QikStarlie]

Smooth idle is a little tricky as without a IAC valve the idle is tricky to get right.

IAC = the little hot coolant controlled thingy on the TB?
It's only a semi-controlled air bypass and it doesn't lean it out, so it has nothing to do with a smooth idle, only its RPM when cold.
Move the distib. for its highest & smoothest, then retard it a bit to be safe & bring the RPM down 50-100.

how to tune your 4k?
set the base where it should be, then tune via ecu software would be better