Ajusting Idle Screw, Now Not Running Right - HELP

[xrrich]

Hi,

I have recently changed my hall sender this meaning timing the car up.
After that the car was running sweet, Except the revs were up to almost 2000, and if not they were bouncing from 1000 to 2000
So i did some research and thought it must be the idle screw.

I warmed the car up, removed the blue temp plug and adjusted till the revs with 1000.
All Sounded fine but when i restarted it it was juddering and sounding like the pistons were firing at the wrong times.

Do you need to set the timing after fiddling with the idle screw?

What could my problem be?
It feels exaclty the same when i refitted my dizzy and it needed timing.

Thanks
Rich

[hayesey]

altering the idle has no effect on the timing but are you totally sure the timing is correct?

The idle should be higher than 1000rpm with the blue temp sensor unplugged, I've you've set it to 1000rpm with it unplugged it'll be miles too low normally.  I find it's a trial and error job to get it just right.

[xrrich]

yeah timing was perfect, ill have to get a timing gun again to check, but was running fine until i ajusted the idle screw.
Strange
It was ok this morning when i ran it from cold, but then when i try and restart it when its warm it plays up