i just re-did the timing on dohc zc engine. it seems to be running smooth.. i can rev it lightly, but if i really press it, it spits pops and sputters. any input i am pretty sure timing is exact on. thank you for input.

 

Could be air pockets in your coolant.
The ecu has a sensor that sends a signal to it so judging by the temp it will know how much fuel to give.

But it can be the o2 sensor too. As well as ,any things.

 

i am getting code 1 and 9 i will try to bleed cooling system today see if that works. i am pretty sure timing is dead on.

 

my idle is also a bit sparatic jumps up n down a little when started and running at idles

 

Have you looked up what the codes mean?

 

oxygen code 1 and code 9 no. 1 cylinder position ... the thing in front of the distributor on zc idk what is called but is a sensor i do not believe it is hooked up right.