As above i just put a new engine in a s2 and it does start and run fine but if not been started for a day or 2 it sometimes takes a while to start.

I also noticed that there is a clicking noise from metering unit when you switch ignition on and the pump kicks in.

I'm thinking its trapped air but unsre , anyone heard of this before do i need to bleed it or something.

Thanks.

 

with the starting problem it's probibly the cold start valve leaking get a new one or pull the blue plug off thats what iv done with mine and it starts perfect now

and the clicking by the meter unit is the amel valve mine does the same

 

Ye niceone mate i had a little test drive and it was almost like i hit a boost limit so i unpluged the amal valve and now its runs fine , is this ok to be unplugged. Ye i noticed it started aalot better with the 5th injector unplugged.