Originally Posted by
RichieST
I'd be checking for any leaks on the inlet side first, adjusting the idle screw manually could just be masking a fault.
This was my thought as I had the same issue on my mk2 fiesta with the 2.0 zetec. It had a leaky throttle body gasket. So may try a bit of brake cleaner around the inlet to see if that pin points the leak.
The car has only one previous owner I'm the second keeper.
