Posted by andy pethigAndrew Pethig
on September 30, 2016, 5:19 pm, in reply to "Vauxhall Corsa 1.2 Z12XEP 2006 - Hunting at idle #"
low engine vacuum can also be caused by restricted exhaust, also late valve timing, are you sure that the timing chain has not streched??
have you checked if there is vacuum present in the crank case put your vacuum gauge in place of the dip stick.
what are your fuel trims at idle ??
