Iddling problem?

Mate I've had the same problem,changed plugs leads and coil pack,and car was still like it.my mate came n pluged it in yesterday and cylinder 4 injecter was shown fault.easyest way to check which injecter it is is to keep the car tickn over at a grand,and unplug each injector one at a time and outing it back on.all the working injecters will missfire when removed the one that's down won't.job dun hope this helps

gary splitter
March 2016

There is a lack of information you have given as in Model/Year etc, on modern motors there are no adjustments you can make unless you have the correct computer/code reader,start with the basics and make sure your filters and servicing is up to date, other than that get it onto a code reader for a look at fault codes.

cdc
March 2016