KIA Carens starting problem

My KIA Carens has been difficult to start. It usually takes at least 10 seconds when cold and around eight seconds when hot. Had a new battery and fuel filter fitted, but the problem persists. Any idea what the fault could be?

Asked on 20 July 2016 by Gary Davies

Answered by Honest John
The most likely reason is an airleak into the fuel system.
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