Hi guys, noob here

Got a really frustrating fault with the other halfs zs

Petrol 1.6, 62k

A few times a week it struggles to start. Symptom is it'll fire, but feels like it runs in three, if you give it some throttle it cut out. Then if you go to start it again 99% of the time it'll fire no problems. It runs ok and never cuts out whilst driving.

So far I've replaced the plugs leads and coil pack. I've checked the battery which has failed its discharge as sometimes it sounds lazy whilst cranking, so I'm replacing that later today. Is there anything else to replace/check?

Pressure regulator/ cts

Cheers

Gaz.