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Misfiring

Gordon VZ ute

New Member
Joined
Oct 28, 2020
Messages
20
Reaction score
1
Points
3
Age
62
Location
Malanda QLD
Members Ride
VZ Ute commodore
My SVZ has started to periodically misfire on fourth cylinder, when it happens it throws to codes PO304 & PO300. The weird thing is that when I pull over and stop and then restart engine it runs fine again, although it does seem to have a hiccup when idling whith A/C on. Has been suggested that it could be the coil, anyone have any thoughts before I start spending money. It happened couple of days ago and it was 4 weeks ago when it first did it.
 
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