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Misfire on cold start
Posted: 09 Oct 2026, 21:43
by Lillythefrenchie2026
I’ve noticed the past few times I’ve started the van after sitting for a while it’s occasionally misfiring on cold start. Once the engine has been running for a few minutes it’s running normally and after driving a while, then turning the engine off and back on it still runs fine.
It’s a 1.9 petrol DG waterboxer, this is my first van so unsure where to start looking.
Any advice is appreciated.
Thanks
Re: Misfire on cold start
Posted: 09 Oct 2026, 23:26
by ajsimmo
It's not unusual for a van that sits for a while between uses for it to run a bit lumpy for a few seconds from cold. It may take a minute or two to smooth out. That's usually just the hydraulic tappets pressurising up so the valves start opening as they should. A little heat in the cylinders helps, as does the heat in the inlet manifold. This makes the fuel atomise/evaporate for a better burn. Vans used daily tend not to behave this way, but run smoothly almost immediately, as you'd expect.
Anyway, nothing to worry about.
Sent from my moto g55 5G using Tapatalk
Re: Misfire on cold start
Posted: 10 Oct 2026, 01:40
by mioba
These engines are agricultural as they come.
its not even winter yet. Wait till then and see how it starts
