Hiace Cold Start Fuel Issue

I have a Hiace, and I had similar symptoms recently. Have you thought about a defective injection valve? It might cause your rough idle.

Interesting. Was your Hiace doing the exact same thing? What did you do to troubleshoot it?

Yes, the symptoms were identical. Because the fuel rail is complex, and it's easy to misdiagnose, I'd suggest a workshop. That's what I did, and they found a bad injector.

Thanks for sharing. I took it to a workshop, and you were spot-on. The repair cost 515€.