I have never heard that on a start. I am no mechanic but the fact you say it stalls would indicate either a fuel problem or spark problem. I think a spark problem would be evident the entire time the engine is on. It’s likely some sort of fuel problem maybe a pump that’s close to failure since it’s hard to find a pattern to it. I would think this video to SA would be enough for a mechanic to start to diagnose it though.
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