Slow to start when warm. She's a mystery to me, Roy Orbison 1988
2005 XF Coupe, 50 000 km (30 000miles)
New battery
No check engine light
BlueDriver v2,6 (love it) no codes, no primary codes
Starts on the first turn of the key when cold
Starter turning the engine over plenty fast
New, RCM yesterday, RockAuto
No stumbles, runs like a thoroughbred on the highway

Need the collective wisdom ot this forum. All past experiences and ideas appreciated.

TY Rupert