Technical Multipla start difficult when engine is hot

[RadioMultipla]

Hello,

My Fiat Multipla start fine when cold but is difficult to start when the engine is warm.
Who has an idea what this may be.
I think the glow plugs are good but do not work when the engine is warm.
Can that be?

 

[BikeDoc]

Sounds like the Crank sensor on the way out.
My old one did it occasionally, would crank over OK but not start, then if left for 15-20 mins to cool down a bit, would start fine.

Easy enough job, sensor is cheap, and easy to get to, but connection plug is a pain.
Easy enough to reach, but you can only get one hand to it, and it's a two-handed job to disconnect/connect :bang: