Renault Megane Diesel 1.5 dci does not start !!!!!

Hello, I ask you for
a brother of mine has a megane 1.5 dci and starts when you want, sometimes if other times not, whether hot or cold, we have changed heaters and nothing, we have checked and the cylinder arrives Gasoil and the heaters warm up. It gives the sensation as and trying to start loses the starting point of injection, because when it starts it does it wonderfully without hesitation.

Could you help me ??? THANK YOU

These engines are very much fail the connectors of the injection system, especially the ramp pressure sensor

Hello Zamarro

, do you mean the pressure ramp sensor, would you know how to try if it is okay? I measure the resistance with a multimeter? What values ​​should it give?

Thanks for your help