Renault Scenic K9K728 Doesn't start!

Hi Ismael,

well today I have tried what you told me about starting stepping on the brake and clutch pedals at the same time and has not worked. I have checked the crankshaft captor that should give 770 ohms and throw a resistance value of 670, although I do not think that is the problem but I sign it to look at the replacement.
Seeing your comment regarding the injection ramp and pressure, I have tested again and although I cannot determine the pressure at the injector, it gives me the feeling that does not take a lot of diesel for the hurters when I release them.
Tomorrow a friend will bring his computer to see what failures the switchboard throws.
For now the captor is pending and the hypothesis of the breakdown in the injection system is taking strength. We will see what this ends, tomorrow more.
The breakdown of that lagoon puts the hair, those intermittent breakdowns that seem more a polytergeits than anything else ...

Hi Ekaitz, (I don't know why two messages come out of mine and the last thing comes out elsewhere ) I have been able to read that you have proven that little fuel comes out when loafers; The fact is that it seems to me that in these systems it cannot be done so because the ramp makes an "pressure accumulator" effect and if you open a corner you do the pressure and do not let it accumulate so that when you open the next one to continue trying it continues with little pressure (I do not know if I explain well), the fact is that this sphere that carries the 1.5 dc is very small (little remnant), if someone does not believe it . This pump carries a temperature collector and a flow actuator that in this case regulates the amount of fuel that enters the high pressure pump opening the step or closing it (electrovalvula) guilty of a low pressure on the ramp if this failure is due to the breakdown of the electrovalve, connector or cable or by not being managed by the ECU (God knows . look. Let's see if you can do the diagnosis and save "all this tinglado" that is mounted with the new technologies .... I already see "that you have" there !!!

Good, we are here again.
I do not have new news at the moment, unless we finally managed to enter the UCE and verify that it had no stored failures and that the injection pressure is correct (the way I did the check was not very orthodox due to lack of means and your explanations are successful Ismael).
It has been tried to start with ether but there has been no way, so I will check again the draft of the distribution and the camshaft key, which have told me that it breaks when the engine loses synchronization.
The crankshaft captor was finally fine and also looked at the diesel filter and do not come out with the diesel, although I will cut it to see it carefully. The EGR has also been reviewed and acts correctly.

We will continue fighting with this Scenic until we are with it!
Thanks for your contributions Ismael, they are very helpful.

Hello again! , the chips told me (I have not seen it yet) that the high pressure bomb generates them and sends them to the ramp and there the lia in the injectors (but I do not think this is). What is rare not to start with Ether or make attempt ... The problem is that you say it does not throw stored codes; If it was bad of synchronism, "the signs of the crankshaft-levas-bomba captors (for cylinder 1) this memorized failure; But it is not others as you say the draft, which may have moved (eg in the crankshaft piñon does not carry a key if I am not mistaken). It would have to look at if the injectors have a pulse in the connectors to flip the engine (so it seems to me, it is as if they did not open). Well, to see where the fault comes out at the end, greetings !!

Very good,
I have continued working on it for a while but I still have no new news because I have had to leave it somewhere on other issues. I return to this vehicle tomorrow to see if I finish it, I will keep you informed. All the best.