2.0 hdi xantia won't fire

[citroenxm]

Have you checked the Fly wheel sensor ontop of the gearbox???

Like I said earlyer......!

[taffy]

Not really...but got rev count workin...jus tried easy start it fired but won't run....I think its the hp pump again cause I loosen union from pump to rail and its jus dribblein

[citroenxm]

Rev counter on HDi doesnt work from the Crank sensor.. Its direct from the ECU..

The ECU needs the Crank Sensor, cam Sensor, fuel pressure sensor ALL to be working to start. Crank sensor could WELL be full or covered in s**t.

[taffy]

Ah right...what about the fuel pressure...shouldn it be squirtin everywhere out of thw bk of pump?

[citroenxm]

It should run steady out the back of the pump NOT at high pressure...

What happens then is the steady flow pressurises the rail up for the injectors.. It doesn't fire the fuel like an Old XUD Roatry Pump does..

[taffy]

ok well I'll try that morrow...if I clean it an atill don work how u test for pulse with multimeter? Thanks for time mate

[citroenxm]

That I dont know. As I said in first of my entries there isn't that many sensors, and they are rather reliable.

Having the car on the lexia and looking at the live parmeters, while spinning the engine over you can see All the sensors that are working from the info on the screen. Otherwise its chasing the few till you get the right one..

[taffy]

taken crank sensor out and it had a lol nipple of dirt on it...gona charge bat back up an try it morrow

[taffy]

Well done crank sensor fuel pressure sensor cam sensor no diff....jus taken fuel pump out of tank and the filter has a lot of crap in it...still pumps fuel but could this be it I wonder

[taffy]

no still same....checked voltage to crank sensor both pins read 2.5 v checked both wire toecu both finw checked ohms on sensor wen crankin showin 20-30 ohms checked cam sensor 5v 12v and signal wire checked to ecu ok...hav not mesured signal from either yet

[taffy]

7v at heater plugs

[taffy]

6.5v at both injector wires

[CitroJim]

Taffy, you really need to see about a Lexia. There’s a good chance it'll save you hours and hours of faffing around. There must be someone in the locality that has one surely?

[taffy]

ah I know mate I really do need one but I'm so broke I couldn offer anything for the help

[taffy]

used fault code reader no faults...