Citroen DS4 has no spark

[Jack spanner]

Good day

Kindly assist me , I have a citroen ds4 1.6 thp sport ,the car does crank when i turn the key and there is pressure on the fuel rail but there is no spark on the coils ,i changed my crank sensor but still the engine just turns but it doesn't spark kindly assist me as i have just rebuilt the engine it costed me a a fortune and i just hope to see the car starts! New timing chain bearing kit ,piston rings, bearings and all new seals .

[mickthemaverick]

What year, engine and gearbox is the car? as members will need to know to look up things. If you can post the RPO number found on the tyre pressure sticker it may help. Good luck.

[PaulC5]

Have you checked if the key is being recognised by the immobiliser ? Leave it in the ignition and open the driver's door - most cars give a warning message but if it is not recognised you may not get one.

[windy1603]

Did you remove the flywheel as part of the rebuild as the crank sensor ring is mounted behind it, you would not be the first person to forget to refit it or plug sensor in as its tucked down at the rear or the engine

[wheeler]

Can you seen engine RPM on live data?
Do you know if you are getting a switching signal at the injectors?
Was it running immediately before the engine rebuild?

[Jack spanner]

Good day

I managed to do some diagnostics on the car , the engine didn't have any compression i checked the fuses in the car and the shunt fuse was on Parc ! I changed switched it to client ,car key was working fine, crank sensor was working fine but still no spark .

[PaulC5]

Did the engine run before you did all the recent work on it ? If you delete the fault codes do they all come back ?

[Jack spanner]

Yes the engine did run before ! I did clear the codes and they all came back.

[PaulC5]

Possibly some wiring is not connected back or the engine timing is not right.
Have you tried something like easy start to eliminate fuel problems as a fault ?
If convinced the spark plugs are not getting power then you could try anther coil pack after checking its wiring is in good order.