Won’t start

[Mstroud86]

Hi folks. I’ve got a n47 123d. It won’t start. I’ll gibe

 you back story on this problem. Was out on a Saturday night. Driving normally. Parked it up. Next day went out to go to Asda. Would not start but sometimes if I was sitting in the car low battery warning light came on. So when it didn’t start bought a new battery. It’s a 90amp 900 cca battery. Still wouldn’t start. So got a friend to come diagnose it came up with cylinder 1 and 2 and 4. Needing glow plugs replaced. So they was replaced. Still not staring. Friend sprayed easy start to see if it would start with that. Nope still no joy. So today I replaced the glow plug module. Ones again nothing. The car is sitting at 137000 miles. My worry is the chain has snapped but there was no symptoms of it on its way. No chain slap nothing I’ve got 2 videos one before glow plugs being replaced and one after. So now I’m looking for advice 

[Greydog]

Morning Martin

I take it you have checked fuel pumps are operating, fuel pump relay is OK? When was the Fuel filter last changed?

I think you should also have a charge air pressure sensor in the inlet manifold.

I don't know what reader your friend used but if it wasn't BMW specific it may not see some of the many control units 

Dave

[Mstroud86]

1 hour ago, Greydog said:

Morning Martin

I take it you have checked fuel pumps are operating, fuel pump relay is OK? When was the Fuel filter last changed?

I think you should also have a charge air pressure sensor in the inlet manifold.

I don't know what reader your friend used but if it wasn't BMW specific it may not see some of the many control units 

Dave

No wasn’t a bmw Pacific