Hi folks, looking for a bit of advice please regarding the daughters 2012 focus, it's just developed  a hard knock which I'm suspecting is fuel knock but no excess smoke and running ruff as a bag of nails I noticed one of the injector leak off pipes was leaking so fixed that but still the same

Is this more serious or maybe number 4 injector has packed up and the others can't keep up

Here's a list of the codes u pulled

P02CD cylinder 1 fuel learning offset at max
P02D1cylinder 3 fuel learning offset at max
P02CF cylinder 2 fuel learning offset at max
P1303 calibration  fault
P2291 injector control pressure too low, engine cranking

 

Here's a video of it 

 

 

Thanks in advice

Well I've got no idea !!!! 🤔

I'd be very surprised if @TomsFocus couldn't help identify whats going on. How many miles has the engine done ?

Sounds like a dead cylinder, so could be either a clogged injector (I'd guess cylinder 4) or clogged injector feed pipe

11 hours ago, unofix said:

I'd be very surprised if @TomsFocus couldn't help identify whats going on.

Prepare to be surprised. 🤔

P2291 can be as simple as a clogged fuel filter.  If that hasn't been changed recently, it's worth doing as it's fairly cheap and easy.  It could also be because of a small leak on the low pressure side, allowing fuel to drain back to the tank overnight.  Or the fuel pressure regulator, or even a weak high pressure pump, though they're not common on this engine.

P1303 is for EGR calibration (assuming this is from Ford specific diags such as Forscan).  If the EGR is stuck open there won't be enough oxygen to burn all the fuel completely.  But that should be leaving some black/grey exhaust smoke.  Unless it's being masked by the DPF.

I don't generally worry about the injector learning offset codes, I'm yet to read an 8v 1.6 TDCI without any of those codes present!  Mine was only 6 years old/42k miles when it was throwing those codes.  The injectors are the weak point on this engine though, so on balance of probability, it is likely to be one or more injectors failing.  However, it is odd there's no fault code for a dead injector or injector loom fault.