Ok mate will do, thought the pcv was more high pitch sound? I had someone mention maybe the turbo? And all videos I've seen about knackered turbos are all winey noises etc this sounds like a blow?
Haven't had it long tbf and has been serviced well but dont think the spark plugs/coils been done in last 2 years possibly.
But that doesn't quite explain the vac/air leak that can hear.
You’ve got a mix of rich-running (P0172), EVAP purge flow issues (P0441), multiple misfires (P0303/P0304), and an intake air system leak (P2279). All of those together match your symptoms almost perfectly.
On these engines a failed PCV can cause a blowing / hissing noise, rough idle, unstable fuel trims, and misfires exactly what you’re describing.
A failing turbo usually gives whine/siren noises and oil consumption/smoke. Your codes don’t point to boost control problems, over/underboost, or turbo vane issues so I’d put the turbo low on the list.
An intake/vacuum leak will cause the ECU to dump more fuel to compensate, which triggers rich codes and misfires.
The “blowing” sound you hear on throttle lift could absolutely be a leak opening/closing under vacuum.
Plugs and coils could contribute, but they don’t explain the intake leak or purge flow fault.
So they might need doing, but they’re probably not the root cause.
If this were my car, the order I’d check would be:
1: PCV valve and its hoses (very common failure point, and your symptoms match).
2: Intake tract for leaks especially:
- PCV hose
- Intake manifold gasket
- Brake booster hose
- EVAP purge valve line
3: EVAP purge valve (P0441)
4: Then do Sparks and coils after the leak is sorted if they are needed.
Sort the air leak and PCV first those two alone can cause 90% of what you're experiencing.
