Help with new beetle running issue

[Khare]

Need some help sourcing a problem with a W reg new beetle. Car drives, but misfires and drives "lumpy".

Scanned with vagcom and these came up

6 Faults Found:
17536 - Fuel Trim: Bank 1 (Mult): System too Lean
        P1128 - 35-00 - -
16556 - Fuel Trim: System Too Rich: Bank 1
        P0172 - 35-00 - -
16684 - Random/Multiple Cylinder Misfire Detected
        P0300 - 35-00 - -
16687 - Cylinder 3 Misfire Detected
        P0303 - 35-00 - -
16684 - Random/Multiple Cylinder Misfire Detected
        P0300 - 35-10 - - - Intermittent
16687 - Cylinder 3 Misfire Detected
        P0303 - 35-10 - - - Intermittent

According to rosstechwiki

17536/P1128/004392 - Fuel Trim; Bank 1 (Mult): System too Lean

Possible Symptoms
Malfunction Indicator Light (MIL) active
Possible Causes
Mass Air Flow (MAF) Sensor faulty
Oxygen Sensor Control faulty
Oxygen Sensor(s) faulty
Fuel Injector(s) faulty
Possible Solutions
Check Mass Air Flow (MAF) Sensor
Check Oxygen Sensor Control
Check Oxygen Sensor(s)
Check Fuel Injector(s)

16556/P0172 - System Too Rich, Bank 1

Possible Symptoms
Irregular behaviour
Possible Causes
Fuel system
Excessive fuel pressure
Leaking or contaminated fuel injectors
Leaking fuel pressure regulator
Low fuel pressure or running out of fuel
Vapor recovery system
Air leaks after the MAF
Vacuum leaks
Improper seated engine oil dipstick
Stuck EGR valve
Oil overfill
Cam timing
Cylinder compression
Exhaust leaks before or near HO2Ss.

Any ideas? How do I check MAF, O2 sensor and injectors separately? I did had a quick look under the bonnet and found and fixed a big old vacuum leak behind the intake manifold, it was a hard plastic pipe which I managed to repair and it's not leaking anymore, car does run smoother but still misfires.

[itavaltalainen]

does it have 4 individual ht coils?

swap them round and see if fault travels

[Khare]

No, single coil pack.

[danny_p]

erm you may have bought the wrong car ....

last time i checked new beetels wernt BIG POWER RWD drifiting machenes,  they arn't skylines ether.

2.0 8V X flow is it ?

[Khare]

erm you may have bought the wrong car ....

last time i checked new beetels wernt BIG POWER RWD drifiting machenes,  they arn't skylines ether.

2.0 8V X flow is it ?

Not my car, lady friend's. II'm rolling around in a pug 206 1.9d oh yeah 

Yup 2.0 8v X flow.

[Ben@VWH]

First 2 codes suggest an air leak. Other codes suggest an ignition problem (coil, leads, plugs)

[danny_p]

if it misses more when you floor it it more than likley the coil pack , the spark plugs usally get in to some pritty shocking states on these engines as they tend to burn oil and foul the plugs and you have to split the inlet ani to change them iirc so no one ever dose

[Khare]

if it misses more when you floor it it more than likley the coil pack , the spark plugs usally get in to some pritty shocking states on these engines as they tend to burn oil and foul the plugs and you have to split the inlet ani to change them iirc so no one ever dose

It misses on idle, but I do think it is the coil. Splitting the mani to change plugs? Jeez thanks VW!

[Screech16v]

No splitting of the mani needed  my mrs has the same car same engine,absolute oil guzzler,had the random misfire code for months mil light on every so often but started properly missing Monday ,fitted new coil today seems to have done the trick.

[Khare]

Nice one mate, I do think it's the coil to be honest!