Fault codes...

[rhunter203]

Ha s anyone had the following fault codes:

P0300 Random Multiple cylinder:
Misfire detected

P0304 Cylinder 4:Misfire Detected

Cheers
Rob

[rtd]

Ha s anyone had the following fault codes:

P0300 Random Multiple cylinder:
Misfire detected

P0304 Cylinder 4:Misfire Detected

Cheers
Rob

check this link rob;

http://wiki.ross-tech.com/index.php/16684/P0300/000768

[TopBear]

Yep, I had that regularly, just before my cams needed replacing. It could be a multitude of things causing this though. Duff coil pack(s), amplifiers, injectors, MAF.........

You should be seeing more than 1 cylinder misfire (in your case cyclinder 4) for a 'Random\Multiple' DTC code though

[Nige_RS4]

I saw that on my RS - plugs needed tightening (seems to be quite a common thing!)

[rhunter203]

Oh dear lets hope its one of the cheaper options...

[TopBear]

If you measure and log blocks 15 and 16, you can 'watch' which cylinders are misfiring, and at what revs they misfire, to help you narrow down the focus a bit.

[rhunter203]

If you measure and log blocks 15 and 16, you can 'watch' which cylinders are misfiring, and at what revs they misfire, to help you narrow down the focus a bit.

Thanks. The main problem I have is the car has only misfired once!

[TopBear]

If you measure and log blocks 15 and 16, you can 'watch' which cylinders are misfiring, and at what revs they misfire, to help you narrow down the focus a bit.

Thanks. The main problem I have is the car has only misfired once!

I take that to mean it's only logged misfires once as DTC's, and you've cleared them and they never came back?

Perhaps poor quality fuel is to blame then?

[rhunter203]

The misfire happened after I gave the car full beans from cold – I know this is a no no but I pulled out to late. The car stuttered
then the engine management light came on, I immediately stopped the car and turned off the engine, I left it for 5 mins, started
up and drove very gingerly back home – the light has never come back on nor has the car misfired again.

I haven't cleared the codes yet - booked into MRC for Thursday and thought it best if I leave well alone!