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Misfire cylinder 3- p0303 options?



  A45 AMG 406BHP
Hi

The 182 received the following fault
Po303- misfire on cylinder 3

Sounds like its running on three
it runs but badly

I removed spark plugs to find the 2nd n third plug wet ( petrol)

I think it's coilpack- do coilpack a fail in two or single?

Am I safe to turn over the engine to check spark with inlet off?( don't want to mess up other sensors)
 
  Clio 172 Cup, Volvo
Just out of interest my 172 had a misfire on no.2, took it to Fred at BTM who diagnosed plug leads. Try them first.
 
  Megane r26
Could be the coil pack cause cylinders 2 and 3 do spark together (due to wasted spark ignition) but first off try sparking it off the inlet, swap leads to just to makesure its not them
 
  A45 AMG 406BHP
Sounds like a motorbike- misfire on cylinder

182
originally got fault code po303 misfire on cyc 3

Changed
plugs, leads, coiloack new

Idles level but sounds like its running on two/ three

Now I'm getting misfire on cyc 2

What is going on?
What else should I try? Injectors?
Ideas?
Cheers
 

jenic

ClioSport Club Member
  981 Cayman
Re: Sounds like a motorbike- misfire on cylinder

Injector?

Get it on a decent code reader before spending more.
 
  A45 AMG 406BHP
Re: Sounds like a motorbike- misfire on cylinder

I haven't got a decent one
only BMW one which won't work

I've changed injector from cylinder 4 to 3
and still misfire on 3
I will stick the injectors in cups and turn it over to make sure there all firing at same.
 

jenic

ClioSport Club Member
  981 Cayman
Re: Sounds like a motorbike- misfire on cylinder

Pay someone to get it on a decent code reader then, for the sake of £30 at a specialist it would be well worth it.

Try diamond motors.
 
  A45 AMG 406BHP
Re: Sounds like a motorbike- misfire on cylinder

Not insured, I'll have to ask around.

After injectors, could it be lambda precat one?
Cheers.
 


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