skibum

I'm a complete novice when it comes to Subaru's. I've just bought a Impreza WRX on an 06 plate. It is running a little rough when under acceleration. At lower revs if I accelerate hard it stutters a little before pulling ok. Just had the air filter changed and I'm thinking about changing the plugs. I'm wondering if changing the plugs will help this. The car has done 85000 and not sure when the plugs were changes last.
I have a guide to help me do it but I'm not sure which plugs to go for?
Thanks

JohnD

iTrader: (5)

NGK PFR6B are the standard fit.
From what you say, I would advise a diagnostics check to confirm the correct function of sensors such as mass air flow, lambda etc.

JohnD

Butty

iTrader: (2)

Is it a 2.5 litre engine?
Plugs for those are long nose ILRF6B

skibum

thanks for replying, it is the 2.5

JohnD

iTrader: (5)

My error - I was assuming the 2ltr

JohnD

Butty

iTrader: (2)

Could have been a carry over 2.0 into 2006, so I didn't want to flame you immediately before checking the facts