Hi all,

Just bought a VR6 which is nice. Have an issue with the engine though and wondering if someone can help me out? At around 1800rpm and between 5500-6000rpm it misfires, anywhere in between is usually smooth.
However, sometimes it misfires through the whole rev range and backfires, quite cringeworthy. I'm guessing it could be dirty spark plugs or so, but it seems quite a task to pull them out just to check. Is there a common fault elsewhere, such as the airflow meter or hosing in between? Seems a little odd at how inconsistent it is. Any help would be much appreciated. Cheers