MX4
Well-known member
Hi all,
I have a miss on number 4 cylinder at idle. So far I have replaced the spark plugs (NGK BPR7ES @ 28thou) and the coil pack. Next move will be the spark plug leads. But in the meantime I wanted to check if anyone had any other ideas on what could cause this.
I would of thought that, if a cylinder lost spark, it would also lose spark on the other cylinder from the same coil (so 1 & 4). But the car is only missing on cylinder number 4 which is confusing.
Any advice appreciated.
Ryan
I have a miss on number 4 cylinder at idle. So far I have replaced the spark plugs (NGK BPR7ES @ 28thou) and the coil pack. Next move will be the spark plug leads. But in the meantime I wanted to check if anyone had any other ideas on what could cause this.
I would of thought that, if a cylinder lost spark, it would also lose spark on the other cylinder from the same coil (so 1 & 4). But the car is only missing on cylinder number 4 which is confusing.
Any advice appreciated.
Ryan