18-02-15, 05:54 PM
(16-02-15, 06:37 PM)wildchild74 link Wrote:Dont know if it means anything but there is a slight backfire/popping noise but it has got a race can on
Gaz
Since the fuel going to cylinder 4 isn't getting burnt in the cylinder it is burning when it meets the hot gases from the other cylinders where the pipes join giving the backfire/popping noises.
Have you tried swapping the spark plug from cylinder 4 to another cylinder to check it's not just a duff plug?