Odd Noise

[canadave]

I have an 06 lbz, truck is great but I notice one cylinder seems to have what sounds like fuel knock. It is worse when the engine is cold and on high idle. You also hear it under heavy load. It is not the infamous tick (I have that too :rolleyes: ) and engine runs fine smooth and no smoke. Is this normal for one cylinder to sound different?

[More Power]

Might be worth having the fuel-rates checked for each cylinder. If one cyl is outside the norm, it'll show up.

Jim