hi all, I own a ba xr8 ute 6 speed man, I have a ticking noise when the motor warms up a bit, no noise when the motor is first started and cold, I have pulled the serpentine belt off and noise still there, then tried pulling/disconnected each injector and the noise is still there, was thinking timing tensioner but it’s not a rattle it’s a ticing noise and comes on about 2500 rpm, any help would be great as 4 different mechanics tell me 4 different things
cheers

hey mate how did you go with this, i too have a ba xr8 in tassie (launie) and have the exact same tick once the engine is warm over 2500rpm, its not chain tensioner noise it appears to be lifters or cam or somthing, did you manage to fix your xr8 up?

Hi mate havent pulled it down, but it is looking like a cracked piston

where did you get that diagnosis from?

are you able to get a small camera with a light on it to try visually inspect the pistons before pullin stuff apart?