Engine noise and no Power

Good day Gents and Ladies, a friend of mine has a problem with his Outlander.
The engine has developed a noise as if it's pinging.
We checked the valve timing and it's spot on accurate. The is no fault code.
He has taken it to the local Mitsubishi Dealership and they could not diagnose the fault with their Diagnostic Tool.
The engine no starts with 4G 94523xxx
Can Anyone help please?
Regards Chris.