M103 Engine Rattle Noise on Startup

[cleavster]

Hi Folks,

When starting the car, I heard a rattling noise for a few seconds and it goes away when the oil pressure goes up. This happened only twice so far when the car sat overnight. Last night, I heard the same noise when I turned off the motor and this only happened once.

For the engine noise, is this the timing chain? Is the first step to change the timing chain tensioner to see if that fixes the problem?

Thanks, Clive