Read through all other posts with the same Topic Heading and none of the symptoms match what I am experiencing.
I own a 2005 Kun26R with a D4D engine, second owner, 210K on the clock.
When I turn the ignition to on, engine stationary, immediately I hear a rattle at rear of the engine bay on the drivers side. Sound appears like it is relay or control valve chatter.
Anyone give me a hint on what I should be looking at to rectify the problem before I start pulling things to bits. There does not appear to be a degradation in vehicle performance.