Mercedes ML320 Glow Plug Replacement P0670 - MB 2270-4 OBD errors Check Engine CEL

2270-4 "at least one of the glow plugs is not actuated" Hard Start while cold. and check engine light for glow plug controller.
I ran a few tests to see the health of the glow plugs and I determined that it was best to replace all the glow plugs on this OM642 V6 Diesel engine in my dad's Mercedes ML320 CDI.


You can find them on the amazon affiliate in the link below!

https://amzn.to/3Fn8tHT


I spend a lot of time out in the workshop and i am always fixing, scrapping and recycling things to try to make this world a better place and keep the 'Do it yourself" spirit alive.
I am a computer Network Engineer by profession but my parents and grand parents are Plumbers, engineers, and Teachers so I hope to pass the same Can_Do onto my kids, and maybe some people on youtube.