Before you go monkeying around with the glow plugs on this thing, read up on them. They can be extremely difficult to remove, leaving them snapped off in the head. My adventure with that lead to a teardown and the head going to the machine shop.

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Rick Miley
2014 Tesla Model S
2018 Tesla Model 3
2017 Nissan LEAF
Former MB: 99 E300, 86 190E 2.3, 87 300E, 80 240D, 82 204D Euro
Chain Elongation References