I'd want to get Applejack's opinion on this one. Twilight would no doubt have an encyclopedic knowledge of what the manuals say, but Applejack's got the first-hoof knowledge that comes from keeping one of these things running way past its expected lifetime under harsh orchard conditions.

As someone who has played a lot of Car Mechanic Simulator 2015, I agree.

If the manifold was ripped out of the block by something catching the exhaust pipe then sure. There wasn't much meat on those Civic engines, after all. You could sneeze wrong and end up warping the head.

They've always been there. You've only recently become able to see them.

This means you've been infected with the Brony variant of the Pathowogen. Seek medical help immediately.

Because Lemmyshitpost is the new r/tf2 /j