Literally me frantically reading through web forums and a Chilton's manual trying to figure out how to change the lower intake manifold gasket on a mid-90's Mopar 3.5L in my old Chrysler, because ODB codes kept flagging a misfiring cylinder in a spot that was known to the Intrepid owner community to be prone to the gasket rotting out and corroding the manifold mounting bolts until the lower intake wouldn't seal against the block anymore, hence the misfires. It would also seep coolant into places where it really wasn't supposed to be.

That devolved into buying lots of fun shit, including new bolts, a bolt removal kit for getting one of the old ones out, a torque wrench, storage containers for all of the antifreeze that I had to drain out, and so on. I managed to do it, and used no duct tape in the process, though I think I might have had some extra-wide painter's tape covering the holes in the block at one point so that I could keep metal shavings from that stuck bolt out of there... The surprising part is that the engine ran fine for another 8 or 9 years after that.

Then again, I grew up around shadetree mechanics, even though I was never really a "car guy."