Paul Henderson wrote:

> Apologies for something that should be obvious, but could someone tell
> me which cylinder is #1 and which is #4 on a watercooled 1984 Vanagon?

It is the same positions as on all air-cooled boxers from VW. That is: #1
= front right, #2 = rear right, #3 = front left, #4 = rear left. Remember,
left is left, and front is front, even if you lean over the rear seat
looking at the engine. All is considered from the drivers position.

PerL
Bug, Bus 'n 'Back