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What are the cylinder numbers on a air cool VW motor?

Air-cooled Volkswagen engines are horizontally opposed, meaning the cylinders are arranged on opposite sides of the crankshaft. This configuration is often referred to as a "boxer" engine.

Here's how the cylinders are numbered:

* 4-cylinder engines:

* #1 cylinder: On the right side (as viewed from the front of the car) and closest to the front.

* #2 cylinder: On the left side and closest to the front.

* #3 cylinder: On the left side and furthest from the front.

* #4 cylinder: On the right side and furthest from the front.

* 6-cylinder engines:

* #1 cylinder: Right side, closest to the front.

* #2 cylinder: Left side, closest to the front.

* #3 cylinder: Left side, middle.

* #4 cylinder: Right side, middle.

* #5 cylinder: Right side, furthest from the front.

* #6 cylinder: Left side, furthest from the front.

Important Note: This numbering system is consistent across most air-cooled VW models, but it's always a good idea to double-check your specific engine using a repair manual or online resources for your year and model.