I just went thu this  

trans
3   1
4   2
rear

VWNUT@smus.bc.ca wrote:
> 
> A currently off-list member asked me about the cylinder numbering on
> the w/b, which is of course the same as all VW boxers, right?
> 
> So, wanting to be certain about this, I checked the Bentley. It gives
> the firing order as 1-4-3-2 (I think, same as the inline 4s, right),
> but nowhere could I find reference to what cylinder is where.
> 
> I think it's 1-3 & 2-4 for left & right side, front to rear, but just
> need to know for sure.
> 
> Thanks.
> 
> ps: For you old hands who can adjust valves in your sleep, just
> consider this humurous Friday content, ok?
> 
> Shawn Wright (VWnut@smus.bc.ca)
> '88 Westy (336k)
> '85 Jetta TD (358k)
> '69 Wife
> '97 1st child (! :)