Originally posted by cowgod:
The Z engine code is the bi-fuel (i.e., can run on both natural gas and gasoline) Zetec. Dunno if its SOHC or DOHC, but I'd guess DOHC, or it really wouldn't be a Zetec anymore.
I've seen two of those natural gas Tours, and under the hood I saw no differences except the fuel rail. I think it's still DOHC.
In fact, I have a couple of pictures of the engine bay of a natural gas Tour, from a year ago in Seattle (which uses these cars in its city government fleet, I think):
I also saw an electric Ranger pickup there.
