Should be located on the firewall on the drivers side of the car. It's below the brake master cylinder and may be easier to access with the tire off and the fender liner removed.
yes
The filter should be located on the fire wall behind the transmission.
no years to far apart
according to Gates.com the answer is no
It could be several things, but first I'd change the fuel filter, possibly drain the tank if there is alot contaminants in it. On_mitch
it very well could be a fuel issue like a bad fuel filter or a clogged sock,bad fuel pump if you replace the pump always replace the filter
In the fuel tank
Fuel injection.
replace it or tighten it
Take off the screws that hold it on?
The 1989-94 Geo Metro is the same car as a Suzuki Swift or the Pontiac Firefly. Most parts on those cars would be compatible.
do you mean the EGR valve? it's at the base of the intake manifold