94 geo metro won't start. possibly fuel problem. has trouble when i hit gas to make up a hill and misses, no transmission or spark plug problems. HELP!

Check your battery, even a new (1 yr ago) battery will run down .You may need a jump

assuming its the engine? is it, and not transmission slipping? A/T?
1:the 60k tuneup in the operators guide done?
the 3 causes are. (takes tools to find which, in most cases.
lost compression , hot engine?
poor spark (weak or not timed right)
poor fueling.
there are simple tests for each.
we can do the tests, or guess?

Sounds like it's a Upper Valve Bearing. Is it a 1.3 L ?

check coil. no spark no start.

O2 Sensors with over 100,000 miles on them

Dirty MAF Sensor

Old Spark Plugs

Ignition Problems

Blocked gas filter or blocked exhaust converter

Exhaust system leaks before converter

TPS Sensor

if its only missing at low rpm, then I would think the problem is electrical. try replacing the spark plugs and the plug wires and the wire from the coil to the distributer, and make sure the plugs are gapped properly. that will probably solve your problem.

An automatic transmission on a 94 Geo Metro takes Dexron II (or higher- ie Dexron III etc) type transmission fluid only.

If your geo is losing power ,first thing to do is a comprision test .
if its testing any thing below 100 psi you may have to replace the piston rings.

You didn't describe the nature of the 'noise' which is probably why you haven't received a prior reply.
If it is missing, it might be injector problems but the injectors themselves are not loud enough to be heard over the other engine noise.
Spark plugs, ignition wiring, fuel filters cannot 'make noise.' Any of those can cause the car to run rough but not cause any specific noise unless it is related to the engine misfiring and in that case, it wouldn't just be a source of noise but also inadequate acceleration and a prominent jerking of the car at low RPMs. Carbon buildup is the likely cause although causing any engine to lug (drive in a higher gear at low speeds) can damage bearings in the engine, creating excessive bearing play and a knocking noise under some conditions. Also, a failed exhaust manifold gasket or associated pipes being cracked can really cause a racket.
Without us hearing the noise, it's kind of hard to diagnose it, but the above might give you some guidance.     

get the altenator tested also get the battery load tested