89 supra. lots of problems.. HELP!!

[89_supra_]

ok this just started on friday of last week.

i got out of the car, went inside to get something come back out to leave and it starts then quickly sputters and cuts out. tried it again same thing. but if i rev it really hard, it will keep going but i dont want to hurt the engine anymore than i probably alrady did.

someone told me it may be because of a dirty fuel filter,injector, etc.

if you can help me explain where are all these things your talking about are located so i can clean them.