There are two types of subatomic particles located within the nucleus, the proton and the neutron. They way they are arranged, however, is in a kind of jumbled way. That, and the fact that they are constantly interacting via the strong nuclear force by changing back and forth from one to the other means that their really is no single, specific subatomic particle that is located at the center of the nucleus.
Its under the intake
If you are really intertested in doing some of these repairs on your own [and its a great idea if your mechanically inclined. A lot of repair work is reallyu simple stuff] The problem with Japanese cars and most cars newer than late 90s is their is so much computerized stuff and SO MUCH STUFF crammed into the engine arewa that it can be intimadating. I would highly suggest you invest the $13-$20 at any Pep Boys [or any big-box auto parts store] and buy yourself a Hayes manual for 1990-1999 Camry's. The car is so popular the store will probably have your manual right on ther shelf in stock. Hayes makes mauals for almost every auto and motorbike on earth. They are invaluable in solving your kind of question particularly. There will be a chapter on Fuel System which will have an easy to ocate section on replacing the fuel filter and if there is one or two, etc.The manuals are basically like having an encyclopedia just for your car. Every little detail is in there from replacing tiny little behind the dash light bulbs to listing fuses, to breaking the whole engine down! So-sorry I can't answer exactly where your filter is, {on my Toyota p.u its located under neath the chassis halfway betweenj the gas tank and the motor, along the fuel line that comes OUT of the gas tank on thre way to the fuel injectors. Mine is easy to replace with just two hose clamps and if yours turns out to be like that just make sure you check thr condition of the rubber where you connect5 to the filter. Look for crackling and other wear. I learned the hard way and the 1st time the lione burst. I was able to cut enough 'bad' line off and still have enought slack to connect filter. But fuel line is cheap and its better to just use new line where you can replace it easily. good luck.