Can't find fuel filte on 2005 camry

It means that the engine is running lean which can cause engine knock. When the knock sensors detect excessive knock they set the check engine light.
Low fuel pressure.
Dirty fuel filter.
Dirty or bad MAF sensor.
Bad MAP sensor.
Vacuum leak.

Bad injector.

Mike,
First check for small vacuum leaks by spraying aerosol carb cleaner at any area which might leak [ie vacuum hoses] Any vacuum operated device which contains a diaphragm needs to be checked using a hand vacuum pump. Sears sells a nice one.
Also check to make sure that the purge valve for the charcoal emissions canister is not leaking when the engine is cold.
If this does not help or you find no leaks, I would strongly suspect that you have dirty and/or leaking fuel injectors. Fords are notorious for fuel injector problems. Dirty fuel injectors first show up as a problem with engine stalling or rough idling when cold. Fuel tank cleaners like Chevron Techron will sometimes work. However, the BEST way is to remove all the injectors and have them sent out to a shop with proper testing/cleaning [ultrasound] equipment. Generally, shops which specialize in diesel fuel injection have this equipment. Should cost you around $25 per injector for testing/cleaning.

You by some good fuel injector cleaner from the parts store

Fuel injectors may need cleaning.

Black smoke indicates running "rich" (using excessive fuel) sounds like an injector is sticking open. I would first run a strong fuel system cleaner through it. (Maybe even have a professional fuel system cleaning) Ques? When was last tune up? A dirty air filter would contribute, but not make alot of black smoke.

Being that you have a 1998 Toyota Camry, these cars are fuel injected and shouldnt need the gas pedal depressed to feed fuel to your engine. It's possible you may have a dirty fuel pump or dirty injectors. Here are some possible steps (cheapest in $) so follow these in order to spend less money.
- Run some Lucas Fuel System Cleaner (green cap bottle), do two treatments of that in your gas tank and see if that makes a difference. Dirty lines and clogged injectors are caused by cheap gas and or constantly running on Empty thus allowing fuel pump to pick up sediment from bottom of gas tank.
- Sputtering could also be worn spark plugs (too big of a gap) and or faulty spark plug wires or both.
-Timing chain issues usually occur if you hear a constant vibration near the top of the engine.
-Transmission issues would be having trouble putting the car in certain gears, or the transmission stick does not sit in gear properly (slippage).

Just some suggestions that may help with your problem.

SOUND LIKE IDLE SPEED CONTROL NOT WORKING SCAN IT TO CHECK FOR FAULT CODE..ALSO REPLACE AIR FILTER.CLEAN FUEL INJECTORS.IF THEY ARE DIRTY THEY WILL CAUSE ENGINE IDLE LOW AND ROUGH.FILL GAS TANK UP PUT A BOTTLE OF FUEL INJECTOR CLEANER IN FUEL TANK.ALSO BAD PLUGS AND WIRES WILL CAUSE PROBLEMS.

had this problem as well.. check the oxygen sensor on it (sometimes critters like that wire) or like shel said dirty injectors or filters could be it.. bad gas is also another one... dont go to places with old tanks or that is really cheap, run at least 91

SOUND LIKE DIRTY FUEL INJECTORS.FILL GAS TANK UP.POUR A BOTTLE INJECTOR CLEANER IN GAS TANK.DRIVE CAR AROUND.SO THE CLEANER CAN CLEAN OUT INJECTORS.ALSO REPLACE FUEL FILTER.HEY YOU CAN GO TO AUTO ZONE OR ADVANCE AUTO THEY WILL SCAN YOUR CAR FOR FREE.

there are many reasons for this...it could be a stopped up fuel filter, to dirty injectors. I would change the fuel filter, then fill the tank, and add fuel injector cleaner, The gas we get these days is not what it used to be....try changing where you get your gas....hope this helps, and please rate me...thank you