Save your money and put it towards repairing the reason it won't pass. There is no "magic potion".
check your answer
Replace the fuel filter, and check for a crimp in the line somewhere. Also look at the fuel pressure regulator.
check the fuel shut-off switch which is locate on the pass. side behind kick panel
If there are no leak issues check your fuel pressure regulator, it may be letting too much fuel pass by, also if your fuel pump is getting tired it may act that way. Another thing to check is the fuel filter, a blockage that builds as the pump runs will cause pressure to drop.
First, are you getting fuel to the injectors, to check just simply take the air box off the throttle body to see if there is any fuel being prayed into it, if your not, is your fuel pump pressurizing, if it is it might be a clogged fuel filter not letting gas to by pass... If it is getting fuel then check for spark, if its not getting spark check the rotor and button that's under the distributor cap, and also it might be a bad coil.
Having a misdemeanor warrant can show up on a background check. It will depend on how thorough the check is and what information is being searched. It's best to address the warrant to prevent any issues during a background screening.
the fuel pump relay should be on the pass. side inner fender there should also be a in-line fuse there too.if your fuel pump is not working,check the fuse and your grounds too.
block in system check fuel filter first. last time changed?has the car set for along time and fuel has gone bad causing floats to stick in carb not allowing fuel to pass though valve.
There isn't one, because they test for adulterants.
There is many different ways to do this but the best way is to clean your system (eat a lot red meat , take a fiber additive and vitamin b-12 , drink a lot of water- help rid the body of THC ).
You need to check the fuel pressure while driving,
1993 corolla fuel pump relay is said to be behind the radio. You can by pass the relays. Diagnoistic box. Jump +B to FP. Located in both corners closest to firewall.