[andrew348]

for all its worth heres my opinion and i may only be a factory trained tech not a jiffy lube tech . lol had to throw it in just for fun , If a fuel injector is said to be clogged causing a missfire code then the cloged injector should of been replaced uner the 5 60 warranty , unless the injector was clogged by foreign material IE sugar in the gastank or somthing like that . However it is a good idea to clean the injectors , and depending on which method they use . method 1 49.99 spray some stuff in the throttle and call it a day . method 2 disconnect the fuel system and run the vechicle with a pressurized , solvent gas mixture 149.99
but i absolutly think and know for a fact that they need to get you to say yes before they do the work .