Fuel injection cleaning, change spark plug wire, O2 sensor..

External Since: Jul 26, 2006 Posts: 1

I took my 93 Camry to a shop to get a diagnosis of potential problems that
might cause it not to pass the emissions test. It did not show that anything
was wrong-"no codes came up" on the machine. However the mechanic suggested
that the car should get new sparkplugs and wires, a new Oxygen sensor, and a
fuel injection cleaning because the car has 193,500 miles on it. It runs
fine--starts right up, doesn't stall/jerk or run-on after I turn it off. I
noticed on the last emissions test the CO2 line on low emissions met the
standard exactly. I am nervous that it will be over the standard this year.
Should I have some or all or none of this work done? Charles39

External Since: Dec 10, 2003 Posts: 270

How old are your components, you will pass without the work but
maintenance might get you 2-5 mpg more. Toy wires last, if yours are
original then replace them with Toy wires Non Oem might last 25-50% as
long, dont forget the rotor, Is the cap attached to new wires. Plugs
should be replaced at maybe 70000-90000 if they are platinum. Forget
fuel injector cleaning, your gas has cleaner in it, or go but a 6$ can,
you did say you run smooth. To improve milage-power and reduce pollution
check ignition timing. A bad 02 sensor reduces milage but you said yours
tested Ok. Your mech basicly just wants to sell you a bunch of
unessecary work on the pollution basis, Milage determines maintenance,
read your manual.