yes you can. I do it all the time.
Buy an oxygen sensor, some antiseize compound, and a sensor wrench. Unplug the wire from the car. Unscrew the old sensor. Put a little antiseize compound only on the sensor threads, Screw it in hand tight plus a half turn more, plug it in and you're done.
Sparkplugs are almost universal, because of the way sparkplugs work and the way they are shaped the same, it means you should be able to use "standard" sparkplugs.
== == Because they weren't tightened at installation properly. Because the threads in the head are stripped.
You use threads whenever you want your program to do several things simultaneously.You use threads whenever you want your program to do several things simultaneously.You use threads whenever you want your program to do several things simultaneously.You use threads whenever you want your program to do several things simultaneously.
The threads are autococker threads. All proto and dye guns have autococker threads.
ngk sparkplugs
Use a spark plug wrench?
Disconnect the negative terminal on the battery; disconnect the sensor connection; the sensor is located in the exhaust; drowned the threads in release compound; don't even try to remove an O2 sensor without first doing this, you will stip the threads or break of the sensor; let soak for about 5 mins, then unscrew; might be necessary to heat also with a torch, clean threads in exhaust and put and antiseize compound that is sensor safe and reinstall to appropriate torque, and reconnect sensor and battery.
To retap threads effectively, use a tap and die set to clean and repair damaged threads. Start by selecting the correct size tap for the thread you need to retap. Apply cutting oil to the threads and turn the tap clockwise to remove debris and reshape the threads. Be sure to go slowly and use steady pressure to avoid damaging the threads further.
use just a little anti-seize on threads
A paste compound, usually with nickel included, that can be applied to metal items threaded together so that they can be easily separated after use under high heat conditions.
Just like every other car. You take the old ones out and put the new ones in. If you didn't change at least four you need to keep looking. Don't forget to check the gap and use anti-seize on the threads of the new ones. I don't have a 98 forister.