I am quickly becoming defeated with this car. The car has 200,000+ miles and code reader says cylinder 3 and 6 are misfiring so I figured might as well change all the spark plugs and COPs since they have never been replaced and clean the fuel injectors. I found a lot of oil in the spark plug wells and on the COPs so I checked with a mechanic and was told to either get a new engine because the pistons are most likely shot or junk the whole car. Neither is an option as this is my only vehicle and I'm a single mom on a fixed income. In past two weeks I have only driven it four times and the last time there was a ton of smoke coming out the exhaust so I know it's really bad. I am fairly handy and try to do all my own mechanic work but this has me overwhelmed. What should I do?