Location: A Quiet Little Lake In The Middle of Nowhere
I believe that mostly it is an intermittent cutting out of power. Causes? There are many:
- bad spark plugs
- bad plug wires
- clogged injector or getting clogged
- vacuum line(s)
- bad fuel filter
- bad fuel pump
- This would be very bad, but an intermix of coolant and oil caused by a bad head gasket or bad oil cooler seals... both will cause some white exhaust and condensation on the underside of the oil cap (easy one to rule out)
There's a few, anyone else want to add to the list?
The list is a mile long. Air flow meter adjustment, bad airflow meter, vacuum leak in many possible places, cap and rotor, bad ground or connections to the injectors, one slightly bent valve, worn cam, bad lifter, low compression in one cyl., etc. Take it to someone who knows how to read the spark plugs for that the plugs never lie. Then put it on diagnostic machines to check for electronic functions, fuel pressure, exhaust emissions, and computer codes for any other possible problems. You will have to be more specific about the symptons. The best thing to do is to replace things that already are due for replacement because you can kill 2 birds with one stone.