More than likely varnish or trash buildup inside a lifter. I have used this product (Seafoam Motor Treatment) many times and it can work wonders. You can purchase at many auto parts stores, such as Advance, Pep-Boys, etc. You may have to ask for it. Follow the directions explicitly. This is not one of the snake oil products and does work as advertised. Read about it here. http://www.seafoamsales.com/motorTuneUpConsumer.htm
yes it would pull the caravan
A Dodge Caravan does not have a reset switch.
How to replace or change the 1997 Dodge Caravan 3.3 liter engine
All engines in that caravan are interference except 3.0 liter
The torque specification is 13 foot pounds or 130 inch pounds for the spark plugs on a 2007 dodge caravan 3.3 liter
I can get to it but how does one get it out?
A 2000 Caravan does not have a cabin air filter.A 2000 Caravan does not have a cabin air filter.
A 2000 Caravan does not have a cabin filter.
It is behind the battery, on the fender well.