This would be better asked of someone who could actually see the plugs. My only thought is that this is not a normal condition and, everything else being as it came from the factory, there may be some arcing going on from a bad contact between the terminal on the bulb and the connector in the plug. Much more detail is needed to accurately answer a question like this one. --Ken
6000 miles
Most if not all plugs have gaskets.
New spark plugs and possibly plug wires.
Yes, you should replace the spark plugs in your Forester at the intervals recommended in your owner's manual.
Follow recommendations in your owner's manual.
You have a four-cylinder engine with one spark plug in each cylinder.
Just check this thread - it has pictures and a good description. http://www.scoobymods.com/forums/showthread.php?t=3017
To fix the Subaru from starting when the temp drops below 32 --- just put new plugs in and us 92 octane fuel. It made a huge difference in our two Foresters.
use a bendy extension with your plug socket on the end. Available in a good socket set such as Teng-Tools. Dan,
Headlight socket?
you dont
It is important to know the location of the spark plugs while owning a car. In a 2002 Subaru Impreza WRX there are spark plugs near the bottom of the engine block on each side of the car.