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.
In a Subaru Forester, spark plugs typically need to be changed every 60,000 to 100,000 miles, depending on the engine type and model year. It's important to consult the owner's manual for specific recommendations, as maintenance schedules can vary. Regular inspections are also advised to ensure optimal engine performance and fuel efficiency.
Just check this thread - it has pictures and a good description. http://www.scoobymods.com/forums/showthread.php?t=3017
On a 2009 Subaru Forester, freeze plugs, also known as core plugs, are typically located on the engine block. They can be found on the sides and rear of the engine, serving to protect against coolant freezing and expanding. Accessing them usually requires removing components like the intake manifold or other parts obstructing the engine block. If a freeze plug is leaking, it may need to be replaced to prevent coolant loss.
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.
To change the spark plugs on a 2005 Subaru Forester 2.5 XT, first, ensure the engine is cool and disconnect the negative battery terminal. Remove the engine cover and then the ignition coil by unbolting it and disconnecting the electrical connector. Use a spark plug socket to carefully unscrew the old spark plugs, then install the new ones with the correct torque specifications. Reassemble by reversing the disassembly steps, reconnecting the ignition coils and battery terminal.
use a bendy extension with your plug socket on the end. Available in a good socket set such as Teng-Tools. Dan,