Hi all:
I plan on removing the original spark plugs on my 95 Maxima. The service requirement is 60k and no mileage stipulation but I'm over the 60k now.
Since the car has aluminum heads, I certainly don't want to do damage and have done a ton of reading on spark plug removal protocols. Folks advise using penetrating oil the minute you encounter any squeaking or resistance followed by sequential CW and CCW motion to slowly back it out, but would it be wise to loosen the spark plugs just a 1/4 turn or so and then place a few drops of something like PB Blaster and let it sit overnight as a precaution before going further? I was thinking of doing this even before loosening the plugs but got to thinking it probably wouldn't get past the seated gaskets of the plugs.
Also I came across an interesting video sponsored by Motor Week where Pat Goss suggests something interesting I wanted to run by the forum. He says it is a good idea after cracking the spark plugs to actually start the engine and rev it in order to blow off loosened carbon on the bottom threads of the spark plug (presumably through the exhaust valve?) so it doesn't get pulled into the threads as you remove the rest of the spark plug. Has anyone heard of this?
https://www.youtube.com/watch?v=RKxf0Rl2Pls
Finally, NGK told me that if I use penetrating oil, after the spark plugs are completely removed, to crank the engine in order to blow out any oil that has dripped into the cylinder. I would think it would burn off but then again I suppose they suggest this so it doesn't immediately foul the plug? They didn't seem concerned about penetrating oil actually remaining on the threads of the spark plug hole.
I plan on removing the original spark plugs on my 95 Maxima. The service requirement is 60k and no mileage stipulation but I'm over the 60k now.
Since the car has aluminum heads, I certainly don't want to do damage and have done a ton of reading on spark plug removal protocols. Folks advise using penetrating oil the minute you encounter any squeaking or resistance followed by sequential CW and CCW motion to slowly back it out, but would it be wise to loosen the spark plugs just a 1/4 turn or so and then place a few drops of something like PB Blaster and let it sit overnight as a precaution before going further? I was thinking of doing this even before loosening the plugs but got to thinking it probably wouldn't get past the seated gaskets of the plugs.
Also I came across an interesting video sponsored by Motor Week where Pat Goss suggests something interesting I wanted to run by the forum. He says it is a good idea after cracking the spark plugs to actually start the engine and rev it in order to blow off loosened carbon on the bottom threads of the spark plug (presumably through the exhaust valve?) so it doesn't get pulled into the threads as you remove the rest of the spark plug. Has anyone heard of this?
https://www.youtube.com/watch?v=RKxf0Rl2Pls
Finally, NGK told me that if I use penetrating oil, after the spark plugs are completely removed, to crank the engine in order to blow out any oil that has dripped into the cylinder. I would think it would burn off but then again I suppose they suggest this so it doesn't immediately foul the plug? They didn't seem concerned about penetrating oil actually remaining on the threads of the spark plug hole.