no it doesnt it makes it better because they are fresh
YOU CAN REMOVE THE SPARK PLUGS WITHOUT REMOVING ANYTHING EXCEPT THE SPARK PLUG WIRES IN THE REAR USE A SWIVAL AND EXTENSION AND WORK ON BOTH SIDE AND THE MIDDLE OF THE PLETNIUM THE FRONT SPARK PLUGS NEED JUST TO REMOVE THE THREE COILS
Then you'll have three good spark plugs and three bad spark plugs. Not a good combination. I suppose you want to know if it will hurt anything though. The answer is no but if the three old plugs are shot it won't run very good.
they are three in front and three in back just below the valve covers 5/8 wrench should fit them. unscrew them out and replace with new ones and your done. would be a good time to change plug wires also
First of all you can get to the first 3 plugs very easily. The other three you have to take off the plenum (be sure to replace the old plenum gasket)
well the dealer wants 350 dollars. i just had my replace for 150dollars. don't buy their(dealer) spark plugs because they want 15.00 each. go to auto zone and you can get the spark plugs there for about 4.00-6.00dollars. spark plug wires are 33.00 each and there are three, but you can get them at auto zone for 34.00 dollars for all three. i hope this helps you.
The 2000 Toyota Avalon spark plugs can be located on each side of the engine. The spark plugs will be near the bottom of the engine. There are three spark plugs on each side.
The spark plugs are located on the side of the engine, near the bottom. A four-cylinder engine will have two spark plugs on each side. A six-cylinder engine will have three spark plugs on each side.
You can find the spark plugs for your 2002 Nissan Pathfinder on each side of the engine. The spark plugs will be near the top of the engine. A six-cylinder engine will have three spark plugs on each side.
I own a 1994 Bonneville and replacing the back spark plugs was not too bad, there is enough room and with a socket extension you will have no trouble.
I suspect you have V6. If it is the case, you will have to remove intake manifold. There is no other way to replace it.
There are three engines available. If it's a 6 cylinder engine, 6 spark plugs. If it's the 4 cylinder engine, 8 spark plugs.
Remove oil filler cap, remove plastic cover (3 screws), remove air filter, remove coil packs, spark plugs can then be replaced. don't forget the three in the rear bank!