Remove the air filter and remove the three 10mm bolts that fasten the filter box to the valve cover. This will reveal the 4 coil packs that cover the plugs. One doesn't need to remove the hoses from the air filter box to the intake, but rather push it to the driver's side. This will facilitate removal of even the plug nearest the driver's side fender.
Remove the coil pack wire connection from the coil by pressing down the grooved tab and wiggling whilst pulling.
Remove the 10mm bolt from each coil pack and wiggle-pull these out of the spark plug wells.
Remove the spark plugs with a 5/8 socket with an extension.
Replace plugs in the opposite order after coating the threads of the new spark plugs with anti-seize compound. Only use enough compound to coat the threads to avoid fouling the plug.
Replace the air box and filter. Done.
Take it to a Toyota dealership
Toyota says to change at 30,000 mile intervals in order to maintain Emissions warranty.
I just replaced the plugs on my 2005 tundra 4.7 v8. they are easy. their is so much room to work with. But do use the genuine Toyota spark plugs. "Do not use aftermarket plugs" i garauntee if you use the aftermarket plugs, you will wreak havoc. the heat range is too high on the aftermarket plugs, and therefore will burn holes in the ignition wires. check eBay for Toyota plugs or your local Toyota dealer.
I would replace the spark plugs after 50K, the wires and plugs again at 100K.
on the 3.5 v6 take off the engine cover, unscrew the coilpacks and take out the spark plugs.
Changing spark plugs is relatively easy. Disconnect the batter and spark plug cables, and remove the old spark plugs. Next replace the spark plugs with new ones, reconnect the spark plug cables and battery.
After 105,000 miles. Nissan Maxima spark plugs are platinum-tipped and lasts for many years.
On a 2005 Toyota Solara SLE, the spark plugs are located on the engine's cylinder head. For the V6 engine, you will find them under the ignition coils, which need to be removed first to access the spark plugs. If the vehicle has a 4-cylinder engine, the spark plugs are directly accessible on the top of the engine. Always consult the vehicle's service manual for specific instructions and safety precautions.
How to change the spark plugs
get a 3/8 in.drive Rachet,w/a 10in.3/8 extension,plus your spark plug Socket.that will do it!
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u take the old ones out and replace them by color