No, but its the best you can get in the market. Faster starts, prevents cold start wear in the winter, better throttle response, and fuel economy. The original equipment spark plugs for the 2000 Toyota echo were indeed iridium, and they do not need to be changed for 100,000+ miles. I definitely recommend using iridium plugs when you must replace the OEM plugs. You should be able to check with the maintenance manual that came with your car for more info. But no cars REQUIRE iridium plugs. In fact, none of the Toyota Echos after 2000 came with those amazing iridium plugs that the 2000 model had from the factory. Also note that you may not even be able to buy those plugs at all anymore, from what I understand they had a special extra wide gap. The replacement plugs may have a smaller gap, and even if iridium, they may not be intended to last for 100,000+ miles. Most Echo owners consider the Denso (Part #SK16R11) or NGK (Part #IFR5T11) Iridium plugs to be the best replacement for this vehicle and they can both last for 100,000+ miles like the original equipment plugs.
No. Toyota plugs need the 2 prongs. Iridiums only have one prong which will not work. Try Bosch if you'd like.
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.
Factory recommendation to change the spark plugs on a 2000 Toyota Avalon is 120.000 miles.
How to change sparks on Toyota Rav 4 2003
It is probably your spark plugs misfiring.
0.060Exception: "Iridium plugs" which should be gapped at .040"per GM Document ID# 1396703
http://echodrivers.com/forum/viewtopic.php?t=4605url
Same relative position as the front plugs. They are just a lot harder to reach.
There are 6 plugs 3 are on the driver side and 3 are on the passenger side alone with the coils
The correct spark plug gap for a 2000 Toyota Corolla is .043 inches. Most spark plugs are pre-gapped, but its best to check before installation.
Check
The spark plugs on the 2nd bank are behind the engine under the crow bar. They can only be felt with hands follow the spark plug wires. Change the spark plugs are very easy but needs the proper spark plug socket and the wrench extension.