Quote:
Originally Posted by Surf WRaX
A 14mm Flare Wrench coupled with some "Blaster" penetrating oil did the trick. Thanks.
I did a lot of searching on spark plugs, and a lot of people recommend the Denso Iridium IK16 plugs, even sparkplugs.com says they work in the T100. However they are single ground and a sticker on the engine says use dual ground plugs, as a poster above said. Will these .4mm single ground iridium plugs work in the T100 with the 5VZFE ingine?
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Use the double electrode Toyota Plug. They have a double electrode for a reason. It all has to do with the way the coils fire. The plugs fire twice as often as regular plugs due to the DIS ignition.
The DIS improves the ignition timing
accuracy, reduces high–voltage loss, and enhances the overall reliability of the ignition system by eliminating the
distributor.
Unlike an independent ignition system which has one ignition coil for each cylinder as in the DIS of the 1MZ–FE
engine on the ’94 Camry, the DIS in the 5VZ–FE engine is a 2–cylinder simultaneous ignition system which ignites
2–cylinders simultaneously with one ignition coil.
MOST IMPORTANT----->
In the DIS system of 5VZ–FE engine, each spark plug is connected to the end of the secondary winding. High
voltage generated in the secondary winding is applied directly to 2 spark plugs. In one of the spark plugs, the
spark passes from the center electrode to the ground electrode and in the other plug the discharge is in the opposite
direction, i.e., from the ground electrode to the center electrode.
Twin ground electrode type spark plugs are used on the 5VZ–FE engine. Due to the employment of the DIS system,
the number of spark produced is double that produced in the conventional ignition system. To maintain spark plug
durability, the ground electrodes have been made bipolar.
The single grounds will work, but wont last as long and may damage the coils.