How often should spark plugs be changed Toyota 4Runner?
For example, Toyota recommends changing the plugs every 120,000 miles on a Corolla, RAV4 or 4Runner, but every 60,000 miles on an 86 coupe, which was developed with Subaru and uses a Subaru engine.
What happens if you over torque a spark plug?
An over-torqued spark plug can cause stress to the metal shell, leading to thread damage or breakage. Over tightening can also compromise a plug’s internal gas seal or even cause a hairline fracture in the insulator. Remember anything interfering with the torque process can cause a plug to fail or worse, engine damage.
Can you tighten spark plugs without a torque wrench?
Spark plugs should be torqued to manufacturers’ specifications. However, it is possible to tighten the plugs satisfactorily without a torque wrench.
Can over tightening spark plugs cause misfire?
Under-torquing is a “don’t” because a loose or improperly seated spark plug can overheat which can cause a pre-ignition or a misfire condition. Over-torquing a spark plug is also a “don’t” because the insulator can be cracked.
Can you use a spark plug on a Toyota 4Runner?
Pick Up In-Store. Your Toyota 4Runner may be ahead of the game with its stylish design, innovative features and impressive longevity, but a faulty Toyota 4Runner spark plug easily puts your vehicle to shame.
What kind of engine does a Toyota 4Runner have?
The 1999 Toyota 4Runner was equipped with either the 2.7 liter four-cylinder engine or with the 3.4 liter six-cylinder engine. Each engine has its own torque specifications. “Torque,” in this context, refers to the amount of force necessary to turn a fastener, whether a bolt or a nut.
What are the torque specs for Toyota spark plugs?
There was only a small amount of oil on the threads of two of them, and a tiny amount of oil on one or two of the coil inserts indicating I need to change the VC gasket soon. The plugs were replaced with same as original Toyota branded Denso SK16R11. The spec value of torque in the Toyota shop manual is 18 ft-lb (216 in-lb, 25 N-m).
What are the torque specs for a Toyota 1ZZ engine?
The plug spec for my 1ZZ-FE engine states 18 ft-lb. The 2ZZ-GE engine is much lower (about 12.5 ft-lb). With a NEW PLUG (Denso SK16R11) on the 1ZZ-FE engine, after finger tight, the torque will climb to around 12 ft-lb as the washer begins to crush. This initial rise may take about a 1/4 turn.