Home Auto Repair Spark Plug Removal Procedure for '08 Lincoln Navigator

Spark Plug Removal Procedure for '08 Lincoln Navigator

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Download Spark Plug Removal Procedure for ’08 Lincoln Navigator – Spark Plug Removal Procedure 1. Remove the coil-on-plug assemblies and thoroughly blow out the spark plug wells and surrounding valve cover area with compressed air. 2. Back out the spark plugs no more than 1/8 to 1/4 of a turn. Using Motorcraft(R) Carburetor Tune-Up Cleaner, fill the spark plug well just above where the jamb nut hex sits (1/2 – 3/4 teaspoon). A minimum period of 15 minutes of soak time is required. The cleaner will wick down to the ground electrode shield and soften the carbon deposits in this time. DO NOT WORK the spark plug back and forth at this point. 3. Tighten, and then loosen the spark plug, working the plug back and forth. Some screeching and high effort may be noticed. The expected removal torque is about 33 lb-ft (45 N.m). Repeat the back and forth turning as needed until turning effort is reduced, and remove the spark plugs. Separated/Broken Spark Plug Removal If the spark plug separates after following the Spark Plug Removal Procedure, it will fail in one of three modes. Refer to the appropriate removal procedure as required. a. Mode 1: The ground electrode shield is left behind as an empty shell. (Figure 2)