2002 chevrolet venture wire spark plugs sequence
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Filed Under (Ford) by admin on 04-10-2010
Engine miss, spark knock, buck/jerk, surge and other driveability concerns may be caused by induction crossfire. This occurs because of improperly routed spark plug wires. ACTION: If spark plug replacement is performed, the correct firing order and spark plug wire routing is essential to prevent the possibility of induction crossfire between cylinders. Refer to the following procedures for inspection of the spark plug wire routing and firing order. Properly reroute the spark plug wires if required. FIRING ORDER ^ The firing order for 1987-1993 vehicles is 1-5-4-2-6-3-7-8. If # 7 and # 8, or # 2 and # 4 spark plug wires are routed next to each other at the separation bracket, an induction crossfire condition can occur. ^ The firing order for 1994 vehicles is 1-3-7-2-6-5-4-8. On these vehicles the # 1 and # 3, or # 5 and # 6 spark plug wires must be separated to eliminate the possibility of an induction crossfire. ^ To eliminate the possibility of the coil wire becoming disconnected, route the coil wire under the spark plug wires at the distributor cap. 1987-1993 VEHICLES
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Filed Under (Chevrolet) by admin on 19-09-2010
1. Disconnect the spark plug wire at each spark plug. ^ Twist the boots 1/2 turn before removing the boots. ^ Pull only on the boot or use a tool designed for this purpose in order to remove the wire from each spark plug. 2. Disconnect the spark plug wire from the distributor. ^ Twist each spark plug boot 1/2 turn. ^ Pull only on the boot or use a tool designed for this purpose in order to remove the wires from the distributor. INSTALLATION PROCEDURE NOTE: If the boot to wire movement has occurred, the boot will give a false visual impression of being fully seated. Ensure that the boots have been properly assembled by pushing sideways on the installed boots. Failure to properly seat the terminal onto the spark plug will lead to wire core erosion and result in an engine misfire or crossfire condition, and possible internal damage to the engine. 1. Install the spark plug wires at the distributor. 2. Install the spark plug wire to each spark plug. 3. Inspect the wires for proper installation: 3.1. Push sideways on each boot in order to inspect the seating. 3.2. Reinstall any loose boot. 3.3. Wire routings must be kept intact during service and followed exactly when wires have been disconnected or when replacement of the wires is necessary. Failure to route the wires properly can lead to radio ignition noise and crossfiring of the plugs, or shorting of the leads to the ground. 3.4. Any time the spark plug wires or boots are installed on the spark plugs, new dielectric grease needs to be applied inside the boot.
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Filed Under (Mercedes-Benz) by admin on 25-05-2011
Step 1. Wait for the engine to cool down and gather listed materials. Working on a hot engine is incred- ibly dumb. Step 2. Open the hood and remove the front panel and airbox. (Fig. 1.) Step 3. Protect the air intake with a cover (I used aluminum foil. (Fig. 2.) Fig. 1. Engine all assembled Step 4. Locate the spark plugs. This engine has six-cylindars and twelve spark plugs (six on each side). Select one side to do at a time. Step 5. Starting with the spark plug furthest from the firewall, remove the electrical plug and unscrew unit from the engine using the T-25 Torx bit. Use the magnet to ensure the screw is not dropped into the engine. (Fig. 3.) Step 6. Spray the spark plug boots with WD-40 to loosen them for removal. Wait a few minutes to allow solvent to penetrate. Step 7. Use the 17 mm wrench to pry the boot off from the spark plug. This is the biggest pain in the ass. Try to loosen the boot by turning the boot using your hand. Be careful not to damage or crimp the boot if using the pliers. Fig. 2. Protect your engine! Cover the air intake from accidental beer spilling! Fig. 3. Spark plugs on driver’s side with wires and harnesses intact. Step 8. engine. position labeled, engine. Do this for the entire side of the This part took the longest. Label the of the modules. The boots are both on the module and on the (Fig. 4 and 5.) Fig. 5. The engine has embossed lettering to show which boot goes where. Fig. 6. Old and new spark plugs. I used OEM spark plugs, as seen in Fig. 7. Fig. 4. Engine without spark plug modules. Step 9. Remove the spark plug. This is a pain in the ass as well. Remember, lefty- loosy, righty-tighty. Use the appropriate-sized extension to remove the spark plug. You may have to change extensions mid way. Step 10. Insert new spark plug. Spray with WD-40 before screwing in to allow for easier removal the next time you change spark plugs. Tighten to 28 N m. Step 11. Re-attach boots to the spark plugs, making sure you place them in the right order. You will feel or hear a pop when they connect. Also re-attach modules to the engine block. Step 12. Repeat on other side of engine, noting the number of new and used spark plugs as you go along. Step 13. Once complete, remove cover that was placed on the air intake and replace air box. You are done! There will be some smoke and smell as the WD-40 burns off the engine and plugs.
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Filed Under (Chevrolet) by admin on 15-09-2010
Tools Required J38491 Spark Plug Heat Shield Removal Tool 1. Turn OFF the ignition switch. 2. Remove the spark plug wires from the spark plugs. NOTE: ^ Allow the engine to cool before removing the spark plugs. Attempting to remove the spark plugs from a hot engine may cause the plug threads to seize, causing damage to cylinder head threads. ^ Clean the spark plug recess area before removing the spark plug. Failure to do so could result in engine damage because of dirt or foreign material entering the cylinder head, or by the contamination of the cylinder head threads. The contaminated threads may prevent the proper seating of the new plug. Use a thread chaser to clean the threads of any contamination. 3. Remove the spark plugs from the engine. Installation Procedure NOTE: ^ Use only the spark plugs specified for use in the vehicle. Do not install spark plugs that are either hotter or colder than those specified for the vehicle. Installing spark plugs of another type can severely damage the engine. ^ Check the gap of all new and reconditioned spark plugs before installation. The pre-set gaps may have changed during handling. Use a round feeler gage to ensure an accurate check. Installing the spark plugs with the wrong gap can cause poor engine performance and may even damage the engine. 1. Measure the spark plug gap on the spark plugs to be installed and correct as necessary. Spark Plug Gap: 0.060 in (1.52 mm) NOTE: ^ Be sure that the spark plug threads smoothly into the cylinder head and the spark plug is fully seated. Use a thread chaser, if necessary, to clean threads in the cylinder head. Cross-threading or failing to fully seat the spark plug can cause overheating of the plug, exhaust blow-by, or thread damage.
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Filed Under (Ford) by admin on 25-10-2010
ISSUE Some 2004-2008 F-150, 2006-2008 Mark LT, 2005-2008 F-Super Duty, Expedition, and Navigator, with 5.4L 3-V engine; 2005-2008 Mustang, 2006-2008 Explorer, Mountaineer, and 2007-2008 Explorer Sport Trac with 4.6L 3-V engine; 2005-2008 F-Super Duty, 2006-2008 and F-Stripped Chassis, with 6.8L 3-V engine may experience difficulty with spark plug removal. This may cause damage to the spark plug and leave part of the spark plug in the cylinder head. Affected engine build dates are as follows: 5.4L 3-V and 6.8L 3-V before 10/9/07, 4.6L 3-V before 11/30/07. ACTION Refer to the following Service Procedure for techniques to remove the spark plugs and extract broken spark plugs. SERVICE PROCEDURE The engine build date can be read on the left hand cam cover information sticker. To remove spark plugs without damage, it is necessary to adhere exactly to this procedure before removal is attempted. CAUTION DO NOT REMOVE PLUGS WHEN THE ENGINE IS WARM OR HOT. THE ENGINE MUST BE AT ROOM TEMPERATURE WHEN PERFORMING SPARK PLUG SERVICE. REMOVING THE SPARK PLUGS FROM A WARM/HOT ENGINE INCREASES THE CHANCE THE THREADS COULD BE DAMAGED. 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. NOTE COMPLETELY REVIEW THE PRODUCT LABEL FOR THE MOTORCRAFT CARBURETOR TUNE-UP CLEANER PRODUCT – USE AT ROOM TEMPERATURE AND SHAKE WELL.