OEM Chevrolet Suburban 1500 Spark Plug

Chevrolet Suburban 1500 Spark Plug Parts and Q&A

• Glow Plug
  97326305
  Q: How to replace a spark plug on Chevrolet Suburban 1500?

  A:

  Begin Spark Plug replacement by eliminating the wire then making the plug loose one or two complete turns. Before unscrewing the Spark Plug it is essential to remove dust and dirt from its area using either compressed air or a soft brush. When replacing multiple plugs put all eventualities into trays that match the appropriate cylinder designations. When installing the new Spark Plug place the washer in the correct position then adjust the plug gap up to reach 1.016 mm (0.040 in). Begin manually starting the Spark Plug in the proper cylinder then securely torque it to 15 n.m (11 lb ft) when you use previously installed heads or to 20 n.m (15 lb ft) when working with new heads. The Spark Plug wire needs to be installed during the final stage.
• Glow Plug
  97226202
  Q: How to verify that the correct spark plug is installed and ensure its proper function on Chevrolet Suburban 1500?

  A:

  Driveability problems may occur when the wrong Spark Plug exists in the system so verify that the proper plug is in place. Use a Spark Plug with an appropriate heat range to prevent damage to both the engine and Spark Plug which might occur with either a cold plug causing fouling or hot plug triggering pre-ignition. The terminal p05 must be checked for damage by inspecting the terminal post for bends or breaks. Additionally, the post should stay stationary when twisting or pulling the terminal. Check the insulator for both sparkover and carbon track issues caused by electric charge travel from terminal post to ground while inspecting the Spark Plug boot and Spark Plug recess area in the Cylinder Head for liquid moisture as boot saturation leads to arcing problems. The proper operational condition of the insulator can be checked by examining it for potential electrical charge-allowing cracks that may produce arcing instead of reaching the electrodes (3, 4). Additionally test for possible arcing issues by verifying that the center electrode and side electrode terminal gap matches ignition system specifications to prevent impediments to Spark Plug functioning. According to ignition system specifications, adequate torque must be confirmed when installing spark plugs because improper torque can lead to operational deficits and excessive torque may cause the insulator to break. Check for tracking along the insulator tip instead of the center electrode section and verify the condition of side electrode and center electrode through a motion test; hear a rattling sound means internal damage exists while loose center electrode produces weak sparks. Inspection of electrodes (3, 4) must confirm they have no deposits between them while checking for worn off or missing platinum pads on the electrodes (3, 4) and verifying decreased fouling. Check the Cylinder Head Spark Plug recess to examine for debris since poor thread condition can impede full seating when installing the Spark Plug. A normal Spark Plug will exhibit brown to grayish-tan coloring with limited white powdery residue but carbon fouling will show itself as dry black carbon soot that stems from conditions like rich fuel mixtures, fuel injector leakage, high fuel pressure, obstructed air filters, incorrect combustion, reduced ignition output, weak coils, worn ignition wires, or misaligned Spark Plug gap. Slowing down the engine during light loads at idle periods prevents combustion deposits from burning fully off resulting in spark intensity loss together with deposit fouling caused by oil or coolant or some additives. However, solid powdery deposits normally do not alter spark intensity unless they create a coating on the electrode.