Nissan Sentra Service Manual: Spark plug
Exploded View
- Ignition coil
- Spark plug
- Rocker cover
Removal and Installation
REMOVAL
- Remove engine cover. Refer to EM-24, "Exploded View".
- Remove ignition coil. Refer to EM-46, "Exploded View".
- Remove spark plug using suitable tool.
(a) : 14 mm (0.55 in)
CAUTION:
Do not drop or shock spark plug.
INSTALLATION
Installation is in the reverse order of removal.
*: Always check with the Parts Department for the latest parts information.
CAUTION:
Always tighten the spark plug to specified torque to align the orientation of electrodes. The ground electrode of a genuine spark plug is positioned in the area of maximum ignitability by tightening to the specified torque. When replacing spark plugs, use genuine spark plugs of which the ground electrode is adjusted.
NOTE:
The ground electrode of the spark plug is positioned in the area of maximum ignitability to improve combustion efficiency in the cylinder, reduce CO2 (carbon dioxide) emission and improve fuel economy.
- Ground electrode of spark plug
- Top view
- Air-fuel mixture flow
- Poor ignitability region
Inspection
INSPECTION AFTER REMOVAL
Use the standard type spark plug for normal condition.
Spark plug (Standard type) : Refer to EM-118, "Spark Plug".
CAUTION:
- Do not drop or shock spark plug.
- Do not use a wire brush for cleaning.
- If plug tip is covered with carbon, spark plug cleaner may be used.
Cleaner air pressure : Less than 588 kPa (6 kg/cm2, 85 psi)
Cleaning time : Less than 20 seconds
- Spark plug gap adjustment is not required between replacement intervals.
- Measure spark plug gap. when it exceeds the limit, replace
spark plug even if it is with in the specified replacement mileage.
Refer to EM-118, "Spark Plug".
Drive belt
Exploded View
Alternator
Drive belt auto-tensioner
Crankshaft pulley
A/C compressor
Water pump
Drive belt
Possible use range
New drive belt range
Indicator
Removal and ...
Other materials:
The low washer fluid warning lamp does not turn on or off
Description
The low washer fluid warning lamp is still illuminated even after washer
fluid is added.
The low washer fluid warning lamp is not illuminated even though the
washer tank is empty.
Diagnosis procedure
1.Check washer fluid level switch signal circuit
Check the washer fluid ...
Uniform tire quality grading
DOT (Department of Transportation) Quality
Grades: All passenger car tires must conform to
federal safety requirements in addition to these
grades.
Quality grades can be found where applicable on
the tire sidewall between tread shoulder and
maximum section width. For example:
Treadwear 200 ...
Symptom diagnosis
Squeak and rattle trouble diagnoses
Work Flow
CUSTOMER INTERVIEW
Interview the customer if possible, to determine the conditions that exist
when the noise occurs. Use the Diagnostic
Worksheet during the interview to document the facts and conditions when the
noise occurs and any
custome ...
