Nissan Sentra Service Manual: Precautions For Engine Service
DISCONNECTING FUEL PIPING
- Before starting work, check no fire or spark producing items are in the work area.
- Release fuel pressure before disconnecting and disassembly.
- After disconnecting pipes, plug openings to stop fuel leakage.
DRAINING ENGINE COOLANT
Drain engine coolant and engine oil when the engine is cooled.
INSPECTION, REPAIR AND REPLACEMENT
Before repairing or replacing, thoroughly inspect parts. Inspect new replacement parts in the same way, and replace if necessary.
REMOVAL AND DISASSEMBLY
- When instructed to use SST, use specified tools. Always be careful to work safely, avoid forceful or uninstructed operations.
- Exercise maximum care to avoid damage to mating or sliding surfaces.
- Dowel pins are used for several parts alignment. When replacing and reassembling parts with dowel pins, check that dowel pins are installed in the original position.
- Must cover openings of engine system with a tape or equivalent, to seal out foreign materials.
- Mark and arrange disassembly parts in an organized way for easy troubleshooting and reassembly.
- When loosening nuts and bolts, as a basic rule, start with the one furthest outside, then the one diagonally opposite, and so on. If the order of loosening is specified, do exactly as specified. Power tools may be used in the step.
ASSEMBLY AND INSTALLATION
- Use torque wrench to tighten bolts or nuts to specification.
- When tightening nuts and bolts, as a basic rule, equally tighten in several different steps starting with the ones in center, then ones on inside and outside diagonally in this order. If the order of tightening is specified, do exactly as specified.
- Replace with new gasket, packing, oil seal or O-ring.
- Thoroughly wash, clean, and air-blow each part. Carefully check engine oil or engine coolant passages for any restriction and blockage.
- Avoid damaging sliding or mating surfaces. Completely remove foreign
materials such as cloth lint or dust.
Before assembly, oil sliding surfaces well.
- After disassembling, or exposing any internal engine parts, change engine oil and replace oil filter with a new one.
- Release air within route when refilling after draining engine coolant.
- After repairing, start the engine and increase engine speed to check engine coolant, fuel, engine oil, and exhaust gases for leakage.
Precaution for Procedure without Cowl Top Cove.r.
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc to prevent damage to
windshield.
...
Parts Requiring Angle Tightening
Use the Tool for the final tightening of the following engine parts:
Tool number : KV10112100 (BT-8653-A)
Camshaft sprocket (INT) bolt
Cylinder head bolts
Main bearing cap bolts
Connec ...
Other materials:
Making a call
To make a call from a phone connected to the
vehicle’s Bluetooth® Hands-Free Phone System:
NOTE:
Available commands different if system is
in Manual Control mode. See “Manual Control”
in this section for more information.
Press the button.
The system will prompt you for a command. ...
P1225 TP Sensor
DTC Logic
DTC DETECTION LOGIC
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P1225
CTP LEARNING-B1
(Closed throttle position
learning bank 1)
Closed throttle position learning value is excessively
low.
E ...
Loading tips
The GVW must not exceed GVWR
or GAWR as specified on the
F.M.V.S.S./C.M.V.S.S. certification
label.
Do not load the front and rear axle to
the GAWR. Doing so will exceed the
GVWR.
WARNING
Properly secure all cargo with
ropes or straps to help prevent it
from slid ...
