Nissan 2005 Frontier VQ40DE Engine Maintenance Manual

Below you will find brief information for 2005 Frontier, VQ40DE Engine. This document provides essential details for engine maintenance, including specific spark plug specifications (NGK PLFR5A-11, PLFR4A-11, PLFR6A-11) with a nominal gap of 1.1 mm (0.043 in). It emphasizes that plug gap adjustment is not required between change intervals and outlines cautions for handling spark plugs, such as not dropping them or using a wire brush for cleaning. Additionally, it covers the inspection of EVAP vapor lines and the fuel tank filler cap.

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ENGINE MAINTENANCE (VQ40DE ENGINE)
●
Checking and adjusting plug gap is not required between
change intervals.
A
B
C
SMA806CA
D
Make
NGK
Standard type
PLFR5A-11
Hot type
PLFR4A-11
Cold type
PLFR6A-11
Gap (nominal)
E
1.1 mm (0.043 in)
F
CAUTION:
●
Do not drop or shock the spark plug.
●
Do not use a wire brush to clean the spark plug.
G
H
I
J
SMA773C
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
Do not drop or shock the spark plug.
K
Checking EVAP Vapor Lines
1.
2.
ELS001DL
Visually inspect EVAP vapor lines for improper attachment, cracks, damage, loose connections, chafing
or deterioration.
Inspect vacuum relief valve of fuel tank filler cap for clogging, sticking, etc.
Refer to EC-668, &quot;How to Detect Fuel Vapor Leakage&quot; .
Revision: November 2005
MA-29
2005 Frontier
MA
M
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Key features

NGK Spark Plug Compatibility (PLFR5A-11, PLFR4A-11, PLFR6A-11)
Pre-set Spark Plug Gap: 1.1 mm (0.043 in)
No Plug Gap Adjustment Required Between Intervals
Caution: Do Not Drop or Shock Spark Plugs
Caution: Do Not Use Wire Brush to Clean Spark Plugs
Guidelines for EVAP Vapor Lines Inspection

Frequently asked questions

No, checking and adjusting plug gap is not required between change intervals for the VQ40DE engine.

The recommended NGK spark plug types are PLFR5A-11 (Standard), PLFR4A-11 (Hot), and PLFR6A-11 (Cold).

The nominal gap for the spark plugs is 1.1 mm (0.043 in).

Do not drop or shock the spark plug, and do not use a wire brush to clean the spark plug.

Visually inspect EVAP vapor lines for improper attachment, cracks, damage, loose connections, chafing or deterioration, and inspect the vacuum relief valve of the fuel tank filler cap for clogging or sticking.