Spark Plugs Installation
GB
Spark plug installation
Recommended Torque and Tightening Angle for A B
DENSO plugs.
1. Use the correct wrench for the hex on the plug, and be careful not
to damage the insulator.
2. When changing, make sure that the oil, etc. on the outside of the
plug does not enter the engine interior.
3. When putting the plugs in, clean the engine side of the ange and C D
put in the plugs after making sure the gasket is in the ange.
4. Make sure the plugs are vertical and tighten them by hand until
they cannot be tightened any further (A+B).
5. Then use a torque wrench to tighten to the accurate torque value
as shown in the chart below. When no torque wrench is available,
use a spark plug wrench to tighten with the recommended turns.
For further information on the absolute torque value, please visit
our e-catalogue.
UK: http://www.denso-am.co.uk/e-catalogue/
EU: http://www.denso-am.eu/e-catalogue/
RECOMMENDED INSTALLATION TORQUE SPECIFICATION
If a thread lubricant such as grease is coated on
Recommended the thread, tightening to the recommended torque
Recomm- Turns
Thread size ended is tightening too much; this has been linked to seal
Torque New Used leakage. Do not use a thread lubricant.
plug plug
± 1/12
M8 Y type 8-10 Nм ± 1 turn
turn Tightening more than the tightening angles and
± 2/3 ± 1/12 torques shown in the above table could result in
M10 U, N type 10-15 Nм damage to the engine and furthermore could result
turn turn
in the plug coming off at the thread.
Stainless ± 3/4 ± 1/12
M10 10-15 Nм
steel gasket turn turn
SXU, X, XE,
± 1/3 ± 1/12
M12 XU, ZXE, ZXU 15-20 Nм
turn turn
type
Gasket
FK, J, K, KJ, P,
PK, PKJ, PQ,
Q, QJ, QL, S,
± 1/2 ± 1/12
M14 SF, SK, SKJ, 20-25 Nм
turn turn
SV, SVK, VK,
VKJ, W, ZT
type
Stainless ± 2/3 ± 1/12
M14 20-25 Nм
steel gasket turn turn
L, M, MA, MW ± 1/4 ± 1/12
M18 30-40 Nм
type turn turn
± 1/16 ± 1/16
Taper seat
M14 PT, PTJ, T type 20-30 Nм
turn turn
± 1/4 ± 1/12
M18 MA type 30-40 Nм
turn turn
