How much torque?

[aquadog90]

I will be doing a service on my micra this weekend including air filter, oil filter, oil and spark plugs.

I was wondering how much torque should I use when tightening up new spark plugs?

 

[Enuo]

okay, so i am being stupid

ta james

I nip then do 1/8th of a turn, but Haynes specs 25Nm (19lbf ft)

 

[drand]

I nip then do 1/8th of a turn, but Haynes specs 25Nm (19lbf ft)

Yes, definitely err on the gentle side. You don't want to over-torque them.

 

[Enuo]

Yes, definitely err on the gentle side. You don't want to over-torque them.

Yeah, strip the soft ally thread and its head off and a £50 helicoil set to fix... ball ache!

 

[skymera]

I've never torqued plugs. I've always gone with common sense. Tight, not too much then back it off a tiny bit.

 

[Enuo]

I've never torqued plugs. I've always gone with common sense. Tight, not too much then back it off a tiny bit.

Common sense isn't very common...

 

[h701micra]

Wind em in by hand first
Then tighten with a rathcet a 1/4 turn

 

[Enuo]

Wind em in by hand first
Then tighten with a rathcet a 1/4 turn

1/4 turn, that's daring!

 

[h701micra]

1/4 turn, that's daring!

Always done it

 

[aquadog90]

Thanks for input guys! I have successfully changed it this weekend. Borrowed a torque wrench and used 25Nm it was perfect!