Agreed about re-use of the crush washer being different but I only tend to take the plugs out to replace them. Plugs just don't seem to get dirty or need adjustment these days.D-Rider wrote:I think the "finger tight + a quarter" is not necessarily a good guide in all circumstances.Fausto wrote:And the thing with spark plugs is that most of the time just 'giving them a quick twist and it should be ok' is fine where they are easy to access so you can retighten if they come loose but those buggers in the front cylinder need to be fit and forget so I would spend a little time making sure I got it right.
Having said that I am happy with the finger tight until the washer bites then a quarter turn with a wrench technique
The plugs come with a washer that gets crushed on first fitment. Therefore, the strain of the "+ a quarter" will be very different on subsequent fitments - after you've removed to inspect/clean.
Spark Plug Torque Wrench
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- BikerGran
- Gran Turismo
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Ah well, I spose I have the feminine touch!back_marker wrote: Unfortunately I'm a fully paid up member of the "tweak it... tweak it... tweak it... bugger" club and frequently use a torque wrench to stop myself over tightening things.
It's quite surprising how little torque is needed on some bolts, to the point that i have often overtightened bolts before I've got the torque wrench out to torque them up.

The tragedy of old age is not that one is old, but that one is young.
.... which usually translates to inflicting as much pain on any set of nuts as is humanly possible .... please set the torque wrench to stun before you pass it to her!BikerGran wrote:Ah well, I spose I have the feminine touch!back_marker wrote: Unfortunately I'm a fully paid up member of the "tweak it... tweak it... tweak it... bugger" club and frequently use a torque wrench to stop myself over tightening things.
It's quite surprising how little torque is needed on some bolts, to the point that i have often overtightened bolts before I've got the torque wrench out to torque them up.
“Scientists investigate that which already is. Engineers create that which has never been.”
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