Spark plug tightening force

isthatheavy_149979
Tue, 26 Mar 2019 19:35:54 +0000
Maintenance/Repairs

Hi everybody, today I’ve replaced spark plugs. First I tightened them by hand and then with just regular wrench as I don’t own torque wrench. I’ve torqued them for 3/4 of a turn. From manufacturer specs it should be tightened to 20-30 NM. Took the car for a spin and runs fine, even better than before. I’m a little worried about the spark plugs being overtightened as I know they might over heat and at worst destroy the engine… Would taking them out and tightening them with torque wrench help? I’ve heard that once the washers are squished the plugs cannot be torqued correctly anymore. Thanks in advance for any advice

9 posts - 8 participants