Over torquing Spark Plugs
#1
Registered User
Thread Starter
Join Date: Nov 2011
Location: virginia
Posts: 2
Likes: 0
Received 0 Likes
on
0 Posts
Over torquing Spark Plugs
2004 GT MT, I just replaced the plugs and wires. Used NGK wires and plugs. I have read a lot on this forum and the job was not too bad (thanks all) I did not use a torque wrench so I am wondering what is going to happen if I over torqued the plugs.
Also, the reason I did this was because all of a sudden the engine could hardly start moving from first gear. Very rough and NO power. 2 of the plugs were white and damaged at the tips, the others just looked used. The coils should be here tuesday and will be replaced promptly. Any info is welcome
Thanks in advance.
Also, the reason I did this was because all of a sudden the engine could hardly start moving from first gear. Very rough and NO power. 2 of the plugs were white and damaged at the tips, the others just looked used. The coils should be here tuesday and will be replaced promptly. Any info is welcome
Thanks in advance.
#3
Registered
First post...welcome. You're about to meet TeamRX8, but don't let that bother you.
Worst thing that can happen from overtightening plugs is stripping the threads in the engine. Second worst thing is that you may have trouble getting them out next time. Hope you used anti-sieze, or at least a couple of drops of oil, on the threads.
Ken
Worst thing that can happen from overtightening plugs is stripping the threads in the engine. Second worst thing is that you may have trouble getting them out next time. Hope you used anti-sieze, or at least a couple of drops of oil, on the threads.
Ken
#5
First post...welcome. You're about to meet TeamRX8, but don't let that bother you.
Worst thing that can happen from overtightening plugs is stripping the threads in the engine. Second worst thing is that you may have trouble getting them out next time. Hope you used anti-sieze, or at least a couple of drops of oil, on the threads.
Ken
Worst thing that can happen from overtightening plugs is stripping the threads in the engine. Second worst thing is that you may have trouble getting them out next time. Hope you used anti-sieze, or at least a couple of drops of oil, on the threads.
Ken
#10
Registered
#11
Registered
I don't think I've ever seen a spark plug that did not have shiny threads, either. I've never broken a plug, though.
Ken
#12
No respecter of malarkey
iTrader: (25)
the cluelessness doesn't end there
https://www.rx8club.com/showpost.php...89&postcount=9
https://www.rx8club.com/showpost.php...1&postcount=10
thanks for playing the repost game, better luck next time though probably not ...
https://www.rx8club.com/showpost.php...89&postcount=9
https://www.rx8club.com/showpost.php...1&postcount=10
thanks for playing the repost game, better luck next time though probably not ...
#13
Registered
And yet Mazda gives a torque spec in the shop manual.
Do the instructions on the side of the box apply to re-installing used plugs using the old washers? Or just new plugs with fresh crush washers?
Ken
Do the instructions on the side of the box apply to re-installing used plugs using the old washers? Or just new plugs with fresh crush washers?
Ken
#14
Registered User
Thread Starter
Join Date: Nov 2011
Location: virginia
Posts: 2
Likes: 0
Received 0 Likes
on
0 Posts
Thanks everyone. All the replys and knowledge are much appreciated. As for the "buy a freakin torque wrench". Thanks and in 40k I will make sure to have one.
#15
Registered
Re-installing old plugs with used / crushed washers cannot be done under the same instructions. Attempting to turn used plugs to the same degree after seating will result in overtorquing them, as there is little crush left in the used washer. In this case, I would use a torque wrench to factory spec. Also, since the factory coating has been compromised, I would also apply a little anti-seize to used plugs for reinstallation.
#16
Registered
I expect to keep using a torque wrench and anti-seize on both new and old plugs. Although I can't remember the last time I removed plugs from a car and put the old ones back in.
Another place I defy the official instructions is lug nuts. Having been stuck a couple of times with rusted-on nuts, I always put a drop of oil on the threads and on the tapered seat. Never had a problem with that.
Ken
Another place I defy the official instructions is lug nuts. Having been stuck a couple of times with rusted-on nuts, I always put a drop of oil on the threads and on the tapered seat. Never had a problem with that.
Ken
Thread
Thread Starter
Forum
Replies
Last Post
1.3_LittersOfFurry
Series I Trouble Shooting
9
09-22-2015 01:54 AM