Can knock sensor be re-used?
Thread Starter
Drifting
Joined: May 2007
Posts: 1,426
Likes: 165
From: Motor City
Can knock sensor be re-used?
They come with some sort of thread sealant on them and are torqued to a specific value.
Since the sealant is a bit damaged upon removal can they be used again?
Since the sealant is a bit damaged upon removal can they be used again?
Melting Slicks
Joined: Jul 2011
Posts: 2,605
Likes: 202
From: Trinity FL
Yes they can be reused, just get pipe thread sealant from a hardware store and lightly coat all the threads and let it dry for 30 minutes or so before you reinstall.
Or buy new sensors that already have the pipe dope on it and install accordingly. Either way is fine.
Or buy new sensors that already have the pipe dope on it and install accordingly. Either way is fine.
Melting Slicks
Joined: Jul 2011
Posts: 2,605
Likes: 202
From: Trinity FL
Melting Slicks
Joined: Nov 2013
Posts: 3,451
Likes: 336
From: Greater Cincinnati Area.
Be careful tightening them if you decide to re-use. I messed up a relatively new one by over tightening, and it wasn't by a lot. I mean I didn't kill the thing when re-installing it.
It apparently just deformed a little bit, and that killed it.
It apparently just deformed a little bit, and that killed it.
Thread Starter
Drifting
Joined: May 2007
Posts: 1,426
Likes: 165
From: Motor City
Yea good advise. If I remember correctly it was like 12 ft-lbs or something like that. I'll take a look at the FSM.
Melting Slicks
Joined: May 2013
Posts: 2,692
Likes: 349
From: Sacramento California
About the torque value, my research indicated 14 ft-lb and that is what I used, along with a tiny bit of anti-seize on the threads. No problems.
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Burning Brakes
Joined: Jun 2016
Posts: 761
Likes: 66
From: Fitzwilliam New Hampshire
Don't they need to be grounded to the block to send a signal to ecm, isn't that why the factory sealant is minimal, to much pipe dope no ground, just what I read somewhere on forum.
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
I bought a new one and saw that the original one looked fine so i reused it with some Aviation Permatex.