How to check knock sensor??

VersaTuner for Mazdaspeed6, Mazda 6 MPS, Mazdaspeed3, Mazda 3 MPS, CX7
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boloteo
Posts: 36
Joined: November 27th, 2011, 4:33 pm

How to check knock sensor??

Post by boloteo »

Hello,
I`m new to this forum and i have recently purchase versatuner (very very good software).

So i have a question is there anyone knows how can i check if my knock sensor is working properly?


Thanks in advance......
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Steve @ VersaTune
Lead tuner
Posts: 1157
Joined: March 29th, 2010, 12:58 pm

Re: How to check knock sensor??

Post by Steve @ VersaTune »

Log normal driving with the Ignition Timing preset. You will typically see an occasional blip of Knock Retard when you transition to light acceleration from cruise.

You may also see KR around 5200 RPM at WOT. This is a common place where knock is seen.

If you want to be certain, you can run the fuel tank near dry and put a small amount of low octane gas in and drive. You will see plenty of knock then. Fill the rest of the tank with premium after testing.

A heat soaked engine will knock the most. Shut it off hot, let it sit for 5 - 10 minutes, then start it up and test.
boloteo
Posts: 36
Joined: November 27th, 2011, 4:33 pm

Re: How to check knock sensor??

Post by boloteo »

Thanks a lot for your fast response.......


I will try it and let you know.......
boloteo
Posts: 36
Joined: November 27th, 2011, 4:33 pm

Re: How to check knock sensor??

Post by boloteo »

I try it and the knock seems to respond ok...

Thanks a lot.........
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