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Old 15-10-2018, 11:43 PM   #1
jb1212
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Exclamation What is normal Timing Advance?

Hi,
I've got a computer reader for my car (OBD2), and I have seen that my timing advance likes to jump up and down when I am idling (graph here). Is this right?
Thanks for your help.
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Old 16-10-2018, 08:36 AM   #2
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Default Re: What is normal Timing Advance?

That looks like a reasonably normal pattern, Are you experiencing issues?

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Old 16-10-2018, 09:30 AM   #3
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Default Re: What is normal Timing Advance?

Is that from start-up?
If so, why are you starting with the throttle opened?
As Russel said, looks ok, settling down from throttle open to zero.
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Old 19-10-2018, 10:00 PM   #4
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Default Re: What is normal Timing Advance?

No I am not experiencing issues (besides my cruise control button randomly working then not). I had my foot on the throttle to give it some revs. Why is the timing advance going up and down like that?
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Old 19-10-2018, 11:23 PM   #5
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Default Re: What is normal Timing Advance?

It is normal for spark to jump around at idle as the ecu will use it yo help control idle speed
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Old 03-11-2018, 11:08 AM   #6
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Default Re: What is normal Timing Advance?

I was driving yesterday with cruise control and watching the engine timing advance, and it is dropping 15 degrees almost instantly then going back to the value it was. I feel a gentle jerk when this happens. This is the image of this log while it was happening. Is this normal?

https://www.dropbox.com/s/0fsuqjvgdz...05_16.jpg?dl=0
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