Factory Timing Advance Question
I have an Actron data reading/code reading tool, and I was always confused that the ignition "advance" read in a negative number. I thought that there was something wrong with the tool. However, my timing numbers read in the same neighborhood....
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TECH Veteran
Joined: Dec 2008
Posts: 4,147
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From: Little Rock, AR
If the scanner value is timing, it would likely show it in negative degrees.
If the scanner value is advance, it would likely show it with a positive number (which is really a negative value, since it is advance).
Both mean the same thing.
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Verdad Gallardo This was my thinking.
I think I've seen people use a scanner like that before.
RamAir thanks for posting the chart I'm saving it for future reference.
If you guys can't tell I haven't messed with ignition timing a whole lot before. So if I seem like a newb I guess I am.
.....Yes, timing is always Before TDC (BTDC), however that makes it negative.
If the scanner value is timing, it would likely show it in negative degrees.
If the scanner value is advance, it would likely show it with a positive number (which is really a negative value, since it is advance).
Both mean the same thing.
If the scanner value is timing, it would likely show it in negative degrees.
If the scanner value is advance, it would likely show it with a positive number (which is really a negative value, since it is advance).
Both mean the same thing.
It's like the new, digital read out, front end machines. The "toe-in" value is always a positive number, indicating "toe-in". However, when the toe number posted on the read out is a negative number, it indicates "toe-out".....