problem started with car after a major head gasget blow replaced it but extreamly noisy in motor timeing showing about 21 advanced
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2002 Oldsmobile Alero Question: how far advanced should the timeing show on a computer reader in the 3.4 v 6
Answer #1mastertech6371 September 25, 2011, 06:32Master
thats about right. it will vary according to load. what is the issue you are having??
Answer #2patrick mannion from Greg Solow's Engine Room, September 25, 2011, 10:11Master
The computer is smarter than we are it looks at load, air coming in, engine temperature ect.... It calculates timing requirements to give best power, fuel economy and keep emissions lowest. I look at the value on a scan tool if there is a drivability issue for loss of power.