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'93 Legacy, A Bit of Pinging
Posted 22 October 2003 - 06:58 PM
I knew how to adjust for that on cars with a distributor that you could turn to advance or decrease the timing. Can the timing be manually adjusted on a '93 Legacy?
Posted 22 October 2003 - 09:40 PM
You cannot manually adjust timing on ANY car with ECU-controlled timing, unless you get a piggyback chip or reprogram your ECU.
However, I don't think it's a timing issue. You probably have the famed Subaru carbon build-up. Pull your spark plugs and see if they're all covered in black soot.
Or just run a higher octane. Neither of my Subies like 87...
Good luck, and welcome back to the USMB!:bday:
Posted 23 October 2003 - 06:59 AM
Posted 23 October 2003 - 08:13 AM
To gotsubarus, it's definitely an octane ping. Very slight. I needed gas last night, so I filled up with mid-grade 89 octane. Today is supposed to be hot again, so I'll see how it sounds driving home from work. There are a couple of pretty good grades on the way home that will flush out the ping if it's going to happen.
Posted 23 October 2003 - 09:10 AM
I'd suggest running 89 octane all the time. Especially in cali....their gas sucks and has tons of added chemicals to help emissions, which could be causing your pinging.
Posted 23 October 2003 - 12:28 PM
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