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timing adjustment needed on my volvo 240? 200

posted by  Dakar09 on  Fri Jul 19 06:31 CST 2013
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last visit: Thu Oct 23 22:23 CST 2014
[RELATED]

If it's making that clattering (marble on floor sound) when you're giving it gas under load, that indicates "pinging". I suspect the timing may be too far advanced (if not ECU controlled), and/or the fuel quality/octaine is too low. You could have dirty fuel injectors, a clogged or failing cat (as suggested already), failing O2 sensor, or your ECU is on the fritz.

To start, I would run some fuel injector cleaner through it and put a good tank of high octane gas as well, see if that changes things.






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