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1984 8 valve 900T pinking on boost
Posted by Saab Lunatic (more from Saab Lunatic) on Wed, 21 Apr 2010 02:09:29
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I have a 1984 8 valve 900T (Sept 83 build) that is pinking (detonating) as soon as it goes into boost ( as soon as it enters the yellow/orange zone on the boost gauge).
The ignition timing has been retarded as a temporary measure to stop the pinking, and although it goes right to full boost now without pinking, it is not a satisfactory solution to me as the engine is not running efficiently with retarded ignition timing .
The first thing I will get tested is the vacuum advance on the distributor but I wondered if there is anything else that could be causing this pinking?
Any help would be much appreciated,
Thanks a lot guys
posted by 121.213.90...
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