1990, 2.2, 126000 miles, AT, non-factory AC. Car has a pinging problem under load. No codes. Went to higher grade fuel, no luck. Changed plugs, no luck. Replace o2 sensor (had orginial) no luck. Did find a blown TBI to manifold gasket during a extensive vaccuum check, fixed it. Pinging problem not as bad. It will not ping when power braking in drive. I suspect now that timing chain/gears/tensioner need replacing. Car has DIS so I can't play with the timing. Car runs fine 'cept for the pinging issue. Plug read shows very good burn, light brown on all 4. Compression even across the board.
Thursday, May 24th, 2007 AT 1:17 PM