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396 Posts
1994 impala ss stock lt1,,,misfire from 4 different cylinders but mis at random...only misses 1700 RPM and down....and is really bad at idle....cleaned injectors and nothing happened....replaced valve seals about three weeks ago and the reason for replacing was oil fouling spark plug on #8 cylinder....car ran good for a day then started missing on #5....took to my buddy to re-adjust rocker arms to make sure i did them right....he said they were good....ive checked spark and resistance in plug wires...next thing im thinking is taking off the distributer cap and checking that but idk....need some opinions please...