Posted to the Waveform Library on 10/27/2003

the engine is at 2500 rpm , intake vacuum is 23' , when the egr is opened vacuum drops to 20.5' , the waveform above is with the egr opened with a hand vacuum pump , cylinder 1 has all the egr flow , passages are clogged for cylinders 2-4 , ussually on a 4 cyl...