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Posted to Technical Discussion Forum on 5/1/2001

Excessive fuel consumption, occasional black smoke and no codes!

Check Pressure and flow, Timing, ECT, TPS, Injectors, O2 Sensor, AFM, ECU.

But nobody mentioned anything about Crank Sensor! [:-()

[1988 GMC Commodore, CKP Sensor Waveform] Login to read more.

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