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Old 04-12-2019, 03:54 PM   #5
DieselSJ
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Join Date: Jun 2016
Location: Phoenix, AZ
Posts: 574
Re: Spark plug reading

Change brand of gas and see if yellow goes away. Mixture looks decent.
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87 R30 CC Dually, TBI 454, NV4500, zero rust barn find
87 Jeep Grand Wagoneer, 6.5 turbodiesel, 700R4
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