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    Ash Buildup On Plug #5

    I have a 98 Tahoe 350 cu in. A month ago I was getting a loss of power and hesitation. Eventually I got a check engine alert. The scanner told me it was a misfire for cylinder #5. Cylinder 5 was covered in heavy ash. I replaced the plugs and wires and power has been restored. After 250 miles I...
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    AC Blows Warm

    My 98 Tahoe is blowimg warm air. The low and high side pressure seems OK. Added UV dye to the system and see no leaks.The aluminum chambers do get very cold and to the point where frost develops on them. When moving the temp dial to hot the fan will blow hot air. Any ideas?
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