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    4.3 tbi has a drinking problem..

    Hi, I’m new to this forum but some help would be very much appreciated. My K1500 is from -92 with 170k miles, the truck’s been sitting a lot since the last 10 years.. It runs very rich and tailpipe is black with soot. Gas mileage is never above 10mpg. Truck runs very good when cold, but the...
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