Posted by Bob Bancroft on February 22, 2014 at 04:10:02 from (67.142.162.21):
One of the well below zero mornings my pickup was hesitant, and was skipping briefly after it started. 2004 Chev. 5.3L 106000 miles. I assume original plugs. So, maybe it's time for new plugs! I get the recommended ones (GM/Delco) from the local parts house. They are a different number than what's in my op. manual, and different from what's in the engine! Parts house says the numbers are changing constantly. So, I replace them. The plugs that were in the engine had a GM number as well as an NGK number printed on them! They look OK. Don't even look worn. But the gap is about .060". Aftermarket repair manual says .040" gap, years 2004 and later. The new plugs were .040". I'm wondering if the plugs in the truck were the wrong ones? Truck had about 40000 miles on it when I bought it.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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