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Stumbling and hesitation
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Question
kitttransam
So I posted not too long ago about fuel pressure problems I thought I had. My truck keeps hesitating and stumbles about half throttle. It does come out of it once it picks up speed. So what I've done, replaced fuel pump, fuel filter, cleaned injectors the diy way. Found a bad vacuum connector on the fuel regulator fixed that. Had new o2's in it for a while now, put my old ones back in. Checked vacuum and it's at about 18. Stays stable at higher Rpms. No service engine light is coming on at all. And I did check for codes anyway and nothing. Spark plugs are fairly new in it. I do have my old ones and they don't look too bad. Thinking about swapping those out to see if there's a difference. This is on a 99 Silverado 2500 6.0 and any ideas or advice is really needed.
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