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Re: She won't fire up. Please help me! I"m at a complete loss!
At WOT the LTFT should be pretty much 0, as those tables are no longer really being used (fuel cell 22 ltft). Usually a big negative number means your leaking at idle, and -18 would be a decent leak imo. It can also translate to running HELLA rich. I would take a look at the MAF, vacuum leaks etc. If that LTFT number is taking big jumps, then we have something else to look at.
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'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING 
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