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Ok, Ive read a few and scanned a few, most of you seem to have over 200k miles, think about this, as the "poppets" age they develop a type of resin inside the tubes and the actual poppet valve that hardens the plastic parts, requiring greater effort by the fuel pump causing premature failure of pumps, one after another with a "fresh" pump fixing the problem for a few days/weeks. ignition parts are usually pretty solid unless installed improperly (against metal of any type for the wires) fuel delivery is buried and hard to get to, most people dont use fuel injector cleaner every 20k adding to the problem. If all ignition checks good, It's like;y the spider injector assembly inside the intake at fault, while cleaners do clean metal injectors well in most cases, most have a hard time softening 200k mile fuel lined brittle plastic. New spider has fixed many of these problems all but one time I have replaced one. 9 replaced, one wasn't the spider, I was young and didn't care and I don't know what wound up fixing that one.
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