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Originally Posted by cadillac_al
It sounds like the return line isn't doing its job; or the fuel pump is just weak as already mentioned.
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Are there particular fail spots to check on the return line, or just give it a good once-over? The mechanical fuel pump was replaced a month ago (in an attempt to fix this problem) with a new AC Delco, I hope that hasn’t crapped-out already.
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Originally Posted by truckin_79
Tell me if I am wrong here but sounds like you have a fixed fan blade on tuck....
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D’oh! It’s fixed. (EDIT: Just double checked. It is clutch style but NOT a thermal!! Still...D’OH!) That’s a great idea to upgrade! Any opinions on a fan shroud? If someone can provide a decent photo of how it should look properly installed that would be fantastic.
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Originally Posted by Bandit130
Mine has the metal line from pump run in front of block up to intake then rubber line to carb. I put pipe insulation from pump to top of intake on metal line in hopes to eliminate vapor lock.
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Mine was similarly situated. Before I replaced the fuel pump it was super close to the block, sandwiched between it and the alternator bracket. I wrapped it with insulation and now it runs more freely around the alternator. Good call.