Quote:
Originally Posted by silvertip67
like many times it is probably more than one thing going on at the same time...
loss of power sounds like a vacumn leak like you already diagnosed ( especially if you can hear it) ...maybe when it gets warmer it opens up cracks that may be tight when cooler?? an older body might have been tweaked rebuilding?
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the vacuum leak sounds like its coming from INSIDE the carburetor, so not really a leak but just a malfunction in the air circuitry inside the carb.
I don't think my truck has that filter under the tank, but i'll look for it. the tank had some fuel in it for 30 years since the po converted it to propane, but i replaced the gas lines and cleaned out the tank, so there shouldn't be any old sludge, plus once again, it ran fine last summer.