Forum Discussion
DougE
Jun 18, 2015Explorer
It's possible this MH started out with a TBI system and was converted to a carburetor. I had a '91 454 P30 that was TBI and I had an '88 Suburban that was also TBI. If it started out as a TBI then he could very well still have the electric fuel pump in the gas tank. The mechanical fuel pump is then acting somewhat as a pressure regulator.
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