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What should the fuel pressure be on a 1991 suburban and with the key on should it build pressure and then drop to zero.?
Updated: 12/21/2022
Wiki User
∙ 15y agoBest Answer
Fuel pressure should read no less then 9 LBS. and no more then 13 LBS.
And yes it should hold the pressure with key on, engine off.
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∙ 15y agoThis answer is:
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