Question about 1990 GMC Sierra

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Still starving for fuel after replacement of fuel line and filter.Getting gas to carb but will not stay running?

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1990. this should be throttle body injection, you didnt post engine size. Need to check fuel pressure at idle and under load, While driving under hard acceleration. On a carb fuel pressure should be between 4-6.5 psi at all times. TBI should be 9-13 psi. Also on the carbs there is a filter on the carb at the fuel inlet. Need a 1" wrench to remove the line and remove the internal filter.

Posted on Sep 11, 2010

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