Diagnose - 2,500 rpm Stumble Miss - 1991 8k mile ZR-1 - ZR-1 Net Registry Forums

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Diagnose - 2,500 rpm Stumble Miss - 1991 8k mile ZR-1

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03-04-2013	#11
secondchance Join Date: Aug 2006 Location: McLean, VA Posts: 3,723	Re: Diagnose - 2,500 rpm Stumble Miss - 1991 8k mile ZR-1 Bert, It sounds like your secondary fuel pump is on its way out. You can get Suburban 454 fuel pumps and strainers $80/each. I would just replace both pumps - about $160. When I get home I'll post part numbers and website. It took me about an hour to replace mine.

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2500 rpm, fuel pump, hesitation, stumble

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