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Re: 97 Blazer dist question.
Have you checked fuel pressure and leakdown? Low fuel pressure can cause hard starting, misfire, hesitation, backfire, induction and the list goes on....
Key on, engine off, fuel pump running: fuel pressure must be 60psi to 66psi. After the fuel pump shuts off, fuel pressure must remain above 55psi for 3 to 5 minutes.
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