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Re: 1995 Chevy Blazer LS Vortec VS Rough Starting
Check fuel pressure and leakdown rate. Ignition ON, (do not start the engine) fuel pump running during the 2-3 second "pump prime", fuel pressure must be 55psi to 61psi and must remain above 50psi for 10 minutes after the pump shuts off. Post your results.
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