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  1. J

    New to 6.2. Now it won't start; and if it does; it runs poorly until warm.

    Replacement for my 1973 400SBC Blazer is a 1989 GMC 6.2 Jimmy. Started easily and ran fine in Texas (rarely got below 70 degrees); but sat for about 5 years; and now has a hard time starting and running in Colorado (rarely gets above 70 degrees – don’t even try unless it’s above 65)...
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