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runs rough-worse when cold
01 blazer 4.3 "w" runs rough w/cold, somewhat better w/hot- has no dtc's, no misfires on counter, injector balance & psi drop tests ok, fuel psi & volume good--had new plugs & secondary ignition replaced already...no intake or head gasket leaks, all data strea... Login to read more. 
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| Engine | 4.3 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
2001 Chevrolet Blazer LS 4.3L
| Engine | 4.3 L |
| Trans | 4-speed Automatic (Electronic) |
Video