For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 1997 🢒 Blazer - 4WD 🢒 Engine 🢒 Engine Mechanical - 4.3L 🢒 Knocks on Start-Up but Only Lasts a Few Seconds

Knocks on Start-Up but Only Lasts a Few Seconds for Chevrolet Blazer - 4WD 1997

•	Improper oil viscosity. Install recommended oil viscosity for expected temperatures.

•	Excessive piston to bore clearance.

•	Excessive piston pin to piston clearance.

•	Excessive crankshaft end clearance.

•	Excessive crankshaft bearing clearance.