Knocks on Start-Up but Only Lasts a Few Seconds. GMC Truck Jimmy

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 1997 🢒 Jimmy - 2WD 🢒 Engine 🢒 Engine Mechanical - 4.3L 🢒 Knocks on Start-Up but Only Lasts a Few Seconds

•	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.