Cuts Out, Misses. GMC Truck GMC K Pickup

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2000 🢒 GMC K Pickup - 4WD 🢒 Engine 🢒 Engine Controls - 6.5L (L65) 🢒 Cuts Out, Misses

Checks

Action

DEFINITION: A constant jerking that follows the engine speed, usually more pronounced as the engine load increases which is not normally felt above 1500 RPM or 48 km/h (30 mph). The exhaust has a steady spitting sound at idle, low speed, or hard acceleration for the fuel starvation that can cause the engine to cut-out.

Preliminary Check

Refer to Symptoms .

Engine Mechanical Checks

•	Perform a cylinder compression check. Refer to Engine Compression Test in Engine Mechanical.

•	Check the engine for the following:

-	Improper valve timing

-	Bent pushrods

-	Worn rocker arms

-	Worn camshaft lobes

-	Broken or weak valve springs, refer to Valve Train Diagnosis in Engine Mechanical.

•	Check the intake and exhaust manifold passages for casting flash. Refer to Intake Manifold Cleaning and Inspection or Exhaust Manifold Cleaning and Inspection in Engine Mechanical.

Fuel System Checks

•	Check the fuel system for a plugged fuel filter, low fuel pressure, air in the fuel system, etc. Refer to Fuel Supply System Check .

•	Check for water contamination in the fuel. Refer to Contamination Testing .