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HOMESERVICE MANUALSDODGE AND RAM2016CHALLENGER R/T PLUS SHAKER, ENG CD EZCREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 2 (6.2L ENGINE (SERVICE INFORMATION))DIAGNOSIS AND TESTINGENGINE MECHANICAL DIAGNOSIS CHARTNOTES
2016 Dodge and Ram Challenger R/T Plus Shaker, Eng CD EZC

Engine Mechanical Diagnosis Chart: Notes

2016 Dodge and Ram Challenger R/T Plus Shaker, Eng CD EZCSECTION Notes
WARNING: This page is about a different variant/trim than selected.
CONDITION POSSIBLE CAUSES CORRECTION
ENGINE NOISE 1. Worn accessory drive belt 1. Check for belt damage and alignment
Refer to BELT, SERPENTINE, DIAGNOSIS AND TESTING .
2. Worn coolant pump 2. Check for possible coolant leak. If OK, Check the pulley and input shaft for wear. Replace as necessary.
3. Worn generator 3. Check the pulley for wear. Spin the armature. Replace as necessary.
4. Idler/Tensioner pulley 4. Check pulleys. Verify bearing noise. Replace as necessary.
5. Power steering pump (if equipped) 5. Check the pulley and input shaft for wear. Replace as necessary.
6. Flywheel/Flexplate 6. Check for wear or possible cracking. Check bolts. Repair as necessary.
NOISY VALVES/LIFTERS 1. High or low oil level in crankcase. 1. Check for correct oil level. Adjust oil level by draining or adding as needed.
2. Thin or diluted oil. 2. Change oil. Refer to STANDARD PROCEDURE .
3. Low oil pressure. 3. Check engine oil level. If OK, perform oil pressure test. Refer to DIAGNOSIS AND TESTING .
4. Dirt in hydraulic lifters. 4. Clean/replace hydraulic lifters.
5. Bent push rod(s). 5. Install new push rods.
6. Worn rocker arms. 6. Inspect oil supply to rocker arms and replace worn arms as needed.
7. Worn hydraulic lifters. 7. Install new hydraulic lifters.
8. Worn valve guides. 8. Inspect all valve guides and replace as necessary.
9. Excessive runout of valve seats or valve faces. 9. Grind valves and seats.
CONNECTING ROD NOISE 1. Insufficient oil supply. 1. Check engine oil level.
2. Low oil pressure. 2. Check engine oil level. If OK, perform oil pressure test. Refer to DIAGNOSIS AND TESTING .
3. Thin or diluted oil. 3. Change oil to correct viscosity. Refer to STANDARD PROCEDURE .
4. Excessive connecting rod bearing clearance. 4. Measure bearings for correct clearance with plasti-gage. Repair as necessary.
5. Connecting rod journal out of round. 5. Replace crankshaft or grind journals.
6. Misaligned connecting rods. 6. Replace bent connecting rods.
MAIN BEARING NOISE 1. Insufficient oil supply. 1. Check engine oil level.
2. Low oil pressure. 2. Check engine oil level. If OK, perform oil pressure test. Refer to DIAGNOSIS AND TESTING .
3. Thin or diluted oil. 3. Change oil to correct viscosity. Refer to STANDARD PROCEDURE .
4. Excessive main bearing clearance. 4. Measure bearings for correct clearance. Repair as necessary.
5. Excessive end play. 5. Check crankshaft thrust bearing for excessive wear on flanges.
6. Crankshaft main journal out of round or worn. 6. Grind journals or replace crankshaft.
7. Loose flexplate, flywheel or torque converter. 7. Inspect crankshaft, flexplate, flywheel and bolts for damage. Tighten to correct torque.
LOW OIL PRESSURE 1. Low oil level. 1. Check oil level and fill if necessary.
2. Faulty oil pressure sending unit. 2. Install new sending unit.
3. Clogged oil filter. 3. Install new oil filter.
4. Worn oil pump. 4. Replace oil pump assembly.
5. Thin or diluted oil. 5. Change oil to correct viscosity. Refer to STANDARD PROCEDURE .
6. Excessive bearing clearance. 6. Measure bearings for correct clearance.
7. Oil pump relief valve stuck. 7. Remove valve to inspect, clean and reinstall.
8. Oil pickup tube loose, broken, bent or clogged. 8. Inspect oil pickup tube and pump, and clean or replace if necessary.
9. Oil pump cover warped or cracked. 9. Install new oil pump.
10. Faulty or missing piston cooling jets. 10. Replace piston cooling jets.
OIL LEAKS 1. Misaligned or deteriorated gaskets. 1. Replace gasket.
2. Loose fastener or broken or porous metal part. 2. Tighten, repair or replace the part.
3. Front or rear crankshaft oil seal leaking. 3. Replace seal.
4. Leaking oil gallery plug or cup plug. 4. Remove and reseal threaded plug. Replace cup style plug.
EXCESSIVE OIL CONSUMPTION OR SPARK PLUGS OIL FOULED 1. PCV System malfunction. 1. Refer to VALVE, POSITIVE CRANKCASE VENTILATION (PCV), REMOVAL .
2. Defective valve stem seal(s). 2. Repair or replace seal(s).
3. Worn or broken piston rings. 3. Hone cylinder bores. Install new rings.
4. Scuffed pistons/cylinder walls. 4. Hone cylinder bores and replace pistons as required.
5. Carbon in oil control ring groove. 5. Remove rings and de-carbon piston.
6. Worn valve guides. 6. Inspect/replace valve guides as necessary.
7. Piston rings fitted too tightly in grooves. 7. Remove rings and check ring end gap and side clearance. Replace if necessary.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.