2003 DODGE RAM spark plugs replace

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Page 1475 of 2895

DODGE RAM 2003  Service Repair Manual DIAGNOSIS AND TESTINGÐENGINE DIAGNOSIS - PERFORMANCE
PERFORMANCE DIAGNOSIS CHARTÐGASOLINE ENGINES
CONDITION POSSIBLE CAUSES CORRECTION
ENGINE WILL NOT CRANK 1. Weak or dead battery 1. Charge/Replace

Page 1476 of 2895

DODGE RAM 2003  Service Repair Manual CONDITION POSSIBLE CAUSES CORRECTION
12. Faulty ignition coil 12. Test and replace, as necessary (Refer
to 8 - ELECTRICAL/IGNITION CONTROL/
IGNITION COIL - REMOVAL).
ENGINE STALLS OR
ROUGH IDLE1. Carb

Page 1478 of 2895

DODGE RAM 2003  Service Repair Manual CONDITION POSSIBLE CAUSES CORRECTION
4. Excessive main bearing clearance 4. Measure bearings for correct
clearance. Repair as necessary
5. Excessive end play 5. Check crankshaft thrust bearing for
exc

Page 1479 of 2895

DODGE RAM 2003  Service Repair Manual DIAGNOSIS AND TESTINGÐENGINE DIAGNOSIS - LUBRICATION
CONDITION POSSIBLE CAUSES CORRECTION
OIL LEAKS 1. Gaskets and O-Rings. 1.
(a) Misaligned or damaged. (a) Replace as necessary.
(b) Loose fasteners

Page 1480 of 2895

DODGE RAM 2003  Service Repair Manual DIAGNOSIS AND TESTINGÐCYLINDER
COMPRESSION PRESSURE
The results of a cylinder compression pressure test
can be utilized to diagnose several engine malfunc-
tions.
Ensure the battery is completely cha

Page 1493 of 2895

DODGE RAM 2003  Service Repair Manual If a large combustion/compression pressure leak
exists, bubbles will be visible in the coolant.
COOLING SYSTEM TESTER METHOD
WARNING: WITH COOLING SYSTEM TESTER IN
PLACE, PRESSURE WILL BUILD UP FAST.

Page 1603 of 2895

DODGE RAM 2003  Service Repair Manual DIAGNOSIS AND TESTINGÐENGINE DIAGNOSIS - PERFORMANCE
PERFORMANCE DIAGNOSIS CHARTÐGASOLINE ENGINES
CONDITION POSSIBLE CAUSES CORRECTION
ENGINE WILL NOT CRANK 1. Weak or dead battery 1. Charge/Replace

Page 1604 of 2895

DODGE RAM 2003  Service Repair Manual CONDITION POSSIBLE CAUSES CORRECTION
12. Faulty ignition coil 12. Test and replace, as necessary (Refer
to 8 - ELECTRICAL/IGNITION CONTROL/
IGNITION COIL - REMOVAL).
ENGINE STALLS OR
ROUGH IDLE1. Carb
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