Index Chrysler Chrysler TOWN & COUNTRY, VOYAGER, Dodge Caravan - service repair manual 2001-2007 year
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CONDITION POSSIBLE CAUSES CORRECTION OIL CONSUMPTION OR SPARK 1. PCV system malfunction. 1. Check system and repair as 2. Worn, scuffed or broken rings. 2. Hone cylinder bores. Install new 3. Carbon in oil ring slots. 3. Install new rings. 4. Rings fitted too tightly in grooves. 4. Remove rings and check 5. Worn valve guide(s). 5. Replace cylinder head assembly. 6. Valve stem seal(s) worn or 6. Replace seal(s). DIAGNOSIS AND TESTING - ENGINE OIL LEAK Begin with a thorough visual inspection of the engine, particularly at the area of the suspected leak. (1) Do not clean or degrease the engine at this time because some solvents may cause rubber to (2) Add an oil soluble dye (use as recommended by manufacturer). Start the engine and let idle for (3) Using a black light, inspect the entire engine for fluorescent dye, particularly at the suspected area (4) If dye is not observed, drive the vehicle at var- ious speeds for approximately 24 km (15 miles), and (5) If the oil leak source is not positively identified at this time, proceed with the air leak • Disconnect the fresh air hose (make-up air) at the cylinder head cover and plug or cap the nipple on • Remove the PCV valve hose from the cylinder head cover. Cap or plug the PCV valve nipple on the • Attach an air hose with pressure gauge and reg- ulator to the dipstick tube. CAUTION: Do not subject the engine assembly to • Gradually apply air pressure from 1 psi to 2.5 psi maximum while applying soapy water at the sus- • If the leakage occurs at the crankshaft rear oil seal area, refer to the section, Inspection for Rear (6) If no leaks are detected, turn off the air supply. Remove the air hose, all plugs, and caps. Install the (7) Clean the oil off the suspect oil leak area using a suitable solvent. Drive the vehicle at various NOTE: If oil leakage is observed at the dipstick tube T Stud & Bearing Mount (press fit tube applications only), and for O-ring style tubes, INSPECTION FOR REAR SEAL AREA LEAKS Since it is sometimes difficult to determine the source of an oil leak in the rear seal area of the If the leakage occurs at the crankshaft rear oil seal area: (1) Disconnect the battery. 9 - 82 ENGINE 3.3/3.8L RS ENGINE 3.3/3.8L (Continued) |