|
|
Content .. 1207 1208 1209 1210 ..
CONDITION POSSIBLE CAUSE CORRECTION ENGINE LOSS OF POWER 1. Dirty or incorrectly gapped spark 1. Replace spark plugs. 2. Dirt or water in fuel system. 2. Clean system and replace fuel 3. Blown cylinder head gasket. 3. Replace cylinder head gasket. 4. Low compression. 4. (Refer to 9 - ENGINE - 5. Burned, warped or pitted valves. 5. Replace as necessary. 6. Plugged or restricted exhaust 6. Inspect and replace as DIAGNOSIS AND TESTING - ENGINE DIAGNOSIS - MECHANICAL CONDITION POSSIBLE CAUSES CORRECTIONS NOISY VALVES 1. High or low oil level in 1. (Refer to LUBRICATION & 2. Thin or diluted oil. 2. Change oil and filter. 3. Low oil pressure. 3. Check oil pump, if Ok, check rod 4. Dirt in lash adjusters. 4. Replace as necessary. 5. Worn rocker arms. 5. Replace as necessary. 6. Worn lash adjusters 6. Replace as necessary. 7. Worn valve guides. 7. (Refer to 9 - ENGINE/CYLINDER 8. Excessive runout of valve seats 8. (Refer to 9 - ENGINE/CYLINDER CONNECTING ROD NOISE 1. Insufficient oil supply. 1. (Refer to LUBRICATION & 2. Low oil pressure. 2. Check oil pump, if Ok, check rod 3. Thin or diluted oil. 3. Change oil and filter. 4. Excessive bearing clearance. 4. Replace as necessary. 5. Connecting rod journal 5. Service or replace crankshaft. 6. Misaligned connecting rods. 6. Replace bent connecting rods. 9 - 1432 ENGINE - 5.7L SERVICE INFORMATION WK |