|
|
Content .. 1468 1469 1470 1471 ..
CONDITION POSSIBLE CAUSE CORRECTION ENGINE MISSES ON 1. Dirty or incorrectly gapped spark 1. Set gap as needed or replace 2. Contamination in Fuel System. 2. Clean fuel system and replace 3. Burned, warped, or pitted valves. 3. Replace valves. 4. Faulty coil(s). 4. Test and replace as necessary. ENGINE MISSES AT HIGH SPEED 1. Dirty or incorrect spark plug gap. 1. Set gap as needed or replace 2. Faulty coil(s). 2. Test and replace as necessary. 3. Dirty fuel injector(s). Test and replace as necessary. 4. Contamination in fuel system. 4. Clean system and replace fuel ENGINE DIAGNOSIS - MECHANICAL CONDITION POSSIBLE CAUSES CORRECTION NOISY VALVES 1. High or low oil level in 1. Check and correct engine oil 2. Thin or diluted oil. 2. Change oil to correct viscosity. 3. Thick oil 3. (a.) Change oil and filter. (b.) Run engine to operating (c.) Change oil and filter again. 4. Low oil pressure. 4. Check and correct engine oil 5. Dirt in tappets/lash adjusters. 5. Replace rocker arm/hydraulic 6. Worn rocker arms. 6. Inspect oil supply to rocker arms. 7. Worn tappets/lash adjusters. 7. Install new rocker arm/hydraulic 8. Worn valve guides. 8. Ream guides and install new 9. Excessive runout of valve seats 9. Grind valve seats and valves. 10. Missing adjuster pivot. 10. Replace rocker arm/hydraulic 9 - 1904 ENGINE - 2.7L DOHC - SERVICE INFORMATION LX |