Engine Noise on Start-Up, but Only Lasting a Few Seconds
|
|
Engine Noise on Start-Up, but Only Lasting a Few Seconds
|
|
Cause
|
Correction
|
Incorrect oil filter without anti-drainback feature
|
Install the correct oil filter.
|
Improper oil viscosity
|
|
2.
|
Install the correct viscosity oil.
|
|
High valve lash adjuster leak down rate
|
Replace the lash adjusters as required.
|
Worn crankshaft thrust bearing
|
|
1.
|
Inspect the thrust bearing and crankshaft.
|
|
2.
|
Repair or replace as required.
|
|
Damaged or faulty oil filter by-pass valve
|
|
1.
|
Inspect the oil filter by-pass valve for proper operation.
|
|
2.
|
Repair or replace as required.
|
|
Malfunctioning camshaft position actuators - improper oil viscosity or contamination. The result is camshaft actuator locking pin does not lock
|
|
1.
|
Verify correct engine oil viscosity by changing the engine oil and filter. Reevaluate the concern.
|
|
2.
|
Isolate the noise to a specific camshaft position actuator.
|
|
3.
|
Replace the camshaft actuator, oil and filter.
|
|
