When does the engine knock noise go away?
Some of the above vehicles may exhibit an engine knock noise that begins in the first 19,000-24,000 km (12,000-15,000 mi) of use. The knock noise is most often noticed during initial start-up and typically disappears within the first 5-30 seconds (may last longer in extreme cold temperatures).
Why does my engine make noise when I Turn on the oil?
Hydraulic lifters allow the valve lift to increase with engine rpm by filling up with oil as the oil pressure rises. The oil inside pushes the rocker arms further away from the camshaft, which causes the valves to open further. Oil pressure failures are usually at the root of lifter tapping, also known as lifter collapse.
Why does my car make a knocking noise when I Turn on the heat?
This noise may be caused by an interaction between carbon that has formed on the piston, the piston motion and the cylinder wall. GM Powertrain Engineering, and an analysis of engines with this condition, has confirmed that the noise is not detrimental to the performance, reliability or durability of the engine.
Why does my 5.3 liter Vortec make a ticking noise?
Causes of Startup Noises in a 5.3L Vortec Valve Lifter. Lifter tick is a common occurrence in V-8 engines like the Chevy 5.3-liter Vortec. This ticking sound is caused by the valve lifters, which are filled with oil during engine operation.
What to do when your GMC Yukon makes a noise?
If you want to test if this is the noise, than let your engine get nice and warm to were you hear that noise than bring your rpm up to about 2500 rpm (in park) and hold it. depending on the outside temp the noise should go away as the radiator gets cooled off and the fan clutch releases.
Are there any problems with the GMC Yukon?
GMC Yukon owners have reported 13 problems related to engine clicking and tapping noises (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of GMC Yukon based on all problems reported for the Yukon.
How long does the GMC Yukon engine ticking last?
Engine ticking on startup, lasts for 5 minutes currently – longer on cold starts or after letting the car sit overnight. Progressively has gotten louder and longer in duration since reporting the failure last year to the dealership.
Causes of Startup Noises in a 5.3L Vortec Valve Lifter. Lifter tick is a common occurrence in V-8 engines like the Chevy 5.3-liter Vortec. This ticking sound is caused by the valve lifters, which are filled with oil during engine operation.