What does cold start knock sound like on Chevy Silverado?
What does cold start knock sound like on Chevy Silverado?
Be aware that the radiator cooling fans may operate at any time. Cold start knock is generically called “piston slap,” which is common in Vortec engines. For the first 30 to 60 seconds after a cold start, the short-skirted pistons rock inside the cylinders and slap against the cylinder walls, sounding rather like a diesel 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.
Where does the lifter sound come from on a Chevy Silverado?
You can hear lifter click best around the top of the engine, and isolate the noise with a stethoscope against the valve cover. It will occur at idle and increases as you rev the engine, continuing even when the engine is warm. Valve lifter noise is detrimental and should be addressed quickly.
Why does my car make a ticking noise when I start the engine?
A loose piston pin, for example, causes a sharp double knock usually heard when the engine is idling, or during sudden acceleration then deceleration of the engine. A piston pin that has been improperly fitted will emit a light ticking noise that is more noticeable with no load on the engine.
What kind of engine makes noise during cold start?
These engines generate noises during cold start and during warm operation that technicians may not be familiar with. The new Small Block Gen 5 engine family incorporates Direct Injection (DI). This technology is included as standard equipment on all Generation 5 engines in the Small Block engine family which are the: 4.3L V6, 5.3L V8, and 6.2L V8.
Why does my GM Truck make a noise when I start it up?
These engines generate noises during cold start and during warm operation that technicians may not be familiar with. The latest generation of full-size trucks and utilities incorporate a new generation of technologies not previously seen in a GM full-size truck and utility applications.
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 car make a clicking noise when I start it up?
The sound may be more noticeable during a cold start, but lessens once the engine is warm. A slightly higher pitched clicking sound is the fuel injectors pulsing under the high fuel pressures.
What does it mean when your car engine rattles?
Engine rattling is never a good sign. However, there can be many different causes. If it rattles when idle, it can mean something completely different than engine rattle while accelerating. Depending on the cause, repair costs can shoot through the roof. Read more below to find out what the problem could be. FREE towing & pick-ups! No obligation.
When do you get paid for an engine rattling noise?
Get paid quick in as little as 24-48 hours! An engine rattling noise, or a clicking sound in an engine, can spring up from a number of sources.
How to know if your Chevy Silverado 1500 is rattling?
#1 always check your own oil even after you had it serviced. I only trust two things in this world myself and my dog and often I trust my dog more than myself. Start with the easy stuff first, loose exhaust, brake, fuel, cooler lines that maybe vibrating against frame,engine, trans, etc. Check heat shields.
Engine rattling is never a good sign. However, there can be many different causes. If it rattles when idle, it can mean something completely different than engine rattle while accelerating. Depending on the cause, repair costs can shoot through the roof. Read more below to find out what the problem could be. FREE towing & pick-ups! No obligation.
What to do about rattling column on GMC Truck?
If you have the updated green bearing, put a muffler clamp right above it and tighten. These two solutions get rid of the play in the column bearing and make everything nice and tight so there will be no more rattling. Its a cheap easy fix to make your truck much quieter since there will be no more rattling in the column.
Get paid quick in as little as 24-48 hours! An engine rattling noise, or a clicking sound in an engine, can spring up from a number of sources.
What does a flashing Mil mean on a Chevy Silverado?
The MIL may illuminate steady to indicate that a fault has been recorded and your Silverado appears to be unaffected. However, a flashing MIL is serious; this means that a misfire is sending raw gasoline to ignite inside—and possibly ruin—the catalytic converter.
Are there any problems with my Chevy Silverado?
Chevrolet Silverado owners have reported 18 problems related to engine clicking and tapping noises (under the engine and engine cooling category). The most recently reported issues are listed below. The contact owns a 2008 Chevrolet Silverado.
Why does my GMC Truck idle rough in the morning?
So the past couple months I’ve noticed my truck has a really rough idle in the mornings when it is cold out, to the point where it has even died before. I just replaced the plugs about 3 months back and it ran fine after, people have told me things like it is the o2 sensors to the cat is plugged up to my fuel filter is bad.
