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454 vortec has ticking noise from what seems to be vavle cover but can not diagnose

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This may also be a result of clogged injectors, buy a $8 bottle of injector cleaner and try that, its the cheapest fix to start with. Good luck

Posted on Nov 20, 2009

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Sound like valve lifters.change engine oil and filter.dirt get trap in valve lifter causing them to be noisey.

Posted on Nov 20, 2009

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My engine has intermittent lifter rattling what could be the problem


Chevy Vortec lifter & valve tap how to repair it - YouTube

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any idea weather its a rod bearing or a lifter or even summin else? the service engine light is on because i have the air intake off. Just did an oil change ... ... Up next. Engine Knocking or Ticking?!? This Could Be Your "FIX" ...

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repairpal.com > Problems > Mazda > Mazda6


Jan 19, 2016 | Cars & Trucks

1 Answer

How do i fix my 2001 740i bmw it makes a ticking sound win idleing


could possibly be a lifter tapping (Ticking) ,depending on how many miles the vehicle has on it might be time for lifters to be adjusted,most foreign overhead cam engines must have lifters adjuster periodically ,if you turn on the air its puts more of a load on the engine causing a louder sound (also check oil level an engine low on oil will start to tick too.. the more wear the engine gets the looser the lifters can get over time ,look in your service manual if you have one and see what the intervals are on lifter adjustment this can give you an idea.
possible only if
the ticking sound is coming from the top of the engine usually comes from under the vavle covers where the lifters are located,

Aug 19, 2015 | BMW Cars & Trucks

1 Answer

Engine is ticking/knocking 2003gmc envoy inline 6 vortec any known problems,or just normal vortec tick?


<shrugs> yes and no, maybe

put up a youtube video on it

main thing is your check engine light on or any trouble codes?

oil changes and keep en eye on the level; too low and / or dirtly oil may exhibit more noise than normal

Apr 01, 2015 | 2003 GMC Envoy

1 Answer

1999 dodge intrepid 2.7L I had a pretty loud tick


Valve covers are not made of plastic. They are either stamped mild steel or cast aluminum. It is very unlikely that whatever made the ticking sound would cause a valve cover to fracture without the engine misfiring noticeably or other serious issues occurring. Are you saying that since this "hole" appeared, the noise has stopped?

Judging from your description I would suggest having a qualified mechanic assess the problem before driving the car much further. If something has broken in the valve train and metal fragments have gotten into the oil it can cause catastrophic damage to the engine.

Oct 15, 2014 | Cars & Trucks

1 Answer

Lost compression and now there is a loud knocking noise in my 454 vortec engine


Bent valves would be number one cause. Check the timing. If you lost time, your valves are tapping the pistons causing the knock. When the valves tap the pistons they bend and don't close all the way, so the cylinders cant make compression.

Oct 17, 2012 | Chevrolet Chevy Cars & Trucks

1 Answer

When cranked: ticking noise, low oil pressure


I have a 2002 with 130,000 and it ticks,but goes away after 2 min,if yours continues to tick you may have a rocker arm that is getting lose or a lifter that is not pumping up.

Jan 21, 2010 | 1998 GMC Sierra

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