L83 5.3L Lifter tick?

Silver2018 · March 10

I have a 2018 Silverado with the l83.

When the truck is cold it doesn't have any tick at all and sounds like it should, but when the truck gets at operating temperature, it starts ticking on the passenger side. I checked with a stethoscope and the sound came from cylinder 4 and 8. Right now I'm using 5w30 and the truck has 127k miles, AFM disabled by obd2.

Here's a video of the ticking noise after the truck was driven for 30 minutes: https://youtube.com/shorts/jFvwP1aVL84?si=IB-Ry-4wQTKcqq9N

Are my lifters bad?

CamGTP · March 11

Sounds more like injector tick than lifter tick. The direct injectors make a ton of noise on these trucks.

Even if that was lifter tick, I wouldn't even care because to me I've heard so much worse and those engines ran just fine.

If you had a bi-directional scan tool you can test the injector theory pretty easy. Just turn off each injector one by one and see if the tick noise on that side goes mostly away.

Silver2018 · March 11

4 minutes ago, CamGTP said:

Sounds more like injector tick than lifter tick. The direct injectors make a ton of noise on these trucks.

Even if that was lifter tick, I wouldn't even care because to me I've heard so much worse and those engines ran just fine.

If you had a bi-directional scan tool you can test the injector theory pretty easy. Just turn off each injector one by one and see if the tick noise on that side goes mostly away.

I appreciate your opinion. The truck runs like a dream! I'll try what you've said and see if that's the root cause of the tick.

PunchT37 · March 11

Check for spark plug wire arcing, exhaust leaks[broken manifold bolts] and maybe pull the valve cover and check for bad rocker bearings before diving in deep.

Silver2018 · March 11

13 hours ago, PunchT37 said:

Check for spark plug wire arcing, exhaust leaks[broken manifold bolts] and maybe pull the valve cover and check for bad rocker bearings before diving in deep.

Thanks for giving your opinion, I already checked the spark plug wires and exhaust manifold bolts. As a last resort, I'll remove the valve cover and check for bad rockers. I really hope it is a noisy injector. I was planning in a future do a DOD/AFM/VVT delete, but not right now