I think you would direct more carb cleaner into the lifter by just spraying through the pushrods.

Be careful while using the red straw. If that comes of the nozzle while spraying it'll shoot right down into the engine.

excellent job. I drove thousands of miles on a faulty lifter and it ground up the cam shaft in my ls1. this video gave me a pretty decent push to fix my car without any worry.

Run lucas or seafoam first, if that don't work run 1/2 qt transmission fluid (drive vehicle a couple days on both methods). Usually have pretty good luck freeing up lifter(s), unless completely bad unit and don't have to pull valve covers. Can wait on oil change until regular interval too.

Cheaper and easier.
Happy wrenching.

God Bless you and yours.
God Bless our Real American Patriot Brothers and Sisters.
God Bless America Again.

The Real American Patriots.

I've poured a little transmission fluid down on the lifters and it fixed the noisy lifter problems

If you think of it in time you can pull the fuel pump relay and run it out of gas first. On the first start after doing this I will crank it with the starter until it develops oil pressure then insert the relay and start it first start. I will be doing this next week in hopes of getting #6 firing again. Thanks for the idea! I have been noticing slower pressure rise in the morning start causing it to knock. I may have to R&R the oil pickup Oring just to be sure the oil pressure will stay good till around 300.000. maybe.

Man, I got lucky...I just pulled the Valve covers , took my rubber nosed nozzle and shop air, and blew out the rocker-arm oil hole on every rocker-arm and wallah ...no more lifter click ...and oil-filter change adding Resoline to the oil ...!

This actually worked relatively well! It didn’t work right after I cleaned them but I replaced the gasket on the driver said and he’s really nulled that down to the lifters possibilly being clogged. Will probably do the passenger side as I still get a light tick when idling now

Great video!  Great play by play.  Made me realize how handy that book is and learned that there’s a tightening order.  I’m upgrading the valve cover to the new design style and I’ll run your procedure while I’m in there. Thank you for sharing your knowledge.

I have a 2002 Suburban LT, it knocks in the mornings when I first start it up, sounds like a badly adjusted tappet, but after 30 seconds it disappears. I got in touch with GM, I was told all 5.3 Vortex do it, it is something to do with the different metals used to manufacture the pistons. I used to have a Ford Cosworth that did exactly the same. There's no problem if the tapping clears once the engine warms up. Gus UK

Thanks for creating the video, it has given me the knowledge I need to fix my truck!

One of the best videos I saw good-looking bro keep the hard work up

Change your oil more often my truck has 208k miles no noise I change the oil every 3k miles now your way of doing will work as well. 👍🏼

Thanks for posting this. My 2005 5.3 has 105,000 on it now with no lifter or valve noises but I do get a whiff of burnt oil outside the truck after driving in aggressive traffic or at higher speeds. I figure it's probably time for new valve cover gaskets and this video showed me exactly what that will entail. I might consider doing this cleaning procedure as a preventive measure too while I have everything apart to replace the gaskets. Just makes sense to combine it all just before my next oil change.

I was getting ready for the straw to get shot out of the spray nozzle....my kind of luck..  I think I would just spray it down the rocker pushrod hole.  Or do some marvel mystery oil maintenance.

Probably the best video out there on this process. I do agree though that you could likely just spray through the rocker hole. Also was not expecting to hear Anti-Flag as the outro, but good addition lol

Very educational...thank you for all the step by step information

Great video brother I got to do my wife's Suburban so here I go.thank you and God bless....

Thanks for the vid !  I have a 2000 Silverado 5.3 with 308k. Runs great no issues but had to replace the trans one time.... Over the period of going 308k miles I have had the lifer tick and sometimes worse then others.... What I have done is just as you did except I did not remove the rocker arms. What I did was to make sure that your rocker arm is all the way up and spray carb cleaner right into the rocker hole in flows right down the push rod in to the lifter. Works great!  Thanks again!

Good advice, I had the problem with my v-6 vortec, I got rid of the noise but I could not get a ride to town for new oil and had to put back the old oil and the noise came back after 18 miles and never went away after despite repeating the cleanings.