You were very helpful thank you for sharing your expertise!

Best LS Oil Pressure Video out there!

Great video. Ill be looking at some of the areas and hoping it a simple o-ring fix. Cranks up and is a 24psi on cold start then drops to 15psi after being warmed up. Drives fine no noise. After a long drive start hearing lifter noises and the idle gets rough. Hoping i dont have to replace the engine.

That tig work just pretty 😍 ls platform go down in history. But the plaid probably drove to and from track 😂

i am at this stage with a 2013 AFM DOD lt silverado and just found the #4 intake lifter collapsed and inspected the cam and saw 'spalling' on it the lifter roller itself is just collapsed solid with the beginning of drag spalling on the roller so <eye roll> 123k miles but at 100k i was getting random 1-3 times a year stabil track auto disabling and had no idea why. when you get stabil track and traction control disabling, your about to lose oil pressure within 10-300 miles. i had a 2000 silverado also that had lifter noise on warm up, now i know why the original owner took it to the dealership and traded it in, i bet he took it to service first and heard the price tag on the repair and just decided the trade in value was better on a new truck. i still have that truck bought it with 113k and it's got 320k on it, but at 280k it was getting misfires and the lifter noise was alot more constant, but i knew nothing and just changed the oil which came out fine but started to get black before 3k miles. lucas high mileage synthetic helped it with the lifter tick since 150k when i first decided to see if that would help which it did considerably. idr why but the synthetics are just more slippery and for longer than conventional and keep the oil golden for longer. now i know what it means after watching a few of these afm dod issue videos, that's the first sign you have a lifter beginning failure the stabil trak warnings. normally i shut that stuff off when i start up in the winter because i'm a snow plow driver and i know how to drive in snow better than those woman driver aids can help, which actually interferes with compensating in snow and ice. but they are great for woman drivers because the feedback will scare the living hell out of them and make them slow down keeping them out of the ditch mostly. i drive like an old grandpa or F1 driver kimi riakkonen depending upon the traffic.

I had the same problem,on number 7 cylinder, I taking everything apart.the lifters worm down and cam.I tell everyone having this issue, please replace cam , lifters,time chain and oil pump,Mt truck is 2008 Silverado 4.8 with 250000 miles.Im back rolling now these are some good engine .16 years I had my truck

I had the same problem,on number 7 cylinder, I taking everything apart.the lifters worm down and cam.I tell everyone having this issue, please replace cam , lifters,time chain and oil pump,Mt truck is 2008 Silverado 4.8 will 250000 miles.Im back rolling now

Thank you for the video 😊

Comical and informative all at the same time. Thank you so much for making this video. It really helps a lot to know what you're heading into before you head into it.

Do you notice any piston slap with 2618 pistons on cold starts? I want to do something similar on my 3v supercharged with a Paxton blower. Need help in deciding on 2618 or 4032 forgings? Thanks

Do not lap titanium valves

an 8 sec ext cab.. badass

I have a 03 Silverado 2500 6.0 and it’s only got 150k on it and it’s always at 25psi hot or cold idle. No matter how hard you hit the gas it barely climbs past 40. When cruising around it’s like 30-35psi fluctuating slowly.

Man your content is great…. lol I’m selling all my LS vehicles and going Toyota for my daily s ….

The best most informative video on utub about oil pressure issues,and man i have watched a LOT of them while trying to figure out my issue on 5.3silverado.. THANK YOU!!

I have a question about the priming of the pump. Will this type of (gear pump) pull oil up the pickup tube on its own? I have an 8.1L (496cu.in.) Vortec in a 2001 Silverado Dually. Some idiot tried sabotaging the engine by stabbing the oil filter. Before putting the new oil and filter on, I took the drain plug out to drain any old oil. Nothing came out. Also, I should have mentioned how I found the issue. I was backing the truck up after being parked for a couple of days. Then the chime went off rapidly warning me and I immediately saw the information display lit up red saying severe oil pressure loss and low oil level. I immediately shut the engine off and coasted it about 15 feet back to where it was parked. I filled the new filter with clean synthetic oil and filled the engine with the 7-something quarts it normally holds. I got the thinking that maybe the pump will not create a suction to draw oil up into the pump. I have seen several videos using a garden sprayer pump to prime the pump and the entire oil system. The port that they use is the one on the drivers side front of the block. Well, that's easy when you have a block on an engine stand. So, I found a plug at the back of the block that appears to be in line with the front plug. It's near the filter. It has a square hole for a four-sided bit to go into. It is a square 8 mm bit that fits it. This plug is stuck in the block hard. It's in a hard-to-reach place with an exhaust manifold connection right where you need to put your ratchet/breaker bar. So, the other idea is, I decided to go through the oil pressure sensor port. Then, more thinking I did! 🤔 😂 Will pressurized oil get down towards the pump from this port? I think the "barbell-dogbone" may prevent oil from going in that direction. I think it keeps the oil in the upper half of the engine from running back into the pan each time you shut off the engine. That would mean that my idea of priming through the sending unit port is not going to work. I did take all the spark plugs out and I cranked it over watching the oil pressure gauge and didn't see it come up. I may not have done it long enough. A video with a guy from GM says it takes a while and even tells you to let the starter cool off in between. I drained about 3 quarts of oil to allow for pressuring it with the garden sprayer and I noticed that the oil is fairly dark and it's making me think that it was pumping oil during the cranking. I think what I am going to do next like right now! Is unscrew the new filter that was filled with new oil and dump it into the clear plastic tote thing I used, and see if the oil is dark at all like it's mixed with residual oil in the engine. If it's anything but clear clean oil then it's pumping and hopefully, when I start it, everything should be good. I'm long-winded too! 😂 Maybe you can suggest or tell me if the pump had enough residual oil or if the block would have enough to run back into the pump to be able to draw it through the pickup tube. It never made any engine noise like lifters. I shut it down immediately when the loss of pressure happened. I'm positive it didn't do damage and the truck wasn't under power other than idling in reverse. Great video and I learned a bit about the ports/plugs for the oil system through your video. I think the engine you have in the video has a little different plugs around the oil filter area but I guess the systems are the same as far as the routing through the block. Thanks again for your great video! 👍👍👍

Man you are a awesome teacher... Thank you !!!!

Man great video just found your channel love that u x plain what happened and why I got 04 GMC Sierra 5.3 alarm light come the dash an stay on don't affect the driven afraid it's not going to let it crank one day is there a way to reset r something don't want to disable it thanks. Got a new subscribe here bro✌️🦐

Just get a dial indicator and measure the lift vs a known good cylinder barring the engine over by hand no need to remove the rockers and do all that

excellent video.

Mine has a noise like forged piston slap with a very minor squeek... the noise sometimes comes and goes which is very strange and my oil pressure sometimes drops below 15psi when you're idling but at 2000 RPM comes right back up to 45...

What state do you live in? I want you to rebuilt my engine

What a fantastic video, subbed and shared I'll be watching this several times.

Made in china cams??

So I have a 2007 NBS Silverado 1500, I had a 6.0 L76, put in it by some hacks, they intentionally didn’t put a oil pan with a sensor I realize now, I replaced it & low oil alarms is going off, I hear a little valve chatter so I’m going to drop the oil pan & look deep to see if I see crank bearings are jumping out. God I hope it’s not the case, if it’s not then I’ll replace all the other components for peace of mind. It’s seems though I don’t have to remove and axles though just the cross member

There's updated cam bearings that are .775" wide from durabond.

No check engine light? I have a chirping noise once the engine is warm. It's been like that for a year and I just recently past a Echeck. This is on a L77 6.0 I swear it's coming from the Bell Housing. The shop told me today their not sure what but it's coming from my motor. No check engine light at all.

06 GMC Sierra 1500 4x4 5.3L 8th digit T 180,000 runs good morning lifter tic but goes away oil pressure 70-80 when mash the accelerator for a min to pass oil pressure drops to 0psi let off accelerator oil is back to 80. This only happens about 30sec during downshift acceleration let up and stays at 80 for all other driving conditions….O ring…???

Yeah I think it only pays 1.3 hrs

Thanks for 'splainin' it. I'll attempt to fix mine sometime in the near future.

I did another engine swap 2005 Suburban 6.0L 400,000km Ran Strong and Smooth CAM Bearing Moved... Replacement Engine was a Hard Frontend Collision 2001 Pickup 6.0L 250,000km Broken Oil Pan & Transmission, it was pulled and sat for many years... Cleaned and used 2005 Oil Pan, pickup tube and New O-ring... RAN Great Oil pressure came up to 1/2 and 3/4 at high revs... 2 miles down the road LOST Oil Pressure down to 1/4 or less :( ........ AHHH I should be Bald.... Cluster Gauge ?? Sender Unit ?? Stuck Oil Pump ?? Worst Case CAM Bearings Moved... If that's the Case its getting NEW CAM and 706 Heads replacing the 317 Heads and New Melling's Oil Pump... 45 years Auto-Body... I got a 2007 5.3 Classic Truck seized Motor at 250km with 5.3 150km engine Swap Next :)

Thanks Boss.

Thank you for the video very helpful I replaced oil pump high-volume pickup tube oil pressure sensor and screen check my cam bearings when I had my oil pan off everything look good have no noise no lifter taps put an external gauge on cold start 80 lb of oil pressure at the prime porthole wear your pump is warmed up to 210 idled at 59 lb of oil pressure but when I drive down the freeway the oil pressure in gauge in the car slowly descends to zero still have no engine noise whatsoever turn off car restart immediately oil pressure gauge and car says I have oil pressure again this don't make no sense.

Dealing with the same problem have a beautiful loaded trimmed 06 with 2200 on it and it sounds like hell

Would’nt it be equally or less expensive, to just put a new engine in the truck ?

thank you for your video, it was very helpful.

Don’t forget the lifter oil holes. They can also malfunction

Man I wish I had seen this before I put my truck back together. And damn this is really bad filming you should at least cut the crazy places.

Going through this now on a 2011 Silverado aluminum block. I replace the screen couple years ago and I’ve put three send units in it since I’ve had it. It’s always favored lower pressure. I have a manual oil pressure gauge coming, but I’m not sure if that’s the correct thing to try since it will be on the port closest to the oil pump correct? I didn’t realize a lot of these problems existed on the newer engines. The truck I had before this was a 2000 model. I tore the engine down on the front to put a new O-ring on the pick up. Then I realized cam lobe had wore down. I go to pull the cam to replace it and realize the bearing had seized on the rear cam journal. So I scrap that engine replaced it with salvage yard unit with lower miles. I probably wouldn’t have bought this truck and I known the same issues existed. But this and will drop down to about 20 pounds at an idle when warm. But once in a blue moon, it will drop even lower, causing all kinds of indicator lights, telling me to shut the truck off. I will shut it off, then when I restart it, the oil pressure looks good or as good as it usually is with no warnings. Never really hear a lift or tick or anything. What would you recommend? I’m not above trading this thing off but what sucks is I was getting ready to pay it off

Had this noise on my LM7 04 5.3, lobe and lifters were fine, noise was intake valve seat recession, replaced heads and job done

If I had to pull the Cam bearings I would not mess with fixing it might as well spend the money toward a new engine. I have a 2003 with 175k on a 4.8l has low oil pressure and I found out it had some sludge in the oil pan when I fix a rear main seal. I baught the truck for 6k because the body and interior are in mint condition from being garaged. One of the previous owners did not do maintenance like he should have. Anyway cleaned all that out and replaced the Oil Pressure sending unit that was buried to 80 and would not budge. Once I replaced the sensor it would read low oil pressure. It might just be the pick up tube O'Ring or the Camshaft bearing, but with that many miles and the cost to fix whatever is wrong now I might as well put a new engine in it and drive it for many more years. It is better than any truck being made right now IMO:P

You are a master

Can you just put a T in the oil cooling line and force oil from an attached 2 quart oil tank using air pressure into the entire motor.

How much would you say you have money wise into bearings and rings and stuff when you fix a 6.0 block after a cam bearing walks out?

What is part number for cam bearings you use

What is the approximate cost for a DIYer. To go as far as you did to fix the cam bearing?

Im having the same problem als, but im burning oil. No one seems to know whats going on. I dont want to get ripped off.

Thanks for the video. I have a 2000 6.0 it has 20 to 25 psi at idle when cold. If I drive the truck it will go up to 35 maybe 40 them go back down at idle. Once the motor is hot the pressure will go to 0 at idle. I’ve already changed the pump and o ring and that didn’t fix it any thoughts on this. The lifters also make a ticking sound

Cost for a complete rebuild?

I must be dense, but since the cam is just opening/closing a valve and even when in this failed condition it is opening/closing valve just not as high lift as should be, how does the miss show up on a scan tool? I thought scan tools interfaced with ECM and electronics, like an injector or coil, how does it show a miss from the lowered compression (I assume)? Thanks.