Love the way you explain stuff down to the bits you need to know and the things you might not work out for yourself without telling people stuff they probably know already. A real gift to us all.

Great vid. No unnecessary talking and good camera work. Small tip I might add is cover the oil returns before taking keepers off..JUST INCASE it’s drops and makes a run for one of the holes.

I like to use a little grease on the keepers to keep them on the valve before decompressing the spring. Nice video.

i love videos like these. makes my life easier when the pros show you how to get it done. then i don't feel like such an amatuer when taking my own stuff apart. thanks for helping me save money and make money fixing my friends and neighbors stuff. people tend to want to hold on to good running cars or trucks. why not? makes perfect sense to keep driving something that runs good.

Great video, very clear and concise directions and tips. Thank you I was worried it was going to be more involved than it actually is. With help from a mechanic friend i'm planning on tackling this later in the week.

I started working on engines around five years old, worked professionally for a while, have overhauls and ground up restorations under my belt, now a hobby, and I think your video is great!!!! You guys do a great job, really clear and you focus on the details really well with the video. Easy to follow uncluttered, Keep up the great work!!

Absolutely first class video - many thanks! Considering the vast knowledge that car mechanics need, they don't get paid anything like as much as they should.

A great video, thanks for posting. I am not that confident at mechanics but watching this beats hours of reading what you don't understand.

thank you guys,will be doing this my 94 suburban I like the way you explain the project .

He is one of the Best Master Tech I tune to help me educate in diagnosing end repairs on engines. A truly great teacher .

I have this same need, and this video pretty much told me exactly which tool to use, got that one, and how it's done. I had been told it was necessary to remove intake manifold, this video disproves that. Albeit, the left side two rear cylinders are a long reach, it seems by the time you get to that part, you should be getting pretty good with the Spring Compressor Assembly tool. Great video for this purpose.

Thanks!! I love that you can find these sorts of tutorials in here. This one was something I'd wanted to know because I'm having that issue now and it sure would be nice to take care of it myself

Great tutorial! I’ve read on different forums how everyone has a hard time with the keepers. The magnet worked perfect!! After the first cylinder I handled it like a boss!! Thank you, thank you!!

I'm doing this job on my 08 Silverado and have watched several how to videos. They've all been helpful but yours is the most complete. I have no idea how much I will be saving doing it myself but I'm sure it's at least $500 or so , if I do it right of course! Thank you so much for this.

A guy at my work taught me that after you install the valve keepers hit the top of the valve with a brass or plastic hammer to make sure they are installed correctly. If they aren't they go flying. Better than putting it all back together, starting the engine and having it happen.

Most Gen 1 Chevy small blocks didn't have seals on the exhausts because it's always under pressure, pushing the oil back into the V/C area, and the drip down after shut down wasn't much. That made those guides last a lot longer. Buick engines had little plastic umbrellas that rode up and down with the valve and never wore out, a genius design.

You guys made it look easy-peasy! Thanks for the tips!

Very well done, gentlemen, thank you for the video.

Thank you so much for the details I need this for my truck.

Awesome. The attention to detail is great. Thanks a bunch.

Great video. But one thing I would suggest to anyone doing this that it doesn’t say in the clip is to put a bit of oil in/on the seal otherwise you’ll end up with bad seals again in no time at all.

That was incredibly helpful guys- well done!

awesome video i have a smokey 4.3 and this video is great to show me how to change the valve seals.

This was exactly what I was looking for. Thank you!

Thanks for this! My 91 Chevy both need this!

its alot of good mechanic on here but you are about the best i have seen ..i wish i stay next door to you..

Should also mention to keep hands clear of all belts & pulleys. Some times the air in the cylinder causes the motor to turn over due to the air pushing the piston down. Just something to be aware of. Good video.But yeah, go behind the truck for personal adjustments!

what about putting the rockers back on? any special procedure? im watching other videos and people are doing it while the engine is running others are not. Whats the best way to reinstall the rockers and ensure the valves are adjusted? is there a video you can recommend?

Great video guys, very well done and professional :)

Great step-by-step video guys. A lot of help.

Hats off to you guys ! Very good video. Thank you

Thanks for sharing the information, you’re very kind people

Thank you for your informative videos. You saved me lots of money thanks.

great as always. one of the best automotive sites on you tube.

Now that was good explanation and video. My 2006 Camry needs new valve stems at 250,000 miles... reckon I should do it.

Thank you VERY much. I have always been afraid to do these until now.

That’s cool the fact you can do it like that but must be hell of a lot easier to do it out of the car

People like you are awesome. Nice video and thanks for sharing.

It's amazing, good technique, i appreciate that.

Great video, thank you for the educational information.

Thanks for the video. I have an 87 Iroc that needs new valve seals

The Air Thing is Brilliant Man.Great Video

Very informative, as always. Thanks for posting!

thank for that video, i found u guys at the right time.

If you happen not have shop air to do this kind of job, go get a spool of small nylon rope. This is acutally my perferred method. Bring the piston almost to TDC, then put a pretty good amount of the rope in the cylinder, but leave part of the rope hanging out of the spark plug hole to keep from having to fish it out of the cylinder. Then bring the piston to TDC. The piston will squeeze the rope against the valves, producing the same results as compressed air without risk of the engine turning.

dab of grease on the keepers helps on reinstall

120psi Use a plastic seal guide to protect the new seals, the tip of the valve and keeper grooves can get jagged or razor sharp...

Just what I needed to see, well made video

Good video..thanks for taking the time to educate us.

The only thing I would add is put the new seals in fresh oil or oil the valve stems to prevent premature wear to the seals

thanks much for this video, i forsee a valve seal replacement in my jeeps future

Great explanation thanks for sharing your knowledge

Awesome video. Thank you guys

Thanks for the informative video.

Good job, good tutorial, thank you.

older motors had ''umbrella seals'' they are in the same place but look like an umbrella. a smart tip to use if your engine is older or sat around much, is to check the height of your valve springs when they are off. good luck. :)

Awesome, thanks for this video!

Great demo guys!

Thanks a lot, bout to knock this out this weekend

Amazon has a camshaft seal tool set for R &R cam and crank seals. It is from Private Brand Tools. It looks real easy. It is for OHC engines. Also consider Big-sert kit from Amazon. It prevents blown out insert holes with regular inserts. This can prevent a huge problem later. It costs but its worth it. Hopefully it can be done with the engine IN the car. Get inserts from Amazon. They are various sizes. If you replace a insert that is regular size, use Time-sert, if it hasn't had an insert before

Nice informative video. Thanks!

nice job bro thanks for the tips i got mustang dint pass smog check thay say is the seal valve

Nice video. Need to tackle this on a 91 tercel. Have the book but so much better to see it 'in person'.

You will also need a compressor with enough output flow capability to constantly make up for any leakage past the rings and valves, especially in an older and worn engine. If not the pressure in the cylinder will constantly fall until it is all gone after the compressor's tank runs out. At that point you could drop the valve you are working on down into the cylinder.

Thanks sir this video reassured me I was quite capable of doing this job

thanks for that info helped me in my car problem.

i love your channel man thanx alot

Great video, well done.

Very helpful Thanks for the great advice I just got the subscribe button

Great video. thanks for posting.

Also if you do rotate the piston to TDC, don't forget to lock the crankshaft somehow. If you don't the air pressure could suddenly make the piston go down and spin the crankshaft. This will will eliminate the pressure inside cylinder, which could drop the valve.

Very helpful. Is it basically the same on the 5.7 vortec heads? I'm swapping the head gasket on a 99 suburban and will do this with the heads on the bench

if the car blows blue after being warmed up it is likely because the oil rings on the pistons are worn or have lost their tempering from overheating, then they no longer press out on the cylinders, recovering the oil back during each stroke.

@EMPIRE0FLIES Yes I have heard of using rope. I also heard that you can coat rope with grease before putting it in the cylinder if you need to clean the spark plug threads or install a thread busing such as a Time-Sert. You then fish the rope out with a wire hook. Any metal particles that drop into the cylinder will probably stick in the grease and be removed with the rope. Those shade-tree mechanics were inventive!

Great explanation!

Very cool and useful ! THANKS

Thanks for the video.

very good mechanic i learn alot from you thanks

thank you for teaching

great video, thanks for sharing that.

Carefull tapping the seal on, if you just move the valve a whisker you can lose pressure and drop a the valve...great vid though

@ 8:29 LOL. We all do it. Great vid!

Excellent video 👍

hey thanks for the video! i have a question. what another tool can I use to keep air in to the cylinder?

Thank you!!! Plug all oil return and push rods so the keepers doesn’t fall in the crankcase. Just saying .

Super job!

Where can I get that compressor? I got one from auto one and o Reileys and both of them just slip off the bottom of the spring

Goodson has valve tools and engine tools. OTC has tools. Kent-Moore has tools. Clothes-line can be used to hold the valves up. Use a soda straw to feed the string into the cylinder.

Get a radiator pressure tester from Amazon. It reads 30 lbs. It locates leaks quickly. Get adaptors if necessary.

Great video guys, Approximately what might I expect to pay to have, hopefully the Valve Seals. Replaced on my 1994 GMC Sierra extended cab 4x4 160k original miles, 2nd owner. North Myrtle Beach, SC? I won't hold you to an amount! 🙂

Doing mine in about 2 hours. Hoping all goes well =)

Great vid. thanks

Sticky nutsack at 8:31..other than that this is a very good video Duane..LOL!!!

just great, thank you...

I had a jasper engine that had a lot of valve train noise. Jasper replaced the engine and told me the cause of the engine noise was the "valve seals were beat out" . Would that have caused the noisy valves. It was tapping loud enough from cylinder 1 and 4 that I could hear it going 20 mph on the road. 2001 s10 4.3. It doesn't seem like valve seal would make tapping sounds.

do i have to adjust valve clearance after i put back the racker arms? hope you can shed info...thanks

Bad piston rings smoke all the time. Bad valve seals smoke only at startup after being stopped for a bit.

nice video man! thanks.

Hey guys, great video, mine is smoking bad when up to operating temp could that be valve guides too?

good work and good idea