99 GMC Sierra 1500 4.8 liter V8, oil leaks, Intake Manifold, Valley Cover

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  • Опубликовано: 8 мар 2017
  • In this video, I hunt down some oil leaks and talk about what I did while I had the Intake Manifold off.
  • Авто/МотоАвто/Мото

Комментарии • 126

  • @georgemorales4264
    @georgemorales4264 2 года назад +2

    62 years old !!!!! What you sound like a young man to me but it’s great to see people age so well, gives me hope that I will be turning wrenches when I’m 62.

    • @agvideo9504
      @agvideo9504  2 года назад +1

      I felt older than 62, but I'm cheap and didn't want to pay someone to do something I knew I could do myself.

  • @nhabibhabib2135
    @nhabibhabib2135 4 года назад +5

    I give you five star. For what great job you did. Especially for this edge. We love you for you're honesty and great work we love people like you

  • @gblim398
    @gblim398 3 года назад +2

    Thank you very much for the time and effort it took to produce this. It was very helpful.

  • @windowlicker2053
    @windowlicker2053 5 лет назад

    Many thanks for uploading this video. About to take on the exact same task on my 06 4.8 your presentation is more than I could have asked for and I found your video very informative. I thank you once again!

    • @agvideo9504
      @agvideo9504  4 года назад

      Thank you for your kind words.

  • @rogereastman3187
    @rogereastman3187 2 года назад +1

    That was one of the nicest, most thoughtful videos I've ever seen. Very thorough
    Thankyou...this helped me out on mine perfectly

  • @Sea2SeaAdventures
    @Sea2SeaAdventures 4 года назад +1

    Awesome walkthrough! I really needed it. I picked up a 05 Z71 Suburban 5.3 with 217k miles and I have an oil leak. I believed it was the oil pan gasket. After replacement, I still have a minor oil leak. Now I have a list of parts to get the job done. There is nothing worse than doing a job and missing something small needed to do the job correctly. Thank you!

  • @donho3617
    @donho3617 4 года назад +2

    I have done a few of these to replace the knock sensors. To make the cleaning job easier, I first use a shop vac, scraper, and wire brush to first remove the dirt. If you remove the dirt first, the oil comes off real easy with brake cleaner. If you hit the dirt with brake cleaner first, it makes the dirt into a muddy slurry and it takes so much longer.

    • @agvideo9504
      @agvideo9504  4 года назад

      Great tip, thanks for the suggestion.

  • @brendanokeefemusic-
    @brendanokeefemusic- Год назад +1

    5⭐️bud man. Great job. Thank you

  • @33ad1
    @33ad1 3 года назад

    Wow. Awesome Video. Great description and pictures.

  • @juanitogaspar8728
    @juanitogaspar8728 4 года назад +1

    Great job! Looks really good! I am actually doing the same thing to my 03 surburban lt. Lots of work and hours like you said.

  • @exbballfan
    @exbballfan 2 года назад +1

    Great Video. One of the best I have seen.

  • @sorenandersen2159
    @sorenandersen2159 Год назад

    This is the video I been hoping for! What a great job. Thankyou sir!

  • @Borderweldingservices
    @Borderweldingservices 6 лет назад +2

    Great video, I was just about as clean as what you did. Great detaul on the Valley cover!

    • @agvideo9504
      @agvideo9504  6 лет назад

      Thanks Paul, glad it was helpful.

  • @flenny
    @flenny 3 года назад

    Of course i come across this video AFTER i had my intake manifold off to replace my cam position sensor, oil pressure switch and knock sensors all in the same search for that elusive oil leak from the back of the engine. Replaced everything you spoke of except the valley pan gasket amd still have my leak. Time to do it again.

  • @Prisonmike89
    @Prisonmike89 7 месяцев назад

    damn I need to do this job on my tahoe in the spring. Guess I need to compile a list of gaskets and new parts. Looks like replacing everything all at once is the best move. Thanks for the video!

  • @vilfainga7481
    @vilfainga7481 3 года назад +1

    Great vid. I went to take the valley pan gasket n the 2 back bolts were loose😡😡 hopefully that fixes my oil leak👍👍

  • @JoseMorales-ho7lo
    @JoseMorales-ho7lo 2 года назад

    You did a great job, looks awesome

  • @ferris2323
    @ferris2323 3 года назад

    I noticed I was burning some extra oil on my 04 Sierra w the 5.3 and that it had a lot of buildup around the valve covers and under the intake plenum. After seeing where yours is dirty I think my valley pan gaskets shot too, this vid will definitely come in handy, thanks!

  • @ethan_jimenez
    @ethan_jimenez 3 года назад

    Good video. I have an oil leak in my 5.3 and this gave me a good idea of where to look at

  • @Ace-44
    @Ace-44 Год назад

    Incredible video!

  • @chriskubond6314
    @chriskubond6314 4 года назад +2

    Awesome video! All the info you need to do this job. Amazing how you got everything so clean. Great job

  • @davidjumonville9296
    @davidjumonville9296 6 лет назад +1

    Excellent video 2 thumbs up brother!

  • @lewis2553
    @lewis2553 3 года назад

    That's very encouraging! The way you describe yourself, you and I are about the same physically and agewise. You're a little younger. So I ought to be able to do this job. I only wish I was at home with my garage, instead of 1150 miles away in an apartment. It's a lot easier when you can just stop and clean up and go to bed and then resume in the morning. Here, you can't leave parts and tools lying around, or they'll walk off. Heck, the whole truck almost walked off one night. I wish it had! If I'd known I was going to have so much trouble with this truck, I would left it unlocked with the door open and the key in the ignition. A thief deserves such problems, but not me!

  • @gtopp9619
    @gtopp9619 Год назад

    Awesome video. Thanks for sharing it with us. 🇺🇸

  • @scubasteve31583
    @scubasteve31583 2 года назад

    This was great, I used a lot of this for my 03' corvette which is basically the same thing.

  • @Odenix75
    @Odenix75 5 лет назад +3

    Very well explain Sir much respect thank you

  • @jamesfarmer2748
    @jamesfarmer2748 4 года назад +3

    Man my 2000 silverado with 215,000 miles looked exactly like yours with rodent feces and gulf coast sand included. I cleaned mine just as you described with a toothbrush , B12, and paper napkins and some mystery oil when the fumes got too heavy all the while trying to keep debris out of the intake ports. I thought I had a rear main seal leak but now that I look further there seems to be oil on the back of the transmission.

  • @TheNuclearGarage
    @TheNuclearGarage 3 года назад

    Did mine yesterday. Very helpful, thanks.

    • @agvideo9504
      @agvideo9504  2 года назад

      Great, hope my video helped.

  • @longsocks82
    @longsocks82 3 года назад +1

    Great video good information !

  • @ronniehdable
    @ronniehdable Год назад

    Great video. A lot of cleaning. Looks great.

    • @agvideo9504
      @agvideo9504  Год назад

      Thank you!

    • @ronniehdable
      @ronniehdable Год назад

      I'm struggling with the same problem but I'm losing a quart of oil every 2 days. My vehicle is almost identical 2005 Tahoe. Thank you for the tips on the Xtra gaskets needed for the valley pan . God bless. Great job on the video,,, again! Lol

  • @ituneipods1
    @ituneipods1 4 года назад +1

    Great job! Need to do the same to my truck. Thanks

  • @marks7352
    @marks7352 4 года назад +2

    Great video.... You got that clean!... I agree while you have it all apart replace the stuff... I gave you a thumbs up.

    • @agvideo9504
      @agvideo9504  4 года назад

      On a vehicle that old, it makes sense to replace parts that take a lot of work to get at if you have it apart anyway. That is how I usually do things if I'm doing a big project, whether it's a car or some other project.

  • @Mikegee92
    @Mikegee92 4 года назад +1

    Awesome video

  • @markmaier1029
    @markmaier1029 2 месяца назад

    Great video!!!

  • @stevemartinez1833
    @stevemartinez1833 4 года назад

    Great video! I'm not taking anything away from that! I just wish it was a little bit more detailed in the teardown process. Not complaining much, I still learned a lot. Thank you very much. Much respect.

    • @agvideo9504
      @agvideo9504  4 года назад

      No problem, I'm just a shade tree mechanic trying to put some information out there. Many times I'd get started doing stuff that would have been good to film and have it finished before I'd even think to turn on the camera. If I decide to do any more videos, I will try and be a little more thoughtful about what others may be interested it. Thanks for the suggestion.

  • @davidshaw5727
    @davidshaw5727 18 дней назад

    Thanks , great narration .

  • @ZBrink11
    @ZBrink11 Год назад

    This video was very helpful, thank you!!

  • @larryjordan3219
    @larryjordan3219 11 месяцев назад

    excellent video

  • @1boatsailor
    @1boatsailor 6 лет назад +1

    Excellent video thanks getting ready to do mine ....big help

    • @agvideo9504
      @agvideo9504  6 лет назад

      Glad I could be of service.

    • @marcoarias6048
      @marcoarias6048 3 года назад

      AG Video What kind of knock sensors do you recommend and the harness

    • @agvideo9504
      @agvideo9504  3 года назад

      @@marcoarias6048 I bought original AC Delco sensors and harness.

  • @Gil27225
    @Gil27225 2 года назад

    Good job cleaning. I'm chasing leak in the rear of my 2002 4.8. Just got the tranny out. I'm going after: rear seal plate, valley, sending unit, & knock sensors. Already had replaced valve covers.

    • @agvideo9504
      @agvideo9504  Год назад

      Haven't checked in here for quite a while. I no longer own this old truck, my middle son is now the owner and it's still going strong the last time I checked. Made it all the way to Utah from California, then back and forth from Utah to California and then from Utah to Missouri. It's still a beater, but does what he needs it to do.

  • @harrysgarage1440
    @harrysgarage1440 2 года назад

    Great job!

  • @anthonylester3247
    @anthonylester3247 4 года назад +2

    Wish I had seen your video before I tackled my knock sensors I made so many mistakes that I could have corrected

  • @1boatsailor
    @1boatsailor 6 лет назад +1

    Just completed, I had 4 ports that were leaking. Replaced valley pan gasket, knock sensors, cam sensor, valve cover gaskets, steam vent gaskets and intake gaskets. truck runs like it was brand new, Next im going to install a oil catch can. could not believe how much oil gets returned to be reburned from the PCV valve, soot everywhere.

    • @justinvandenbroek2646
      @justinvandenbroek2646 5 лет назад +1

      1boatsailor did you have to do anything special for changing the cam shaft sensor like a relearn I think it’s called

  • @darrenschneider8962
    @darrenschneider8962 Год назад

    Nice Job!

  • @los365diasdelano
    @los365diasdelano 3 года назад +1

    Oh god, now I’m scared to do mine 🤣

  • @viramontes6
    @viramontes6 2 года назад

    Good 👍🏼 job looks nice

  • @longlivechina7538
    @longlivechina7538 Год назад

    Your my hero

  • @nunya2779
    @nunya2779 2 года назад +1

    Wow nice video

  • @ErnestoDiaz-uy1hz
    @ErnestoDiaz-uy1hz 8 месяцев назад

    Question when you removed the valley cover and you said the coolent bypass pipes did they leak when you disconnect them???? Will I need to add more coolant? I'm replacing the oil pressure sensor, camshaft position sensor, knock sensors and wire harness, Valley pan gasket. And valve cover gaskets. I already did the intake manifold gasket last year. I would love to get everything cleaned up.

  • @jeromeburrasca6710
    @jeromeburrasca6710 4 года назад

    Thank you for making this video. Excellent job! Did you use a over the motor raised platform creeper to do it? Your back must have been killing you otherwise. Is it your daily driver?

    • @agvideo9504
      @agvideo9504  4 года назад

      Nah, I wish I had one of those, I just did it the old fashioned way. Luckily I have long arms and occasionally I would stand on a box I have to help reach back further. And yes, my back took a beating, part of the reason why it took me a while to finish the job.

  • @chevyss18
    @chevyss18 3 года назад

    What did you clean the intake valves and valley cover with ?? Carb cleaner ?

  • @williamsmiley859
    @williamsmiley859 5 лет назад +3

    Awesome job. I just bought a 2001 Silverado 4.8L and I've got lean codes. Pretty sure it's the intake manifold gaskets. I'm going to replace knock sensors while I'm in there. What else do you recommend I replace while down there?

    • @osca36041
      @osca36041 5 лет назад +1

      valley gasket...oil pressure sensor

  • @mazdaman601
    @mazdaman601 6 месяцев назад

    Recently had my valley cover gasket replaced but they used the old coolant bypass lines. Worst of all they didnt put the metal spacers/gaskets back. Im pretty sure one of the ports is leaking significantly now. Could that be a possible problem for electrical issues at the back of the block? Considering thats where the engine ground is?

  • @ArmenArmenjs
    @ArmenArmenjs 5 лет назад

    Great Video, Mine is 2004 5.3 Aval and so far I don't see any issues with oil or Dexcool. How many hours it took you to complete the task. Again good show.

    • @agvideo9504
      @agvideo9504  4 года назад

      Sorry for the late reply. I honestly don't remember how long, it was a while ago. If I had to guess, I'd say since I took my time and did a lot of cleaning, it was probably a good 15 to 20 hours.

  • @eduardolemus3328
    @eduardolemus3328 6 лет назад +1

    👍👍👍👍👍👍👍👍👍👍👍👍👍

  • @mikes589
    @mikes589 4 года назад +4

    Just took my heads off how on earth did you get that soooo clean!?

    • @agvideo9504
      @agvideo9504  4 года назад

      Just a lot of scrubbing and using several different chemicals to help. I think I mentioned what I used in the video, but I haven't watched it in a while.

    • @jamesfarmer2748
      @jamesfarmer2748 4 года назад +3

      Berrymans b12 and LA Awesome cleaner from the dollar store along with a toothbrush. Put old socks or rags into each intake port to keep sand and grit out of the motor. I spent way more time cleaning the heads and valley and intake than actually doing the knock sensors.

    • @JohnSmith-xx1lx
      @JohnSmith-xx1lx 3 года назад

      @@jamesfarmer2748 why not brake cleaner

    • @MrBigbmcc
      @MrBigbmcc 2 года назад

      Yea and you have to replace the head bolts

  • @coletonwilliams8762
    @coletonwilliams8762 3 года назад

    How did you get everything so clean with the ports still open? brake cleaner okay to get in those ports?

    • @agvideo9504
      @agvideo9504  Год назад

      I used mostly Chemtool B-12, but also some Sea Foam.

  • @abohasson3705
    @abohasson3705 4 года назад +1

    REDUCED ENGINE POWER. Suburban 2003 Tokyo

  • @quickchrome2012
    @quickchrome2012 4 года назад

    Does the throttle body butterfly supposed to have some play, i mean when took it out to clean it and pushed in, it went in about 1/4 inch

  • @mattn5804
    @mattn5804 6 лет назад +3

    Did this fix the oil leak? I'm having the same thing happen

    • @agvideo9504
      @agvideo9504  6 лет назад +6

      Yes and no. Apparently I had more than one leak. Doing this job fixed the issue I had with one of them, but I discovered that I had a leak oil pan gasket also, so I did that job not long after finishing this one. Now I just get an occasional drip, not sure where it's coming from though.

    • @wesleybryant7334
      @wesleybryant7334 4 года назад +1

      AG Video rear main seal leak just had mine done

  • @rolandos64
    @rolandos64 4 года назад

    Anyone know why my valve covers are caked? Between coil packs and top of valve covers? Both. From front to back.

    • @agvideo9504
      @agvideo9504  4 года назад

      I'm guessing you mean caked with dirt? Oil leaking from somewhere, maybe cover gaskets and then dirt and dust sticking to it would be my guess. Valve cover gaskets are an easy job if you're doing the rest of what I did in this video.

  • @TheHoodedPatriot
    @TheHoodedPatriot 4 года назад

    Gonna post a update video anytime soon?just curious if u found the leak

    • @agvideo9504
      @agvideo9504  4 года назад +2

      Sorry, I don't check in here much. To answer your question, I hunted down one other leak on my oil pan and replaced the gasket. Even with that, it still had a small leak coming from somewhere. Never ran it down though, it wasn't that bad, and I ended up giving the truck to one of my sons, he needed a vehicle and I had too many. He's still using it as his daily driver.

    • @TheHoodedPatriot
      @TheHoodedPatriot 4 года назад

      @@agvideo9504 I found my leak after searching everywhere end up being the cylinder deactivation solenoid its right under the the throttle bottle intake manifold..the bolts ended up bring loose ..fixed the problem no more leaks

  • @shaunbunch6503
    @shaunbunch6503 3 года назад

    even though you won't see it you should of sanded and repainted the valley cover silver..

    • @agvideo9504
      @agvideo9504  3 года назад

      If you're doing this to your truck I would recommend you taking your own advice. Unfortunately, I no longer have this vehicle. It was just a beater, not a show piece. I was more interested in it being functional and repaired than being pretty.

  • @extorter
    @extorter 2 года назад

    hey did any of the leaks come back after doing all these repairs?

    • @extorter
      @extorter 2 года назад

      also, what were the names of all the gaskets you had to buy? just so i dont miss any

    • @agvideo9504
      @agvideo9504  2 года назад +1

      Wish I could help more with your questions. About a year after doing the repairs, I had no leaks. Then I gave the truck to one of my sons. He still has it, but hasn't mentioned any leaks, so maybe it's still good. Regarding the gaskets, I'll see if I have any records on them, but I just moved and are most likely gone. If I find them I'll reply here when I do.

  • @realtruth97
    @realtruth97 3 года назад

    How did it run after the clean up job?

    • @agvideo9504
      @agvideo9504  3 года назад

      Surprisingly just a bit better than it was before. Most of the leaks were fixed though. I still had a very small leak that I suspect was coming from the crank position sensor. I didn't mess with it though. I gave the truck to my son not too long after finishing this job.

  • @tony5826
    @tony5826 2 года назад

    Maybe u get this and hopefully can respond those intake gaskets do they work i ordered some and I was thinking that the steal shouldn't go between the heads and intake but how's it going 5 yrs later

    • @agvideo9504
      @agvideo9504  2 года назад

      Don't own it any longer. Gave it to my son several years ago. Was running well when I gave it to him and he hasn't said anything about leaks or it running poorly.

    • @tony5826
      @tony5826 2 года назад

      @@agvideo9504 thank you for replying that is great I got them on it.

  • @23thebull
    @23thebull 2 года назад

    The best way to work on a truck this size is to take off the front wheels, you'll have better leverage...just my two cents 😉

  • @Grizzly0669
    @Grizzly0669 2 года назад

    What did you use to clean all that?

    • @agvideo9504
      @agvideo9504  2 года назад

      To be honest, I don't exactly remember. However, I think I mentioned what I used in the video.

  • @jeaubeau
    @jeaubeau 4 года назад

    Great how-to.. thank you for the effort of making your video. You need to try CBD oils for your arthritis topically and internally it helps my arthritis. Another good oil my sister-in-law introduced me to is Copaiba.. keep up the good work sir

    • @agvideo9504
      @agvideo9504  4 года назад

      I've read about CBD oil, just haven't had the funds to buy any. Thanks for the tip. Update about the CBD oil. I tried some finally, did absolutely nothing for me, other than set off a bad case of hives. I know that some people swear by that stuff, but it no worky for me.

  • @JoseMorales-ho7lo
    @JoseMorales-ho7lo 2 года назад

    Holly moly that is bery nasty

  • @jamesglover8142
    @jamesglover8142 5 лет назад

    Where did you get the torque specs for the valley pan that I cannot seem to find them anywhere ?

    • @xavierguy10
      @xavierguy10 5 лет назад +2

      Valley pan bolts are 18 ft/lbs and knock sensors are 15 ft/lbs

    • @jamesglover8142
      @jamesglover8142 5 лет назад +2

      Thank you very much man everything's installed the truck runs great

  • @edwardvasquez218
    @edwardvasquez218 3 года назад

    U ALREADY A NEWS GUY U JUST DON'T KNOW IT. I HAVE SAME OIL LEAK ON 6.O. DID U FIX UR OIL LEAK PROBLEM ? GIVE ME A HOLLER.