1995 Chevy Truck V8 350 Cooling system Radiator flush

[@KevinLSX619]

How strange lmao. I recognized the room you were in and had to make sure. Used to watch you years ago mod consoles and learned a lot about soldering from you and here I am today learning how to coolant flush from you.

[@Mfury001]

Use a rad flush additive, they are cheap and it breaks down the scaling in the radiator and engine block that builds up over time. Just running straight water does little except flush out loose scaling and not the stuff stuck to the metals inside. If using straight water don't leave it in for long since it will cause corrosion inside the radiator since there are no corrosion deterrent additives in straight water. Use distilled water and antifreeze concentrate when refilling. Also best to not drain antifreeze into the lawn or drain.

[@k2_tech745]

Outstanding video! Very well narrated and I appreciate the fact that the camera is still as opposed to someone swinging it around inducing vertigo on the viewers.

[@Mikeywil0003]

Every fall, I backflush the heater core on both of my trucks. I unhook the heater lines from the engine side, blow the coolant out (in the reverse direction) with an air line. Fill with radiator flush, let it sit for a couple hours, blow it out again, then I do the same thing with boiling hot water 3 or 4 times. I always get so much crap out of it, brown goo and coffee grinds, even though the coolant in the radiator looks brand new. Before I started doing this, I wouldn't get good heat until it was running at operating temp for at least 5 minutes, but now, it gets warm as soon as the temp needle comes off the stop, and gets hot soon after.

[@josephfreeman1427]

I'm going to do this soon. I have dexcool and it's pretty nasty. I'm going to flush the block and heater core. Going to green coolant after

[@wazowskij8157]

Got any pictures of this? I’d like to do this with my 350 tbi. Not sure I fully understand where your blowing compressed air into the cooling system.

[@carsonevans4252]

@@wazowskij8157 He means blowing air into the heater core. The lines from the core come out of the cab into the engine bay on the passenger side. Take the rubber hoses off of those hard lines and you can blow/flush it from there.

[@dalesworld1308]

Interesting procedure. Only thing I'd add is a length of pvc pipe or gutter to your hose so that hot water isn't running down onto the horn or lights.

[@condeerogers5858]

Flush with water only unless it is crusty. Everytime I flushed my system with Dupont Radiator Flush, my water pump started leaking. Before it was OK. After the flush it leaked. This happened three times over the years. I never flush with a chemical anymore. If you keep your system clean and full of fresh anti freeze you never have to flush in the first place. If your truck isn't getting hot just flush w/ water if you want to clean it. If it ain't broke don't fix it.

[@daveschidlmeier6425]

I agree... i flushed my Blazer with the chemical Cleaner and about a week later the water pump was leaking at the little hole by the shaft, because the cleaner cleaned all the grawdo from the water pump bearing. Flushed it again throughly with just water a few years later... no problem. I also back flushed the heater core with the garden hose water only... Heater worked well after that.... no chemicals !!!

[@atgn-0088]

Great video! I inherited my mom's old '93 S10 and wasn't fully sure how to flush the radiator. Even though the S10 is a 4.3L V-6, there are a lot of similarities to the 350 V-8 engine.

[@johnnymoreno4420]

I did this to my 94' Chevrolet c1500 and it worked like a charm. Much appreciated Jason. Thanks.

[@kawiman09]

Johnny Moreno hey bro I have the same truck my heat isn’t working so I’m trying to flush my truck sat up for 6yrs

[@johnward5890]

Good that you clean the system but distilled water is the only water that should be used. The minerals in tap water contaminate the cooling system and can created scale on the inside of the water jacket. The last flush should be distilled water and flush chemicals then use a 50/50 or 70/30 mix 70 coolant 30 distilled water if you live in a really cold climate like me. Pure coolant will still freeze the distilled water helps with the heat containment and transfer of heat better and is why some truck heating systems work better than others, it the differance in mix percentages of coolant and distilled water. 60/40 works well for where i live in the north in a 1992 suburban with a 350 CID 5.7L witha 4 core radiator. Some of the newer GMC, Chev trucks have a problem with the Intake gaskets leaking coolant into the oil pan due to corrosion of the gaskets by the pink coolants that GMC started using and they need to be changed and the Green coolant needs to be used which doesn't corrode the gaskets some gasket for this reason have been upgraded to a steel and rubber type. If you have a newer GM car or truck and your rad coolant looks really brown or dirty do a oil change and see if the oil has any coolant in it. this will be a early warning sign that your engine will need a intake gasket. Your dirty water looks like a motor oil that is being pushed in the the water jacket by the compression of the piston pressures like blow bi.

[@lucaslewis517]

Thanks man! Just got a 96 chevy c1500 58k miles! the only thing wrong is the nasty cooling system

[@vanillarain3789]

I swear it don’t matter what year every obs I’ve owned has had dirty coolant. Never has affected running for me I’ve had bout 5 of em

[@zulumagoo1]

Im guessing this thermostat stuck open since the first time it opened due to copper radiator sealant (barrs) will suffice as a gutted thermo? Also... For quicker more thorough flush and easier catchment in a larger underbed storage containter... Im going to use lower hose outlet to flush. Brand new radiator and hoses. Not flushed properly during rad. R/R. DIM wit. Did it myself wit no help.

[@MrFrshncln1987]

Doing it this way, does it also flush out the heater core?

[@NiteRythemzRadio]

I love my Chevy and GMC trucks

[@jaydegelder2964]

NiteRythemzRadio1, Me too !!!!

[@shilohssongsmissildine2208]

I'm fixen to do the something with my chevy 2500 this was a great video to watch and will do my own video trying this ty for sharing.

[@MickCaleb]

Is it bad to do this if my water pump is good? I don't want to put all this rust and crap through a good water pump do I? Or is it ok?

[@ayyeitsbenny5695]

He made this extremely simple and easy to follow

[@laughingmute608]

New to doing my own maintenance. Are you putting the thermostat back in between the flushes or Leaving it out until you have cleaned everything out on Final flush.

[@jimmystepp7204]

Watched this vid for my 94 sport blazer. Thanks a bunch for the info

[@leesire]

Where do you fasten the water host to? Radiator inlet

[@MickCaleb]

So when did you replace the thermostat? At the very end before coolant fill?

[@campuzano95]

First thing I questioned on this video, and was wondering why not asked yet as I scroll the comments 😂

[@0ptimal]

Yes. When all the flushing is done n ur ready to roll w new coolant

[@mfsmfs63]

Ethylene Glycol all over the driveway. Awesome. Be sure your dog takes a big drink of it while you're at it.

[@WhiteGravey]

have you ever tasted it? theirs no way in hell a dog would drink enough to get sick

[@mfsmfs63]

@@WhiteGravey Now that the manufacturers have recognized the problem, they've added a chemical to give it a bad taste. Still pretty awesome stuff to throw down the storm drain though.

[@TrippyWoodStock]

Easy and straight forward thank you!

[@CarlosRamirez-xg1qj]

Just to be sure, you take off the upper radiator hose, then put the garden hose into the upper radiator slot, right?

[@katiemurphy6631]

Right

[@josejuanrosales3614]

You can also do it on the lower hose that goes in the water pump.

[@vargas333]

Man I’m about to do this to my 89 suburban cause I’m about to change the water pump. Great video 👍🏻👍🏻👍🏻

[@MiamiWebDesign]

Great video. I'm going to do the same, thanks

[@nick120899]

How much did it cost to install the push button start?

[@larspeterson1679]

It is factory

[@nikon1500nemetsmechanik]

Здравствуйте,смотрю ваш канал.У меня во владении GMC ENVOY SLT 2006-07.хотелось бы больше видео про обслуживание и ремонт данного автомобиля.В наших краях машина редкая,но мне очень нравится.Еще хотелось бы попросить сделать субтитры на русском языке.

[@anthonytravis1420]

I could only get about 4-5qts back in but the book says the capacity is 18qts. What gives?

[@30sixb0y]

To the whole entire time do you leave the thermostat open?

[@grimdark2740]

Rig's Mon no you close it back up. You can see him putting the bolts back on in the video

[@curtisbrowning4682]

wanted to do my 97 and glad I watched this. Good video

[@jaydegelder2964]

Instead of gutting your thermostat , why not just leave it out ?? ( I'm curious ).

[@angelfacecosmetics3656]

same! im having trouble understanding what he did from 0:53 to 1:10. what does gutting the thermostat mean??

[@jaydegelder2964]

@@angelfacecosmetics3656 , Gutting the thermostat is taking most of the insides out so it doesn't work the way it's intended. I believe he should have just left it out and he would have gotten the same results. But I can see why the reason to use the thermostat is because if he left it out he would have to use a gasket for the housing. He saved one gasket by doing this his way.

[@LisaMedeiros-tr2lz]

Why bother gutting it? Just leave it out and reuse the old gasket. Who cares if it leaks a small amount. When I did mine and reused the old gasket, it did not look in good shape, but didn't leak anyway. Just before putting in coolant, I put in the thermostat and new gasket.

[@mattwoody1089]

Do yous use water in the winter

[@zacs509]

Yay let's just dump poison and chemicals everywhere!

[@ryanmatteson8390]

zac s exactly what I was thinking.

[@bren42069]

Well i mean it's pretty much just rust water right?

[@hunterjacobson855]

DaRealAsclepius no sir, engine coolant has ethylene glycol, it’s antifreeze, and poisonous to animals, plants, and people. Even small amounts can kill things. This is a terrible demonstration, please avoid doing anything remotely similar to this. This is very detrimental to the surrounding environment. 👎🏼

[@Stray-sy2uh]

DaRealAsclepius no stupid, it dangerous. It smells good to animals and is poisonous. It coolent.

[@jon8336]

Murica

[@katiemurphy6631]

Hello, I did the same thing you did, but for some reason when i put the hose in the radiator it just shoots backwards. It wont go through the system and out the top radiator hose. Is there something I'm missing? I didnt see you take off the radiator plug?

[@dallastx1993]

Katie, did you add a rag or anything to create a “seal”. If you look at the video again, he has a tag wrapped around the garden hose

[@kevinmiller4486]

Radiator could have a lot of corrosion and it wont pass liquid easily.

[@samueltorres7555]

I have a question sir, So you mention the pump being replaced. Was this before or after this process I ask because i thought the engine sucked coolant into the engine from the thermostat part. This video makes me think the pump is actually sucking the coolant out of the radiator and into the engine from the lower radiator hose. I guess im confused, does the water pump only come on when the thermostat opens? Doesnt seem like they would talk to eachother... is it when it notices loss of preassure by the thermostat opening that jt kicks on and pushes it in to the block? Hope my questions make sense. Thanks in advance.

[@brandon263]

Because the thermostat controls how much coolant goes thru and with it cold…. It will be closed so in order to flush the heater core at the same time u need the thermostat wide open just for the flush

[@chuckd7423]

This question is 10 months old, but since I didn't see an answer to your query, I though I'd give it a shot. The water pump on these trucks is mechanical and runs off the serpentine belt anytime the engine is running, regardless of whether the thermostat is open or closed. The pump is an integral part of the serpentine belt arrangement, and has to be in place in order to route the belt over other components that are also part of the serpentine belt arrangement, including such things as the alternator, power steering pump, and A/C compressor, as well as idler pulleys to allow tension and adjustment of the belt. The purpose of the thermostat is to stay closed and prevent coolant in the engine from circulating through the radiator until the coolant reaches a certain temperature, typically 180 degrees. This allows the heater to warm up faster than if the coolant was circulating through the radiator. There is also less wear and tear on an engine when it comes up to operating temperature, so it's in the interest of engine longevity to allow the coolant to warm up as fast as possible. When the thermostat opens, it allows heated coolant from the engine block to pass through the upper radiator hose, to the upper radiator inlet, and through the radiator for cooling, and is then sucked out through the lower radiator hose by the water pump, where the coolant is then circulated throughout the engine, and then constantly repeats the engine/radiator circulation cycle.

[@samueltorres7555]

Got a "killer glass" radiator hose custom made and i saw the answer to my question 9 months ago. Its pretty cool to see the liquid flow.

[@DavidAvila-zb6yp]

Is it a good idea to remove the termosthate out of the truck? I own a Chevy C1500 2DR 1995 and for any weird reasson the last owner removed the termosthate

[@0ptimal]

I wouldn't run it too long w out a functional thermostat it's there for a reason

[@FractalNinja]

Thermostat opens to flow to radiator after it hits a certain temp, if you remove it it'll flow to the radiator without needing to get the temp up too much, just making flushing and swapping out fluids easier and quicker since you dont have to wait for it to hit molten temps to start flowing 👍 if its left out your engine takes longer to get up to operating temp which can lead to poor fuel efficiency

[@jerzonrayo1259]

what color coolant do you use afterwards? green or orange?

[@angelfacecosmetics3656]

orange

[@nd20111]

Jason, have the same truck, how did you program yours to remote start ?

[@attackhelicopter2473]

nd20111 I too have the same truck. At 165xxx miles about as in the video too. How did u install that remote start jason? Thanks for the videos. Your rear drum brake cylinder replacement was a life saver!

[@tacospeedsters2086]

It’s auto start you can buy it at Best Buy and they will install it for you as well all for like $300

[@Smegma_pirate]

TacoSpeedsters they’ll also re arrange your trucks electrical system with shotty connections and reckless teenage angst

[@travonconey]

So if water is coming out of my radiator house. What does that mean?

[@obschevy2965]

Is the method the same with a 97 ?

[@turbofiat]

Your 350 Vortex is laid out different than my 97 Express van. I need to flush not only the engine and rad but the rear heater. Do you know it the heater hose behind the alternator is where I need to put a flush tee? I can't tell if this is the hose coming off the water pump. Everything is so buried and hard to see in this van. I was also going to force air (like 5 lbs) through this tee since I have no idea how to drain the rear heater. The Haynes manual says this van takes 20 quarts of coolant! Once I Purge the system I can add 10 quarts of antifreeze then 10 quarts of water through one of those Lyle funnels with the engine running.

[@calincampbell5637]

Just so you know, this is not a vortec (ls based truck engine). It is a tbi 350 (based on gen 1 smallblock)

[@zulumagoo1]

Secret. First things to take out to get access, are air intake box and water overflow reservoir. You'll get used to it. It's just one of those things you have to roll with in van maint. I changed my alternator in a parking lot with a number ten number 13 and a flathead for tools. Oh... And channel locks because previous owner kinda rounded battery terminal bolthead on ground.

[@crowncontrol3637]

So if i have an 88 silverado and about to do this should i get a new thermostat as well? It seems to be fine but would it hurt or is that a dumb idea if its not necessarily broken?

[@obsmark8714]

Any sort of preventative maintenance is good

[@carrillominjares342]

Ooh man thank you for this video

[@Devo1987]

Hey Do you have a security light with that remote start ?

[@fallenone6]

Why did u gut the thermostat? Is that necessary or can i flush with it in?

[@theodorebridgman1401]

The thermostat only opens at operating temperature. If you don't do this the system won't stay wide open during flushing below 160f (or whatever the particular therm is set at). They're $8 at any autoparts store -- you'll have a better time if you gut one, or if your seal isn't integral to the thermostat housing, just remove it

[@theodorebridgman1401]

@@fallenone6 ....so I'm glad you're asking this, but tbh I'm not sure if you're trolling me or not. Yeah removing will be OK as long as your gooseneck still seals properly to your block. Distilled water just reduces potential corrosion which is a moot point when it's just flushing out gunk-filled old water anyhow. On a new vehicle with a clean engine there's a case for distilled, but at the vehicle age where water looks as it does in the video it's a different case. Highly recommend you read the Haynes/Chilton manual for your specific car before you move on. It seems like you're lacking some basic concepts (not a bad place to start but it's where you are) and that can be dangerous

[@ypcomchic]

Brand is blue devil based on bottle in video for radiator flush.

[@ryfalraptor10]

It keep getting cloudy and brown after leaving the tap water in because that tap water is eating away at the block, heads, heater core and radiator due to all the chemicals in tap water

[@ryanmcgowan3061]

Exactly. Iron rusts in seconds. I'd never let water sit in an engine block for more than a minute or two.

[@georgecostanza9387]

Not true at all I’ve flushed engines multiple times with a garden hose and left the water in there for days at a time then drain and refill the water will come back out clean when the inside is clean

[@epluribusunum6622]

I think it depends if there is clorene in the water

[@zulumagoo1]

I flush with city water then fill with distilled for final fill. I know its difficult to get it all flushed. Especially in van. This coolant system is a nightmare. 1997 5.7litre.

[@ginosalinas3237]

Yo man , did you ever fix your ac on that truck?

[@davidtrauntvein1648]

You really dumped coolant all over your driveway?

[@joeydeats3099]

womp womp

[@woo1818]

Oh well, I just poisoned the drinking water womp womp

[@kaleb54354]

Oh no who cares womp womp

[@saulalasaafi3150]

Thank you so much!!💯💯

[@billypilgrim7838]

they put a drain at the bottom for a reason

[@RedfishCarolina]

You can't access the drain on these many of these, especially Vortec 5.7 trucks. I've owned several, 2wd and 4wd. You cannot access the rad petcock.

[@deaddad6310]

@@RedfishCarolina you can reach it from the top? Its actually pretty easy lol. You just gotta be okay with touching the hot radiator with your whole arm lol

[@brandon263]

@@deaddad6310 no not on mine u can’t

[@deaddad6310]

@@brandon263 yeah you can. All 1500, 2500 trucks are identical in the engine bay. Every 5L or 5.7L is set up the same. I've owned 2 Silverados a Tahoe, and a suburban. The two Silverados were a 92 and 96, my tahoe is a 98, and my burb is a 93. One Silverado has the 5.0 and the rest have the 5.7. You can reach it, it's there. Unless it's an aftermarket radiator

[@brandon263]

@@deaddad6310 ur right it is there, I’m sayin I am not capable of removing it is all, maybe if I took apart more under the hood, but I’m lookin at it rn and it has a strange looking plastic screw that’s got like turns on it I can not get it loose to save my life- it looks like a swirl with a slit and ends on each half swirl for tightening I’m assuming? Is that what urs looks like? Mine is white

[@JoseRodriguez-vm5xm]

Great video thanks

[@darrylbarba5330]

Thank you so much man this helped a lot!

[@waltercardenas7354]

Where can I get a remote like yours? Thanks

[@robertreynolds4248]

Thanks

[@billharris3049]

Why did Jason stop posting videos?

[@michaelhauser603]

Does anyone know if the driving process of flushing is still with the gutted thermostat?

[@ChauncyFatsack]

Yes a lot of people take them out and gut them as a cheap fix if they go bad and vehicle over heats a lot too!

[@brysondiggs7607]

@@ChauncyFatsack how you gut it? Need serious help

[@jaydegelder2964]

Michael Hauser, only use the gutted one during your flushing procedure after your done all the flushing, yes you should put in a new thermostat. ( subject to summer or winter temp.)

[@vancepass7403]

Badass

[@ypcomchic]

That’s oil coming out the second time you flushed it. Cracked engine?

[@thatbluehoe7868]

This doesnt crack the block?

[@jakefriesenjake]

You only crack the block if you ran the engine really hot, and then as quick as you can, turn a cold garden hose on, into the engine. Even then, you probably wouldn't crack the block. Just don't do it. Do this process "starting" with a cold engine.

[@terencegillespie6675]

That sucks. Where do you attach the garden hose to the radiator? You skipped that part.

[@TRICITYTRASHOUTS]

He States connect to radiator, duh

[@zulumagoo1]

He puts gardenhose in top hose inlet on radiator. Where flushing ouput was before it became output. Filling gaps with a rag.

[@katiemurphy6631]

Right

[@steveobrien1645]

Does anyone think about the environmental impact of just dumping the antifreeze on the driveway. The neighbor's pets or his own won't think twice about licking it up and causing them to be poisoned and die. Not very thoughtful or responsible.....

[@thingsdemystified]

Ethylene glycol decomposes rapidly in the environment, so just don’t leave pools where animals can drink it, and you’re fine.

[@TRICITYTRASHOUTS]

Pussy

[@ya8aweenaystrday]

@@TRICITYTRASHOUTS He's a pussy because he gives a shit about someone other than himself?

[@rustcoal]

Why are the neighbors pets on his driveway? If the neighbor doesn't care to leash up their pets, why should this guy flushing his coolant care?

[@ypcomchic]

Why not just leave thermostat off??

[@jakefriesenjake]

You can, but in the winter time, you won't get any heat. Get bad fuel mileage. In my summer driven 81 Camaro, I have no T-stat. It takes a little longer to heat to operating temp tho. Once my engine gets to the temp I like, my adjustable Rad fan kicks on. I also have a manual electric fan override on/off switch, with led light that tells me if the fan is on or off. There is alot of debate about the T-stat, but I think its only for the winter time, and fuel mileage. Engines are most efficient at like 195°f I don't even have a heater core.

[@iMusicProfile]

Is it really necessary to be wasting that much water? What would really be the difference for the longevity of the radiator? Not much difference

[@aj_412]

There’s your problem you’re using tap water instead of distilled water

[@naughtyvalues]

Doesn’t make a difference

[@bwagenberg]

You're dumping glycol on the ground. Hope your pets aren't around.

[@Charlestonwhitesburner]

Kiss ass tree hugger

[@sergiomslacara2214]

y los pedazos del termostato, salieron, o se quedaron adentro???😳🤣🤣

[@philliparthur8672]

He took it apart when he removed it from the truck

[@stevenconrad9158]

Great video! But did you still need to replace water pump?