These are the most common Chevy Vortec V8 Engine Vacuum leak spots. Intake Gaskets: amzn.to/2XLjTz6 Knock Sensors: amzn.to/49NCE8a Knock Sensor Harness: amzn.to/3oMVzJ2 Updated Valve Covers: amzn.to/3UYbeIB Air Intake: amzn.to/3IkSzir As an Amazon Associate I earn from qualifying purchases.
"It can leak" really makes me follow all of my vacuum lines etc :) The other inspection i do are all the grounding locations. The ground cable between the engine and the body was turning green and got replaced with a marine / sealed lugs cable.
@@MattsShop do you do how to videos on some of the stuff that's a little difficult and there might be tricks to? I'm sure you got some tricks up your sleeve for repairs... Let's see em. Lol
My 2000 Suburban development a knock out of nowhere one day. I’m thinking my intake manifold gaskets were bad and water got into the engine causing a hydrolock on one of the cylinders bending a connection rod. Sucks. Ending up getting a used engine put into it
I have an 02 silverado v6 4.3L that random misfires under heavy load. Usually, going up a hill. The code clears as soon i get on level ground. Im pretty sure it is a vacuum that occurs under heavy load. Any idea what it can be? Im thinking of those intake seals you kept mentioning
what’s up man i got a transmission problem, when i drive my truck for a while it won’t shift from 2nd to third unless i let go a little of the gas pedal. Any ideas what it would be? Transmission was just rebuilt also and filter and oil have been recently changed.
Might sound silly bc i know you gave all the information in the description, but i have a 2003 chevy Z71, engines a V8 5.3 Z... is that one of the cars you're showing here? I have a intake valve that gets stuck open and need to figure out how to get in there and fix it 😅
I got that too, I’ve just left it on. Asked a mechanic and he said the bulb for the engine light might just be wearing out or dead. It’s not big issues u just can’t see ur engine light pop up if something was wrong, but if u have a scanner it’ll still scan and show u
I have a 01 gmc Yukon Denali xl 6.0L I have a p0300 multiple misfires code I changed the spark plugs ( dealership) spark plug wires ( dealership) the coil packs ( dealership) & still have a misfire & my check engine light is still on
Is the evap solenoid supost to wiggle a lot? That 10mm bolt is tight but the thing moves like crazy. My truck is a 01 2500hd 6.0 and I have a miss at idle in I think cylender 3. No codes but it threw one at 5000 rpm and it went away.
You'll get p0171 - Bank 1 Too Lean and p0174 - Bank 2 Too Lean. Look at scan data, and long-term fuel trim will be very high, +20 or more. And if you rev it up to 2000 RPM and trims will drop down to near zero. Let off, and they go back up. That is tail tail intake leak sign.
Here’s a really simple way wait to the car has warmed up and then rev the gas if it shoots water it needs intake gasket replacement. You’re welcome. Only aluminum engines are supposed to leak on start up. That’s why you have to wait till it warms up and if you were a white guy he should be no problem every time I turn around I just see white guys revving their cars. Every RUclips video no matter how cool the car is he’s revving the fucking engine.😂😂😂🤣🤣🤣🤣😭
@@M4sterT3ch let's say i had all those signs is their any alternative things I should check before I decide to replace those gaskets like word for word every thing you said is what happened when I test it
@JB-qr5io Yeah, the intake manifold gaskets and any vacuum lines going to the intake. It is not as common of an issue, but fuel injector o-rings can leak as well. Pull the fuel pressure regulator line off to make sure then regulator diaphragm isn't ruptured. This issue would cause a different type of symptom, though.
Hey man im having issue with my 01 Silverado 5.3 not starting the truck starts on first try and it runs perfectly but when you turn it off and try the 2nd to start it just cranks no start only starts when you leave the truck alone sitting for hours I check fuel I check everything idk where else to look need some info where i can find the problem thanks
@@Daboy115maybe it’s not getting enough spark could be a faulty ignition coil/ distributor depending on your year or maybe it’s not getting enough fuel, could be fuel injectors or fuel pump. Check your battery connections as well. Make sure they are tight and not loose.I had a similar problem and it turned out to be a bad battery and not a very good connection if I recall.
I have an 02 s10 and I’m hearing a bad hissing sound I’m noticing it for a bit after I shut it off but I’m sure it’s probably also happening while running. It’s probably one of these leaking huh ?
These are the most common Chevy Vortec V8 Engine Vacuum leak spots.
Intake Gaskets: amzn.to/2XLjTz6
Knock Sensors: amzn.to/49NCE8a
Knock Sensor Harness: amzn.to/3oMVzJ2
Updated Valve Covers: amzn.to/3UYbeIB
Air Intake: amzn.to/3IkSzir
As an Amazon Associate I earn from qualifying purchases.
Us GMT800 owners appreciate you more than you know, Matt!
And you can fix em all for less than a new truck payment 😂
Yes sir!
"It can leak" really makes me follow all of my vacuum lines etc :) The other inspection i do are all the grounding locations. The ground cable between the engine and the body was turning green and got replaced with a marine / sealed lugs cable.
I love tracing all those ground wires those are fun.
Of course there is problems but the gmt800 is hands down the best truck gm has ever produced
Yes! I agree!
Great stuff, I’ve been searching high and low on the issue my 5.3 has been having. This will help me a ton
Good stuff man. I got a 02 6.0. Found a vac leak at the o rings under the purge solenoid and egr tube where it connects to the intake manifold.
Love your videos man! I just bought my boy a 05 silverado. This stuff is gold!
Your doing the Lord's work brotha.
I appreciate ya
Thanks man. I appreciate it!!
@@MattsShop do you do how to videos on some of the stuff that's a little difficult and there might be tricks to? I'm sure you got some tricks up your sleeve for repairs... Let's see em. Lol
Fuel injectors can leak too if the lower o ring fails
Great series. Keep 'em coming.
Thanks man! I will.
Great video very clear explanations detailed on every last little bit of it very awesome video definitely going to subscribe and look for more
That's what I was going for! Thanks for the sub.
Awsome video!!!! Straight to the point with a lot of information!!
Thank you! You're welcome!
Great Stuff man, thank you for the video and the information.
You're welcome!
Good video. At least it's a Chevy
You got that right!
How easy is it to replace in the intake gaskets yourself? How much would a mechanic charge just curious
Looks like Toyota FIPG gasket maker sealing those knock sensors
My 2000 Suburban development a knock out of nowhere one day. I’m thinking my intake manifold gaskets were bad and water got into the engine causing a hydrolock on one of the cylinders bending a connection rod. Sucks. Ending up getting a used engine put into it
I have an 02 silverado v6 4.3L that random misfires under heavy load. Usually, going up a hill. The code clears as soon i get on level ground. Im pretty sure it is a vacuum that occurs under heavy load. Any idea what it can be? Im thinking of those intake seals you kept mentioning
how about a PART 2: finding the leak - with a smoke machine or a bottle of water (like scanner danner?)
Got a 2012 Chevrolet Silverado with P219 code. Vacuum leak?
Would this cause the truck to try to accelerate on its own as you begin to drive?
Depends on the year. Probably the throttlebody if it's a 2003 or newer truck with the electric throttlebody.
what’s up man i got a transmission problem, when i drive my truck for a while it won’t shift from 2nd to third unless i let go a little of the gas pedal. Any ideas what it would be? Transmission was just rebuilt also and filter and oil have been recently changed.
Might sound silly bc i know you gave all the information in the description, but i have a 2003 chevy Z71, engines a V8 5.3 Z... is that one of the cars you're showing here? I have a intake valve that gets stuck open and need to figure out how to get in there and fix it 😅
Nvm i made it to the end of the video, you stated the car and engine 😂
I have a P0650 and still haven't found the cause. Can you do a video on moat common causes please.
I got that too, I’ve just left it on. Asked a mechanic and he said the bulb for the engine light might just be wearing out or dead. It’s not big issues u just can’t see ur engine light pop up if something was wrong, but if u have a scanner it’ll still scan and show u
Excellent
Hey does anyone know why my 2002 Chevy Silverado tail lights and dash lights don’t work but the turning signal and break light do work
It could be a bad ground somewhere or a combination of problems. The brake light junction box can cause you a lot of problems too.
Can the air filter box cause a vacuum leak mine leaking at the lid some people so no some say yes
if air bypasses the MAF sensor -yes
Hey man, i want to replace my intake manifold gasket, can I re use the bolts?
Yes you can.
I have a 01 gmc Yukon Denali xl 6.0L I have a p0300 multiple misfires code I changed the spark plugs ( dealership) spark plug wires ( dealership) the coil packs ( dealership) & still have a misfire & my check engine light is still on
Can try a crank relearn with a scan tool if you don't actually feel the misfire. Engine running lean or rich?
Had this happen on my 2002 suburban ended up being the intake manifold gaskets
Is the evap solenoid supost to wiggle a lot? That 10mm bolt is tight but the thing moves like crazy. My truck is a 01 2500hd 6.0 and I have a miss at idle in I think cylender 3. No codes but it threw one at 5000 rpm and it went away.
Yes it wiggles a lot it seals with a rubber seal that goes around the mounting bolt.
@MattsShop ok thanks for your answer. I could not find anything online about it so I wasn't sure.
I stayed away from displacement on demand and bought a 2004 Tahoe
What are the symptoms of leaking intake manifold gasket ?
Poor idle, misfires, bad power, alot of different codes, bad mpg, main one is a loud hissing noise
You'll get p0171 - Bank 1 Too Lean and p0174 - Bank 2 Too Lean. Look at scan data, and long-term fuel trim will be very high, +20 or more. And if you rev it up to 2000 RPM and trims will drop down to near zero. Let off, and they go back up. That is tail tail intake leak sign.
Here’s a really simple way wait to the car has warmed up and then rev the gas if it shoots water it needs intake gasket replacement. You’re welcome. Only aluminum engines are supposed to leak on start up. That’s why you have to wait till it warms up and if you were a white guy he should be no problem every time I turn around I just see white guys revving their cars. Every RUclips video no matter how cool the car is he’s revving the fucking engine.😂😂😂🤣🤣🤣🤣😭
@@M4sterT3ch let's say i had all those signs is their any alternative things I should check before I decide to replace those gaskets like word for word every thing you said is what happened when I test it
@JB-qr5io Yeah, the intake manifold gaskets and any vacuum lines going to the intake. It is not as common of an issue, but fuel injector o-rings can leak as well. Pull the fuel pressure regulator line off to make sure then regulator diaphragm isn't ruptured. This issue would cause a different type of symptom, though.
My Hummer H2 is running like a champ!!!!!!
Use smoke to find all the leaks
It can leak she said
I know right.
Hey man im having issue with my 01 Silverado 5.3 not starting the truck starts on first try and it runs perfectly but when you turn it off and try the 2nd to start it just cranks no start only starts when you leave the truck alone sitting for hours I check fuel I check everything idk where else to look need some info where i can find the problem thanks
Starter? I just did mine 2000 suburban
@@christianfloresjr5097 no sir start is cranking the engine problem is it’s not firing up
I'd check your air and see what you're fuel pressure is doing.
@@Daboy115maybe it’s not getting enough spark could be a faulty ignition coil/ distributor depending on your year or maybe it’s not getting enough fuel, could be fuel injectors or fuel pump. Check your battery connections as well. Make sure they are tight and not loose.I had a similar problem and it turned out to be a bad battery and not a very good connection if I recall.
Check your fuel pump relay, or 20 yellow fuse.
That long hair dont cover that red neck boy
Haha it does sometimes!
Poverty force me to decode this issue sir i show you
I know right.
I got a 2011 5.3 and a p0442 small leak code. Already replaced gas cap purge valve, canister and solenoid. Any ideas other than Smoke test????? Thanks
charcoal canister
nvm didn’t notice you said you already did that
have this problem have u fixed it yet?
All cars do that
It’s a Chevy and it can leak,
It will leak
It can leak!
This sucks
No, literally! 😛
I see what you did there.🤣
Junk it☹️☹️☹️😭😭
No way!
I have an 02 s10 and I’m hearing a bad hissing sound I’m noticing it for a bit after I shut it off but I’m sure it’s probably also happening while running. It’s probably one of these leaking huh ?