When This Happens, Your Car is Screwed

When This Happens, Your Car is Screwed

rev up your engines this overheating Nissan the engine is overheating customer brought it over here after taking it to other
mechanics you never know what anybody’s actually done they told her
this that and everything else but you got to start out with the basics now number one this is a brand new radiator she told me they paid to put a radiator on
this but it didn’t solve the problem and right away I can see the
cooling fins and there’s no coolant in them I told her I’ll probably use the
thermostat now well it’s low on coolant a thermostat opens and closes but generally isn’t going to make it low on coolant so I really kind of
wonder about that I notice the check engine light is on so I’m gonna test that
first plug in a scan tool turn the key on and see what it says it’s reading
codes got a whole bunch of codes let’s see
what it says the engines running too hot knock sensor driver airbag module now
knock sensors on these v6 Nissan’s go bad all the time at the royal pain to
change you got to take off the intake manifold and that general isn’t gonna
make an engine overheat the only code they’d ever do with the engine
overheating is the one that says the engines overheating we already know that so I’m gonna do a block leak check on this often some fool will change the
radiator when actually the engine is the problem and fixing the radiator
replacing it with a new one like this doesn’t fix anything if the engine is
blowing the head gas a simple test we get the test fluid and start the car
put the test tube over the radiator and take off top it never want to pull off that’s a job getting that off and pour it in and stick the top back on and do some suction now if this dark blue liquid turns
collard green a bright yellow means that gas go to the engines leakage and as you
can see it’s turning yellow quite a difference in color now this
doesn’t surprise me cuz the engine has two hundred and sixty six thousand seven
hundred and ninety-one miles on it and as I sit here and rev it up a little comes
down I can feel it rumbling it just doesn’t feel right to begin with it cost
a fortune to do a head gasket job and who knows a lot of corrosion may be the
heads corrosion inside it’s really not worth the money on this thing to take
the engine apart and attempt to fix it mechanically now the customers decided
to let me remove the thermostat and tried some sealer because if you put
sealer in with the thermostat a lot to make it stick shut then it will really
overheat so we’re gonna remove the thermostat put in some sealer and pray
at last go take the air filter out of the way and we’ll look down here the
thermostat is right inside here we just take the bolts off and we’ll get it out
so we on both the thermostat and there it is we’ll just cut the old thermostat
out so it can’t get stuck then we’ll pull this 3m sealer all over
and stick the gasket over now I use this 3m weather stripping gasket
sealant for two reasons one I don’t want it slipping when I put it in there’s no
working room so I’m gonna let it sit for half an hour while it dries then I’m
gonna put sealer on the outside and bolt the whole thing in that way it’ll
be sealed and not leaked I’ve had tons of them in the past leak if I didn’t use
sealer to hold it in place they’re going cockeyed you get a leak and then you’d
be screaming mad when you filled it up then we put the thermostat housing
back in get all the three bolts in and and put the hose back on then slide
the clamp on using pliers then clamps on nice and tight then want that phone we
don’t want any air leaks that hopefully comes a miracle in a can the bars head
gasket sealer which is part a whole can then pour the coolant in it came out then we start it up and pray the sealer
works now what you want to do now is let it idle about half an hour shut it off the sealer can do its thing let it sit
for a couple hours and then basically drive it around and see what happens
well so far it’s held up only times gonna tell on that but now you know what
to do if your engine is overheating even though you’ve already replaced the
radiator and it didn’t fix the problem in the first place, so if you never want
to miss another one of my new car repair videos, remember to ring that Bell

About the Author: Michael Flood


  1. Just remember the head gasket sealer should only be used as a last resort, replacing the head gasket is always the best option if you can afford it or are able to do it yourself

    ⬇️ Things used in this video:

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    2. 3M Gasket Adhesive: https://amzn.to/2l6Nljm

    3. Bar’s Head Gasket Sealer (Only Use as Last Resort): https://amzn.to/2lO4Mpl

    4. Common Sense

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  2. My 08 fx 35 thermostat stuck and it over heated today. was about 10 seconds after the cel came on that i shut it off. Hope it didn't get too hot. Pulled thermostat out and burped it. Back to normal.

  3. Use irontite motor seal, I used it on my 2008 Saturn Vue that have 198,650 miles and still holding up, I just change the heater core rubber hoses, radiator hoses, thermostat and the reservoir after letting the sealer dried for 24hrs then put in Peaks Global Final Charge 50/50 and it’s still working.

  4. My first car was a used Mazda RX-7 with the rotary engine. Loved that car, it was fast, standard, I was young at 18y/o. Somehow I managed to convince my dad to make the purchase. Sure enough about a year later it started having the same problems. The mechanic change the thermostat, didn't worked. He changed the radiator, didn't work. He changed a bunch of hoses, didn't worked. Not sure if rotor engines have head gaskets but he should have told my dad that was the real problem. The tool used some of the same liquid stop leak, my dad sold the car that same week and we went a bought a Honda Civic that lasted well into 2002 and made it from Florida to California when I joined the USMC. I remember the guy who had purchased the Mazda came back about a month later asking for his money back. LOL 😂

  5. I used a copper based product for a head gasket and on a 4.6 ford and that was yrs ago truck is still on road that magic gunk sometimes can be a real life changer

  6. Love these vids scotty. Just like when I first started watching you. Informative and honest. Glad I have a mechanic that Is just like you. Got over 365.000km on my Celica GT. Runs like a clock

  7. If the head gasket has gone bad then replace the head gasket. Not make a temporary fix. A mechanic gets paid with the work he does so if it took him a lot of things just to get to that gasket then so be it… He gets paid for it. the owner of the car can always decide whether to pay that much or not. The mechanic has no choice but to wait for the decision. Scotty is just a lazy old fart. I wont take my car to him. 🤭

  8. If it was a Chevy or a Toyota 266k is nothing I had a 94 Pontiac Bonneville sse super charged with 300k and that car would not die one of my sister's has 2000 Toyota Camry that has just turned 290k still runs and looks good.

  9. Just a heads up on the NIssan 4.0L. Aftermarket thermostats and fan clutches were notorious for not working correctly. Seen a lot of people that had a OEM thermostat or fan clutch fail after high miles. They put in an Autozone or Oreilly part and then continued to have overheating. Thinking it was something else they start moving onto radiators, water pumps etc. Turns out it just needed a quality replacement part.

  10. Well, if you've come to the conclusion that the head gasket is blown, why use sealant to patch thing up, when the proper way to solve the issue is to replace the head gasket?
    If you have a car and want to enjoy it then take care of it as it should. Don't be cheap and careless. If you can't afford the running costs of the car you own, then buy a car you can afford to maintain, otherwise walk.
    Because of people who neglect the cars and then patch them up instead of repair them properly, the websites are full of cars on sale that are hidden time bombs for the people who may want to buy a used car.
    I have 3 cars, one Mondeo MK1, one Mondeo MK3 and a Focus Cabriolet and you can imagine the costs of keeping them running well. Inspire of it all 3 cars are still on the road, running nice and tight and serving me well. But my secret is this: I take care of them myself, doing all the repairs needed, when are needed, without using cheap parts and using the proper tools. That takes time…time to learn, time to study and a lot of pride. The pride of doing it myself, with the care and attention to detail needed.
    I am proud of what I do, because I don't have to pay other people in my country, so called mechanics, to work on my cars. That's because today is very hard to find good mechanics who can work organized, taking care of parts they dismantle and put them back in order, without braking other components.

  11. When he started it at 4:00 I heard the timing chains whine. If the timing chains are making noise on a Nissan V6, that means a four digit repair bill. Couple that with the blown head gasket, and that engine is on it's last legs.

  12. Bars products are freaking terrible, why the hell would you use that scotty. What happened to the one you used before Steele something. Anyway blue devil is absolutely the way to go, just a liquid doesn't clog anything

  13. Why does Scotty always sound like he's frustrated trying to get his point across to a technical support representative from India with that thick accent?

  14. as a person who owns a 07 pathfinder with 177K on her, this just proves that Nissan made lasting cars built like tanks back then. despite what Scotty had to fix here lol

  15. Ah jus great got the 06 Nissan Pathfinder SE another thing to worry about mines about to hit 200k it’s fine now but just had to change a camshaft sensor . Now another code popped up p0430 think I need a new cat . Also gonna be breaks and rotors and alignment

  16. how long they been making cars ??…you'd think THEY or just ONE company would make a vehicle that was actually worth a crap and after 5 years on the road with no major problems the word would get around and everyone would be buying that brand …damn shame NOTHING is built worth a dollar and the prices of new vehicles ?? CRAZY..rolling junk piles

  17. It's not the cars fault that someone over heated the engine. On these trucks 266K mileage is common same with the Titans they are pretty solid trucks 👍

  18. A true mechanic diagnose problems. Posers just change random parts hoping to fix the problem (shotgun diagnosis). I call it "Spray and Pray"!

  19. Plz let everyone know this is a temporary fix if it works at all in the first place nothing in a can is a permit solution

  20. How long will this last. Why was there not white smoke from the exhaust. I used k-SEAL. i hear bue devil is best, but it can not be used with coolant. You have to flush it after, k-seal is coolant compatible. I drove it for a few days but something went wrong and made me late for work. At that point I traded it in with the understanding that it was going to whole sale auction as I did not want this to be sold to the general puplic and leave some one stranded. Yes the k-seal both stopped the external leak, coolant consumption and white smoke. but I will never know for how long. Old car, 234000 miles

  21. Had a 2003 Xterra that was as well built and reliable a vehicle as I've ever owned. Great engine and transmission in that vehicle. I understand that subsequent years have not been known for the same reliability. Shame. It was a great vehicle. I wouldn't buy a new Nissan today…and I like the way the 2020 Titan looks, but…

  22. Ok Scotty first of all the owner let it that engine overheat more than once to the point of deploying the knock sensor and blow a head gasket ,next the mechanic who work in that car before never ever replace the thermostat and sure enough the previous mechanic did not even replace the water heater pipe on the firewall ,since tends to leak after time and to finish the combo wrong coolant in the engine this engines do not use green coolant it only uses the blue type . I have three of this Nissan’s 2 Frontiers and 1 pathfinder and not a problem just follow the owners manual is there for a reason .one of my frontier have already 300k miles and running like a champ . Unfortunately like you it may not worth to fix it right but is up to every owner and not many mechanics like to work on Nissan’s like somebody I have seen on YouTube lately I wonder who is this guy? 🤔

  23. Hello Scott my name is Marco, i have. 2007 Nissan Frontier SE v6 4.0L. My low beam headlights are not working but my high beams work. They used short out and now they just dont work. HELP ME PLEASE.

  24. If they were just dead set on using a sealer.. you should have gotten Blue Devil…I'll tell you what… never seen anything work any better than that stuff…. there's a reason it's $60 a quart I've had the same scenario before with customers and that's what I used and it worked great…

  25. My mechanic and friend died a few years ago and he always looked after me, often worked late into the night to fix the car so I could get to work the next day and when the car needed changed he got me a new one Scotty reminds me so much of him totally honest and reliable mechanic and every car I got off him reached 200,000 miles he always said make sure it's got a full service history and stay clear of repo cars because if they can't afford the payments they can't afford the maintenance, I've very fortunately found another honest and reliable mechanic and I've got him looking for a replacement car and I'm taking Scotty,s advice and getting a 3 or 4 years old one with low mileage and full service history

  26. I tried bars leak on my 2001 Subaru didn't work
    So flushed engine real good and Used blue devel followed instructions to the letter
    And so far not a problem
    I also started with brand new radiator, hoses, thermostat,and timing belt and installed everything according to instuctions

  27. Suprising Scotty does not stumble onto many flood vehicles, like corrosion connectors due to car being submerged…only in Houston

  28. Scotty: "When this happens, your car is screwed!"
    Internet: "When what happens?"
    Scotty: "When your car is not a Toyota."

  29. Dude there isn't any Magic Potion that's going to fix a blown head or gasket just Change the gasket or head its not a big deal like you make it sound lol takes me about most 2 or 3 hours of work and vehicle woking like new again

  30. Exactly right, do your diagnostics before throwing parts at it.
    "My car won't start, I replaced the tires and installed new seat covers, but it still won't start! What am I doing wrong? Do I need new headlights?"

  31. I’ve used sealers before but never the ones with grit in them , I’ve always had luck with blue devil head gasket sealer , the other brands clogg the heater core and radiator

  32. Just replaced head gaskets and timing kit on the same engine, definitely not a good design. VQ and QR motors suck. C’mon Nissan, think of the people who buy your cars when it’s time to replace parts.

  33. Hey scotty. I have an '03 explorer with the 4.0 V6 with a blown headgasket. I'll highly concider using the sealent so i can sell the damn thing.

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