I have over 200k on my g37 and I just changed this piece luckily i caught it in time before it broke . That plastic was so soft and brittle it was just a matter of time
This just happened to my 2008 g35, I was on here looking for a head gasket replacement video assuming the worst of it. Until I came across your video, which made me want to check that area out and because when I filled up the radiator to the top I heard water gushing out of somewhere behind the engine. Thanks for the video man with out I would still be scratching my head stressing about a head gasket on this vq35hr which looked like a pain to do.
I have the same car, same year, same model and the same issue. A friend that has one told me it was the gasket as well so I was looking for one. I too am glad I came across this video
exactly my issue when my car overheated .,i would have missed it without u pointing out the issue ,thx for the part size also ,once the part was changed car was good again,30 dolllar fix with coolant,ive could've spent more taking to a shop , and them lying about what the issue actually was.And my plastic also came out in small pieces,that pain to take out and the clamps were pain to take off and put on ,tight space to work in
On my Infiniti Q50 2015 with 3.7 the heater hose connection broke since it’s made of plastic. It’s in back of engine passenger side for me on firewall and I would recommend buying aluminum one with bleeder from z1 Motorsports
Bro I have g35 hr I found watar in the engine mix with oil and car never overheating Coolant is good no oil How to check watar pumb or its head gasket problem
Next time let me know, I have a radiator funnel, also a Venturi filler to fill it with an air compressor, and have a pressure tester to see if you have any other leaks
Lmao this happened to me on my 2011 g37x. My car went up in smoke (steam) randomly when I parked somewhere. The coupler that Infiniti uses for that heater hose is a plastic that basically erodes and breaks. I replaced mine with metal. (Almost exactly what you did) Lol
Cars that need oil consumption as a monthly i wouldn't recommend for places over 100 degrees everyday for months straight. Theres waaaayyy to many parts under the hood that will feel the heat as well.( Most packed cars of all time!)
Yup mined is a 2008 ex35 (vq35hr)and sure enough the connector peice one day while heat was on sent a puff of smoke from right side up under my hood, did it twice then went away as i was in motion, turned heat off immediately, long story short 2 weeks later due to leak always drying before i can find it, parked it on a hill turned heat on and BAM leaking at connector, baught extra hoses and things but literally only connector peice literally snapped in half and was brittle and broke apart as i was taking it apart..... took a good hour to 2 to do so cause i shouldve purchased long needle nose pliers.....but yea problem fixed!
Your barb was a good fix for temporary but the z1 fitting with bleeder screw should be your long term fix. It will help get all bubbles out of your system and make flushes easy for future.
What do you mean exactly? it doesnt crank at all? Cranks but doesnt start? or cranks and stumbles but doesnt stay on? If it was also over heating the biggest concern is loss of compression through the headgaskets.
The reason you’ve got a bank 1lean fuel code is because the oxygen sensor is directly below the leak and is either causing electrical connection issues at the sensor or causing faulty readings due to dumping coolant on exhaust /cat resulting in temperature variation between banks . I’m betting you didn’t see this code come up after fixing coolant leak.
Bro it just happened with me that coupling broke off, i replaced it, but still overheating and coolant looks is full , judging by reservoir. Took it to the shop they estimated $3500 . Blowed up gasket. Now i don’t know what to think
It wasn't a head gasket issue, it was just a heater hose that broke. Some people say it's common, i personally have not seen many G35/7s with head gasket issues.
Tbh me and my friends all bought g's during highschool before selling and going to uni. We beat the living shit out of them and they would never give up. We all had vhr and hr motors. Vhr is the best but there was a common issue with the oil gallery seal leaking. My 2013 g37x never had a single issue and my friends 37's and 35's didn't either.
I had some smoke inside the car on my g35x 2008. It had not coolant at all when I bought it which has me wondering where’s the escape. The smoke from the dash has me worried about the heater core😔 engine sounds good no knocking and maintains tempature but I’m scared to turn the heat on… what you guys think?
Smoke or steam? Steam would point toward the heater core, i would turn the heater on and see what happens just to make sure what the issue is. If its smoke, its probably a valve cover leaking oil onto the exhaust.
i have a question yesterday i was driving my g37 nd did a baby pull then notice smoke was coming out, today i checked nd the heater hose broke, just like yours. do you think there’s head gasket damage?
@Garage23 I am trying to work on a 2013 G37. It overheated from I believe coolant leaked. Engine stalled while driving, but it was able to start after it cooled down. I'm wondering if it sustained head gasket damaged.
It's pretty rare for vq37s to have head gasket issues. They're not perfect but it's definitely not one of the most common things you have. Sitting at 245k in my VQ
Hi! My husband bought his Infiniti g37 sport coupe back in December from a used car dealership. Less than a month of having it, it started having CO2 sensor problems and engine problems. We took it back to the dealership and they replaced the engine and said that the problem was that coolant got into the engine somehow. We recently got the car back and it has white smoke coming out of the tail, they said it would clear in two days and it still hasn’t. What do you think we should do?
I doubt they changed the whole engine out, and if they did the new one definitely has blown head gaskets if it is billowing out white smoke. I would keep complaining to them or try and get them to trade in for a different car.
Hey I’ve been having a few overheating issues with my q50 3.7 and recently I thought it was all fixed until I did a pull and the radiator completely blew . Could it be that my head gaskets are blown?
It's a possibility, if its leaking compression into the coolant system I suppose it could blow up the rad. You'd need to do a compression check on all cylinder to rule that out.
So the same thing happened to me but expect my car keeps on overheating I replaced the hoes with a Longer hoes that way I don't have to keep on replacing the hoes connector but the car still overheats any suggestions
Assuming you bled the coolant thoroughly, the next things would be pressure testing the coolant system and engine compression to make sure you didnt blow the headgasket. Also could try replacing the thermostat as that might have been the root cause initialy.
Hello would you have Instagram I need help I have a 2008 g35 I was driving one day and I stopped at a gas station and noticed it was leaking coolant so I was una rush that day and I proceeded too go home as I’m driving I’m 2 miles away from my house I noticed the car was overheating I let it sit for some time and then proceeded too drive after it was at normal temperature I get home but the car overheated again I get home turn of the car and till a week later I try too turn the car on I added coolant and the battery was dead so 3 weeks later I charge it and turn it on and it starts and obviously it starts leaking a bit so I test drive it for like 10 minutes and everything is good I noticed the heater hose was broken but then I checks the coolant reservoir and it was like I poured a cup of oil in there and the dipstick is still just oil is it my headgasket ?
If there is oil in your coolant it is very likely the head gasket is damaged. Especially if it is still overheating after you repaired the leak. I would have a professional examine it to make sure.
@@Garage23 oh no it doesn’t overheat after I charged the battery I drove it while it was leaking for like 10 minutes and then I let it sit for like 20 and it didn’t overheat but I haven’t changed the part
This was really neat watching you go through the process of diagnosing the issue
Appreciate the support! I was so glad it wasn't something more serious.
I have over 200k on my g37 and I just changed this piece luckily i caught it in time before it broke . That plastic was so soft and brittle it was just a matter of time
This just happened to my 2008 g35, I was on here looking for a head gasket replacement video assuming the worst of it. Until I came across your video, which made me want to check that area out and because when I filled up the radiator to the top I heard water gushing out of somewhere behind the engine. Thanks for the video man with out I would still be scratching my head stressing about a head gasket on this vq35hr which looked like a pain to do.
Glad to help 😅 gotta hate all the plastic they use in modern engines 🙄
I have the same car, same year, same model and the same issue. A friend that has one told me it was the gasket as well so I was looking for one. I too am glad I came across this video
@@dangelobain9060 glad to help! Was it the same plastic coupler that broke on yours too?
This is great information to have, thanks again!
exactly my issue when my car overheated .,i would have missed it without u pointing out the issue ,thx for the part size also ,once the part was changed car was good again,30 dolllar fix with coolant,ive could've spent more taking to a shop , and them lying about what the issue actually was.And my plastic also came out in small pieces,that pain to take out and the clamps were pain to take off and put on ,tight space to work in
Glad it helped you out! Yeah its a pretty easy fix but man it really ruins your day.
That heater-core coolant union is a weak point. It's one of those things that you pretty much have guaranteed break on these engines.
Where is this part located? When I call the dealer what do I say when looking for the part? Thank you in advanced!
On my Infiniti Q50 2015 with 3.7 the heater hose connection broke since it’s made of plastic. It’s in back of engine passenger side for me on firewall and I would recommend buying aluminum one with bleeder from z1 Motorsports
@@Pelonfairf13ldflatz I would second this. The aluminum one from Z1 with the bleed Port is what I used
Great video, I had the same thing happen to me today and I was thinking I had damaged my engine. I will see tomorrow if the engine starts fine
I'll cross my fingers and toes for you 🤞🏻
Bro I have g35 hr
I found watar in the engine mix with oil and car never overheating
Coolant is good no oil
How to check watar pumb or its head gasket problem
Next time let me know, I have a radiator funnel, also a Venturi filler to fill it with an air compressor, and have a pressure tester to see if you have any other leaks
Actually might need that, i still keep smelling coolant even though its not overheating anymore
Beware the Fan Control Module going out next :)
Lmao this happened to me on my 2011 g37x. My car went up in smoke (steam) randomly when I parked somewhere.
The coupler that Infiniti uses for that heater hose is a plastic that basically erodes and breaks. I replaced mine with metal. (Almost exactly what you did) Lol
Yeah it’s really annoying how they make crucial parts out of cheap plastic
i have a 2012 g37 journey and that same thing happened to me
Cars that need oil consumption as a monthly i wouldn't recommend for places over 100 degrees everyday for months straight. Theres waaaayyy to many parts under the hood that will feel the heat as well.( Most packed cars of all time!)
Yup mined is a 2008 ex35 (vq35hr)and sure enough the connector peice one day while heat was on sent a puff of smoke from right side up under my hood, did it twice then went away as i was in motion, turned heat off immediately, long story short 2 weeks later due to leak always drying before i can find it, parked it on a hill turned heat on and BAM leaking at connector, baught extra hoses and things but literally only connector peice literally snapped in half and was brittle and broke apart as i was taking it apart..... took a good hour to 2 to do so cause i shouldve purchased long needle nose pliers.....but yea problem fixed!
Hahaha just fixed my 2009 g37x using this video....good stuff
Nice! Doesn't help that they make everything out of plastic now a days 😅
I should of used a metal one like yours but auto zone didn't have them so I see my self having to do this again lol 😆
I have the same coupe model with the same issue
Your barb was a good fix for temporary but the z1 fitting with bleeder screw should be your long term fix. It will help get all bubbles out of your system and make flushes easy for future.
Have a link for the z1 fitting? Just had this same problem.
You have a great edits on this video. Your funny as fuck on the low
Thanks! Glad you appreciate the editing😁
This is the most relevant video to what happen to my 2008 g37 but the only thing is that my car won’t start. Any suggestions?
What do you mean exactly? it doesnt crank at all? Cranks but doesnt start? or cranks and stumbles but doesnt stay on? If it was also over heating the biggest concern is loss of compression through the headgaskets.
Will crank over but it won’t start at all. But yeah everyone I ask says I list compression
@Garage23 hey bro do you by any chance have the link for the obd scanner you used in the video the bluetooth one ??
Not specifically but I’m sure I got it from Amazon, pretty much any obd Bluetooth adapter is suitable nowadays
The reason you’ve got a bank 1lean fuel code is because the oxygen sensor is directly below the leak and is either causing electrical connection issues at the sensor or causing faulty readings due to dumping coolant on exhaust /cat resulting in temperature variation between banks . I’m betting you didn’t see this code come up after fixing coolant leak.
Correct, code didn't come back. I figured it was just the air fuel ratio going out the window since the temp sensor didn't have any coolant to read.
@@Garage23 i think this guy was exactly right haha 😂
I thought I could’ve blown the head gasket driving 5 min over heating lmao you drove 25 minutes
Probably longer than that, and it's still fine. 😅
Bro it just happened with me that coupling broke off, i replaced it, but still overheating and coolant looks is full , judging by reservoir. Took it to the shop they estimated $3500 . Blowed up gasket. Now i don’t know what to think
It is very likely that you can blow a head gasket when this happens, we were lucky we were only a block away from home.
@@Garage23 yo bro, head gasket was good 🙌
my mistake was i didn’t added coolant directly to radiator , after replacing that coupling.
Planning on getting a G37 soon are these head gasket issues common ?
It wasn't a head gasket issue, it was just a heater hose that broke. Some people say it's common, i personally have not seen many G35/7s with head gasket issues.
Tbh me and my friends all bought g's during highschool before selling and going to uni. We beat the living shit out of them and they would never give up.
We all had vhr and hr motors.
Vhr is the best but there was a common issue with the oil gallery seal leaking.
My 2013 g37x never had a single issue and my friends 37's and 35's didn't either.
It randomly broke because there's a plastic piece in between which is totally missing and likely disintegrated.
I did notice that later. On my Z there is a bleeder port in that location.
Not sure if i missed it dis you not her the milkshake oil?
Nope no milkshake, car is still running fine to this day
I had some smoke inside the car on my g35x 2008. It had not coolant at all when I bought it which has me wondering where’s the escape. The smoke from the dash has me worried about the heater core😔 engine sounds good no knocking and maintains tempature but I’m scared to turn the heat on… what you guys think?
Smoke or steam? Steam would point toward the heater core, i would turn the heater on and see what happens just to make sure what the issue is. If its smoke, its probably a valve cover leaking oil onto the exhaust.
Mine broke in same spot
I have the same exact issue, do you know the name of that specific hose?
Front heater hose is the best name I could find.
www.infinitipartsdeal.com
Search/g37/2012/sedan/ part# 27185
The connector is what broke on ours.
@@Garage23 Thanks my man!
Were you noticing any smoke when you parked after driving on left side from driver seat view?
No not really, when you actually blow a headgasket you usually get huge plumes of white smoke. But we didnt see any of that.
i have a question yesterday i was driving my g37 nd did a baby pull then notice smoke was coming out, today i checked nd the heater hose broke, just like yours. do you think there’s head gasket damage?
It's possible, if you still have a lot of white smoke after you fix the hose and refill the coolant then most likely the head has warped.
What was the size of that coupling? And is it brass?
Yeah brass barbed fitting, I believe it was 3/4”
@Garage23 I am trying to work on a 2013 G37. It overheated from I believe coolant leaked. Engine stalled while driving, but it was able to start after it cooled down. I'm wondering if it sustained head gasket damaged.
It’s a possibility, do a leak down test or compression test and check for water in the oil. If that looks good you might be ok
All Infinitis have Head Gasket issues. FACTS
Any car is gonna have headgasket issues if theres no coolant in it 🤣
@@Garage23 Please don't make excuses for that POS Renault 3.7 engine.
It's pretty rare for vq37s to have head gasket issues. They're not perfect but it's definitely not one of the most common things you have. Sitting at 245k in my VQ
@@TheCamaro1987 No car is perfect... (I mean, including those the most expensive or reliable cars!!!🤣)
I'm gonna say that Nissan/Infiniti have coolant issues period and are a pain to bleed the air out of👍
Hi! My husband bought his Infiniti g37 sport coupe back in December from a used car dealership. Less than a month of having it, it started having CO2 sensor problems and engine problems. We took it back to the dealership and they replaced the engine and said that the problem was that coolant got into the engine somehow. We recently got the car back and it has white smoke coming out of the tail, they said it would clear in two days and it still hasn’t. What do you think we should do?
I doubt they changed the whole engine out, and if they did the new one definitely has blown head gaskets if it is billowing out white smoke. I would keep complaining to them or try and get them to trade in for a different car.
@@Garage23 Thank you!!
Hey I’ve been having a few overheating issues with my q50 3.7 and recently I thought it was all fixed until I did a pull and the radiator completely blew . Could it be that my head gaskets are blown?
It's a possibility, if its leaking compression into the coolant system I suppose it could blow up the rad. You'd need to do a compression check on all cylinder to rule that out.
@@Garage23 welp I just did a compression test on all of the cylinders and they were all good. Any other ideas ?
You almost got a freaky car killed
So the same thing happened to me but expect my car keeps on overheating I replaced the hoes with a Longer hoes that way I don't have to keep on replacing the hoes connector but the car still overheats any suggestions
Assuming you bled the coolant thoroughly, the next things would be pressure testing the coolant system and engine compression to make sure you didnt blow the headgasket. Also could try replacing the thermostat as that might have been the root cause initialy.
@@Garage23 ok thanks I noticed the fans aren't turning on so it could be that so I'll check everything else after I check the fans
Lol mine did that new year
That's one way to start the new Year 😅🎊
Let it cool all the way first even if it takes a long time or two it wth why why why , cant even watch this !!!
can anyone answer what 3 quarter inch ml is? I'm trying to to find this part.
3/4” male to 3/4” male barb fitting. It should be in the plumbing section of most home improvement stores
@@HimuraRoux I got it and put it on with the tightening clamps instead of the factory ones.
@@whuzup3 how’s it holding on so far ? Please let me know asap
@@jose76ontop46 It seems like it's holding. I haven't had any issues.
I have the same broken part 😂
Ugh you know the struggle!
What’s the name of that part ?? !!
This guy knows instant transmission? WTFF
Hello would you have Instagram I need help I have a 2008 g35 I was driving one day and I stopped at a gas station and noticed it was leaking coolant so I was una rush that day and I proceeded too go home as I’m driving I’m 2 miles away from my house I noticed the car was overheating I let it sit for some time and then proceeded too drive after it was at normal temperature I get home but the car overheated again I get home turn of the car and till a week later I try too turn the car on I added coolant and the battery was dead so 3 weeks later I charge it and turn it on and it starts and obviously it starts leaking a bit so I test drive it for like 10 minutes and everything is good I noticed the heater hose was broken but then I checks the coolant reservoir and it was like I poured a cup of oil in there and the dipstick is still just oil is it my headgasket ?
If there is oil in your coolant it is very likely the head gasket is damaged. Especially if it is still overheating after you repaired the leak. I would have a professional examine it to make sure.
@@Garage23 oh no it doesn’t overheat after I charged the battery I drove it while it was leaking for like 10 minutes and then I let it sit for like 20 and it didn’t overheat but I haven’t changed the part