Fumes entering cab (sometimes)

ktmmike · 01-13-2015, 06:42 AM

Quote:

Originally Posted by glw

I, too, have the burnt oil smell post hard acceleration (with recirculate on?). It seems fairly common on newer cars (non-Nissan, too).

My guess is that the EGR valve is passing too much oil to the intake on hard acceleration and we're smelling the resultant burn. I was looking for a place to mount one to see if it helps, but there's no room in the stock engine bay.

Thank you glw!
BEST THEORY so far because it would explain the right type of smell.

I don't understand your last sentence though.
If the Z comes with an Exhaust Gas Recirculation valve, how can there NOT be room for it? Are you referring to a larger aftermarket EGR possibly?

*

glw · 01-13-2015, 09:39 AM

Quote:

Originally Posted by ktmmike

Thank you glw!
BEST THEORY so far because it would explain the right type of smell.

I don't understand your last sentence though.
If the Z comes with an Exhaust Gas Recirculation valve, how can there NOT be room for it? Are you referring to a larger aftermarket EGR possibly?

*

Sorry, I meant to write this as my last sentence... "I was looking for a place to mount one an oil catch can to see if it helps, but there's no room in the stock engine bay."

I also misused EGR... should have used PCV.

FPenvy · 01-12-2015, 09:41 AM

mine does this if i have the a/c-heater on in a stopped position. mine is exhaust fumes from having straight pipes. anything that isn't on the recirculate setting. if it's pulling from outside my exhaust fumes will creep in a bit. doesn't bother me though. windows are typically down anyways getting that raw burnt fuel smell lol

ktmmike · 01-12-2015, 09:54 AM

Quote:

Originally Posted by FPenvy

mine does this if i have the a/c-heater on in a stopped position. mine is exhaust fumes from having straight pipes. anything that isn't on the recirculate setting. if it's pulling from outside my exhaust fumes will creep in a bit. doesn't bother me though. windows are typically down anyways getting that raw burnt fuel smell lol

Thanx FPenvy, but this doesn't happen at a standstill at all

*

Dragon_Ball_Z · 01-12-2015, 10:34 AM

I have a 2014 sport and experience this as well. I thought it was just normal until my girlfriend smelled it too

-Raj

ktmmike · 01-12-2015, 10:49 AM

Quote:

Originally Posted by rajmangal7

I have a 2014 sport and experience this as well. I thought it was just normal until my girlfriend smelled it too

-Raj

Thanx Raj,

Do you smell it ONLY when the heater is on? on outside air? recirc? both?

Do you smell it ONLY under hard acceleration?

Sometimes mine smells a little too strong to be considered normal I think.

Dragon_Ball_Z · 01-12-2015, 12:29 PM

Quote:

Originally Posted by ktmmike

Thanx Raj,

Do you smell it ONLY when the heater is on? on outside air? recirc? both?

Do you smell it ONLY under hard acceleration?

Sometimes mine smells a little too strong to be considered normal I think.

I smell it a lot when I start the car. When I am normal driving at times and always under moderate acceleration, like I rarely bust redline, just normally to 5k. I was spirited driving the other day for about two minutes and it was pretty bad when I came to a stop. I am not sure about the ac thing. I normally leave mine off all the time, literally all the time. It is a really strong gas smell.

-Raj

ktmmike · 01-12-2015, 12:41 PM

Quote:

Originally Posted by rajmangal7

I smell it a lot when I start the car. When I am normal driving at times and always under moderate acceleration, like I rarely bust redline, just normally to 5k. I was spirited driving the other day for about two minutes and it was pretty bad when I came to a stop. I am not sure about the ac thing. I normally leave mine off all the time, literally all the time. It is a really strong gas smell.

-Raj

Thanx Raj,
Mine does NOT smell at all like GASOLINE, and never when I start the car.

I think we have two different problems. I'd be more worried about yours!

*

Dragon_Ball_Z · 01-12-2015, 01:23 PM

Quote:

Originally Posted by ktmmike

Thanx Raj,

Mine does NOT smell at all like GASOLINE, and never when I start the car.

I think we have two different problems. I'd be more worried about yours!

*

Are you stock?

-Raj

Elmo370z · 01-12-2015, 10:37 AM

I know they are threads on here about changing the fluids, I need to know the amounts of each, I haven't been able to find that.

Brake fluid: I'm going with redline.

Tranmission: Going with motul

Differential: Motul

Power steering: redline D6 ATF automatic transmission fluid????

ktmmike · 01-12-2015, 10:53 AM

Quote:

Originally Posted by Elmo370z

I know they are threads on here about changing the fluids, I need to know the amounts of each, I haven't been able to find that.

Brake fluid: I'm going with redline.

Tranmission: Going with motul

Differential: Motul

Power steering: redline D6 ATF automatic transmission fluid????

This thread is about fumes, Elmo
Not sure where the fluids thread is.

Spooler · 01-13-2015, 07:01 PM

Only time I get any smell is at cold start and it is only sometimes. As soon as I move out or the car warms up a little, it is gone. It's the sweet exhaust smell like all Nissan's do when they run rich at startup.

lj909 · 01-14-2015, 01:05 AM

I think the smell you getting is the PCV fumes. I get them in my car because i have then vented. If your car is new it shouldn't be escaping. You could check you PCV tubes and intake tubes. Make sure everything is on tight and no cracks.

ktmmike · 01-14-2015, 06:21 AM

Quote:

Originally Posted by lj909

I think the smell you getting is the PCV fumes. I get them in my car because i have then vented. If your car is new it shouldn't be escaping. You could check you PCV tubes and intake tubes. Make sure everything is on tight and no cracks.

Yeah, I checked all that first.
Thanx lj

ktmmike · 01-14-2015, 11:41 AM

The problem appears to be solved.

I tested the car today with heater on RECIRC.
Heavy acceleration and higher rpms up and down mountains. No fumes in cab!

BUT . . . placing this car on RECIRC is easier said than done!
I never thought I would have to RTFM just to operate a car heater, but I had to read this one because these crazy heating units have modes upon modes.

On page 4-26 under:
Automatic operation,
Cooling and/or dehumidified heating (automatic),
Year round,
Left dial: Fan on auto. A/C on (yes in the wintertime too apparently).
Right dial: Airflow to foot outlets, or dash outlets, or both (but NOT defrost, NOT foot/defrost).
Middle dial: set desired temp, THEN you can hit RECIRC (without it popping back to outside air).
Holy crap! What are the engineers thinking when they come up with all this %#@&?

Thank you all for your ideas.
Mike

*

01-12-2015, 10:34 AM	#5 (permalink)
Dragon_Ball_Z A True Z Fanatic Join Date: Jul 2014 Location: Mississippi Posts: 1,117 Drives: Nismo& Sport/Touring Rep Power: 18	I have a 2014 sport and experience this as well. I thought it was just normal until my girlfriend smelled it too -Raj __________________ Build in Progress

01-12-2015, 10:37 AM	#10 (permalink)
Elmo370z A True Z Fanatic Join Date: Apr 2013 Location: st. petersburg Posts: 5,727 Drives: 09 nissan 370z Sp M6 Rep Power: 295379	fluid change I know they are threads on here about changing the fluids, I need to know the amounts of each, I haven't been able to find that. Brake fluid: I'm going with redline. Tranmission: Going with motul Differential: Motul Power steering: redline D6 ATF automatic transmission fluid????

01-14-2015, 01:05 AM	#13 (permalink)
lj909 Track Member Join Date: May 2014 Location: Riverside Posts: 584 Drives: 40th 370Z Rep Power: 13	I think the smell you getting is the PCV fumes. I get them in my car because i have then vented. If your car is new it shouldn't be escaping. You could check you PCV tubes and intake tubes. Make sure everything is on tight and no cracks. __________________ PW 07 HR350Z R.I.P. Totaled by 82yr old woman 2010 40th Anniversary 370Z

01-14-2015, 11:41 AM	#15 (permalink)
ktmmike Base Member Join Date: Jan 2014 Location: NC/TN Mountains Posts: 36 Drives: '14 370Z Sport Coupe Rep Power: 12	The problem appears to be solved. I tested the car today with heater on RECIRC. Heavy acceleration and higher rpms up and down mountains. No fumes in cab! BUT . . . placing this car on RECIRC is easier said than done! I never thought I would have to RTFM just to operate a car heater, but I had to read this one because these crazy heating units have modes upon modes. On page 4-26 under: Automatic operation, Cooling and/or dehumidified heating (automatic), Year round, Left dial: Fan on auto. A/C on (yes in the wintertime too apparently). Right dial: Airflow to foot outlets, or dash outlets, or both (but NOT defrost, NOT foot/defrost). Middle dial: set desired temp, THEN you can hit RECIRC (without it popping back to outside air). Holy crap! What are the engineers thinking when they come up with all this %#@&? Thank you all for your ideas. Mike * SouthArk370Z likes this. __________________ 3 KTM SUPERMOTOS & a 2014 370Z

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01-13-2015, 07:01 PM	#12 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 14,120 Drives: 2013 Nismo 370z Rep Power: 2684394	Only time I get any smell is at cold start and it is only sometimes. As soon as I move out or the car warms up a little, it is gone. It's the sweet exhaust smell like all Nissan's do when they run rich at startup.