I (don't) love the smell of napalm in the morning...
#1
I (don't) love the smell of napalm in the morning...
For some time now, the exhaust from my 4th Gen I30 has smelled like raw gasoline whenever I start it...especially when it is cold.
I do not have a fuel leak, so I know it is not that. What else can cause that smell?
Enquiring mind wants to know!
I do not have a fuel leak, so I know it is not that. What else can cause that smell?
Enquiring mind wants to know!
#2
Cold starts always cause the car to run rich - it's normal.
Once fully warmed up, the smell should not be there.
What sort of mpg are you getting
And the customary, any ECU codes?
FYI, running rich is determined by the ECTS during open-loop and O2 sensors otherwise.
Once fully warmed up, the smell should not be there.
What sort of mpg are you getting
And the customary, any ECU codes?
FYI, running rich is determined by the ECTS during open-loop and O2 sensors otherwise.
#5
Originally Posted by Ricksi30
i have the same problem 96 i30....and my mpg are about 16 without a/c and about 13 with a/c...but i have always noticed that the smell was to strong idk?? any help
![faint](https://maxima.org/forums/images/smilies/faint.gif)
how are you measuring your mpg?
![Squint](https://maxima.org/forums/images/smilies/squint.gif)
#6
Originally Posted by njmodi
![faint](https://maxima.org/forums/images/smilies/faint.gif)
how are you measuring your mpg?
![Squint](https://maxima.org/forums/images/smilies/squint.gif)
#7
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Originally Posted by Ricksi30
Im not an idiot i dont wait untill i get low and divide......i fill up drive until i get a little less than a quarter tank fill up see how much it takes and divide the best i ever got was ~ 18mpg
![hide](https://maxima.org/forums/images/smilies/hide.gif)
-matt
#8
Originally Posted by Ricksi30
Im not an idiot i dont wait untill i get low and divide......i fill up drive until i get a little less than a quarter tank fill up see how much it takes and divide the best i ever got was ~ 18mpg
![clap](https://maxima.org/forums/images/smilies/clap.gif)
Any ECU codes? check your o2 sensors, ECTS, injectors... 18mpg is LOW.
#9
Originally Posted by Ricksi30
i have the same problem 96 i30....and my mpg are about 16 without a/c and about 13 with a/c...but i have always noticed that the smell was to strong idk?? any help
#16
Originally Posted by 99grnmaxgxe
I told you, go to Autozone, they check for codes FREE! There's one on Prince and Fairview, 1st and Glenn, and Silverbell and Speedway.
#17
Originally Posted by Ricksi30
Thanks a lot man...i just got back from the ina/thornydale location and the only thing that came up was the knock sensor....they said that "it was a warning that a piston might blow" and that it didnt affetct mpg??? any ideas??
![rolling eyes](https://maxima.org/forums/images/smilies/rolling_eyes.gif)
That's why you ALWAYS trust what you hear from Autozone and other parts stores. Those guys are friggin' geniuses. I don't know how they do it.
...
ummmm no
![Rotz](https://maxima.org/forums/images/smilies/rotz.gif)
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#18
Originally Posted by njmodi
![rolling eyes](https://maxima.org/forums/images/smilies/rolling_eyes.gif)
That's why you ALWAYS trust what you hear from Autozone and other parts stores. Those guys are friggin' geniuses. I don't know how they do it.
...
ummmm no
![Rotz](https://maxima.org/forums/images/smilies/rotz.gif)
![BangHead](https://maxima.org/forums/images/smilies/banghead.gif)
![Butt Shex](https://maxima.org/forums/images/smilies/gaysex.gif)
#23
Originally Posted by Ninos_Maxima
i thought 270 to a full tank was normal... and thats when i get lucky
#26
Originally Posted by Ninos_Maxima
i thought 270 to a full tank was normal... and thats when i get lucky
everyone else > mine
and ive done all maintenance and everything, theres nothing left to do!!!
#27
My friend, check your fuel injector seals. One of them is most likely leaking. key on the ignition a few times and build up fuel pressure. Then wait a few mins and go smell around the fuel rail. I had an injector leak and I went nuts trying to find the source of fuel odor.. finally it was right there.
#28
Originally Posted by goldtooth
wow, u guys are so lucky hitting over 250 in all city.....
everyone else > mine
and ive done all maintenance and everything, theres nothing left to do!!!
everyone else > mine
and ive done all maintenance and everything, theres nothing left to do!!!
your gold tooth adds too much weight to the car you should get rid of it and that should help out with the mpg.
But yah either you have a lead foot on the pedal or I just baby my car cause I get around 375city and around 430 highway on a full tank.
#29
Originally Posted by PAREDLINE
My friend, check your fuel injector seals. One of them is most likely leaking. key on the ignition a few times and build up fuel pressure. Then wait a few mins and go smell around the fuel rail. I had an injector leak and I went nuts trying to find the source of fuel odor.. finally it was right there.
Leaky fuel injector makes sense (it was on my list of possibles).
Njmodi: the gas smell is always there when I start it up, even after the car is warm.
I get around 17-18 mpg city, which is mostly do to my lead foot..but, it is a no-brainer that my mileage would be better if I did not have that smell...right?
No ECU codes have popped up, either.
No codes, no pings, and the car accelerates just fine, which sort of casts doubt on it being a bad knock sensor.
There are a lot of things that affect gas mileage, like bad O2 sensors, but not that many things cause a gassy exhaust.
If I had a way to get my exhaust tested, that would help.
OK, folks. Back on task here...
#31
Originally Posted by 99grnmaxgxe
If you don't already, try premium gas and see if that helps your mileage.
After experimenting with using lower grades last year, I have been using only good grades of premium like Chevron, BP, and Shell.
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