After getting a new exhaust i smell gas during start up
#1
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After getting a new exhaust i smell gas during start up
I have an 05 nissan 350z with Greddy Spectrum Elite - SE (http://www.andysautosport.com/nissan...d00247355.html) I bought it from a friend and he installed it for me. I smell gas near the exhaust after i start up the car. Once i start driving it seems to go away. I told my friend he said that its normal because the air flow more smoothy? I'm not sure so i was just wondering if anyone knew what is wrong with it. I don't notice any leaks in my drive way nor is the engine like on. I research seeing some called as running rich? or something not sure if thats it. I only use premium gas. No gas smell inside the car. I also got a intake installed K&N (http://store.knfilters.com/search/pr...x?Prod=57-6013) The car does sound louder when starting and turning off the car even tho its normal lol just to let u guys know but when i turn it off it makes some vroom/bump noise it actually sounds cool to me. It seems to be loud because my dad can hear it from the house and asked y my car so loud. Been driving it for a while now. The performance is great though. The stock exhaust didn't have the gas smell. feel free to reply and thanks for reading!
Last edited by NguyenEvan; 01-06-2012 at 02:43 AM.
#2
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YOu probably have an exhaust leak, do you get the smell anytime you are parked at idle?
#3
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Should not smell gasoline. Catalytic converter should burn all unburned fuel.
a. Exhaust leak before catalytic converter.
b. Catalytic converter no longer working.
c. Catalytic converter function properly - Fuel mixture way too rich for catalytic converter to cope.
BTW a rich fuel mixture will take a toll on catalytic converters.
a. Exhaust leak before catalytic converter.
b. Catalytic converter no longer working.
c. Catalytic converter function properly - Fuel mixture way too rich for catalytic converter to cope.
BTW a rich fuel mixture will take a toll on catalytic converters.
#4
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Ur parents dident notice u changed it I remember when I was 17 when I first got my z 3 months in I put on test pipes and had to creap out of town my mom and dad would call me and tell me to slow down. Cause they could hear me comming and I was like 3 miles away now I can be herd from like 6lol but it's all good I'm only 20 still live at home and work nights an hour away so it let's my moms know I'm home safe when she hears me comming. Also just tell them the intake and exhaust helps you get better gas milage just get a tune with it I make 299.9whp and get between 25 and 30 mpg high way
#5
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I had a Greddy SE and short ram intakes on my car. I never noticed a gas smell after installing either. The SE is just a muffler so it will not change A/F and I highly doubt filters will do much either.
Get your A/F checked, if it's good then you may have an exhaust leak or bad cat like David said
Get your A/F checked, if it's good then you may have an exhaust leak or bad cat like David said
#7
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Did you use old gaskets when installing the exhaust or new ones? Could be from those. Also ive read that aftermarket exhausts get hotter than stock and don't have heat shields, so a funny smell could be attributed to paint curing. Don't know how well that story holds though. Just something i read.
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#10
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Did you use old gaskets when installing the exhaust or new ones? Could be from those. Also ive read that aftermarket exhausts get hotter than stock and don't have heat shields, so a funny smell could be attributed to paint curing. Don't know how well that story holds though. Just something i read.
#11
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I forgot something to mention about the car. I bought it from a guy that lives near a beach and the stock exhaust was rusted as u can see. can it be the reason why gas leak out because the rust made it impossible for the exhaust and the tube to connect without any gab between because of the rust? http://s1087.photobucket.com/albums/...20106-1422.jpg
He also took this piece out because my car was in a fender bender by the first owner and the muffler would slightly hit this piece while driving on bumpy road
http://s1087.photobucket.com/albums/...20106-1418.jpg
These are the exhaust i bought from him
http://s1087.photobucket.com/albums/...11224-0722.jpg
He also took this piece out because my car was in a fender bender by the first owner and the muffler would slightly hit this piece while driving on bumpy road
http://s1087.photobucket.com/albums/...20106-1418.jpg
These are the exhaust i bought from him
http://s1087.photobucket.com/albums/...11224-0722.jpg
Last edited by NguyenEvan; 01-06-2012 at 01:35 PM.
#12
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Put on some heat resistant gloves, stick some rags in the exhaust pipes and hold tight while engine is idling, if exhaust is leaking it will get louder at source. Be careful when you do this, if you can't hear well enough have someone give it a little gas while you are holding the rags.
And please to be removing the Nismo badge from engine cover, thanks.
And please to be removing the Nismo badge from engine cover, thanks.
#13
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Put on some heat resistant gloves, stick some rags in the exhaust pipes and hold tight while engine is idling, if exhaust is leaking it will get louder at source. Be careful when you do this, if you can't hear well enough have someone give it a little gas while you are holding the rags.
And please to be removing the Nismo badge from engine cover, thanks.
And please to be removing the Nismo badge from engine cover, thanks.
#14
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I forgot something to mention about the car. I bought it from a guy that lives near a beach and the stock exhaust was rusted as u can see. can it be the reason why gas leak out because the rust made it impossible for the exhaust and the tube to connect without any gab between because of the rust? http://s1087.photobucket.com/albums/...20106-1422.jpg
He also took this piece out because my car was in a fender bender by the first owner and the muffler would slightly hit this piece while driving on bumpy road
http://s1087.photobucket.com/albums/...20106-1418.jpg
These are the exhaust i bought from him
http://s1087.photobucket.com/albums/...11224-0722.jpg
He also took this piece out because my car was in a fender bender by the first owner and the muffler would slightly hit this piece while driving on bumpy road
http://s1087.photobucket.com/albums/...20106-1418.jpg
These are the exhaust i bought from him
http://s1087.photobucket.com/albums/...11224-0722.jpg
#15
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I notice this today when it was in parking/idle its way below then before...
http://i1087.photobucket.com/albums/...20110-1836.jpg
http://i1087.photobucket.com/albums/...20110-1836.jpg
#16
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I notice this today when it was in parking/idle its way below then before...
http://i1087.photobucket.com/albums/...20110-1836.jpg
http://i1087.photobucket.com/albums/...20110-1836.jpg
Normal... warmed up at idle.
#17
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I think i just found out wat happened. Because the cold air intake was installed by my friend didn't unplug battery and now the check engine light is on now.... and service engine soon light as well... What do i do now? drive to a mechanic? dont drive the car at all until problem is solve? my friend has my oem intake.... I also researched online and some said the intake may have been damage while re installing and would have to replace it? i sure hope not..
Last edited by NguyenEvan; 01-12-2012 at 12:16 AM.
#18
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This just went off the derp end. I don't think you have the basic mechanical know-how to figure this out, take it to a reputable mechanic. It's ok to drive as long as the check engine light isn't flashing.
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