# My SR is smelly **URL:** \ **Category:** SON240sx Automotive\ **Created:** [December 30, 2007, 11:27pm UTC](https://forums.speedlife.net/t/my-sr-is-smelly/112120 "2007-12-30T23:27:01Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![kingtut](https://avatars.discourse-cdn.com/v4/letter/k/c2a13f/32.png) [@kingtut](https://forums.speedlife.net/u/kingtut)\ **Post date:** [December 30, 2007, 11:27pm UTC](https://forums.speedlife.net/t/my-sr-is-smelly/112120/1 "2007-12-30T23:27:01Z")
Hey guys, i noticed that my car has a strong fuel odour when im idling…i also noticed that when im ripping it on the street it REALLY reaks…i believe i am running rich for an unknown reason…i changed spark plugs today ( yes, the odour was present before and after the spark plug change) My question is whether this odour is normal…if its not then how can i diagnose my problem and if im running rich what can i do to lean it out a little…im using 89 octane because thats what the previous owner always used…any help is appreciated…Thanks is advance! ---
**Author:** ![Keez](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/keez/32/5570_2.png) [@Keez](https://forums.speedlife.net/u/Keez)\ **Post date:** [December 30, 2007, 11:32pm UTC](https://forums.speedlife.net/t/my-sr-is-smelly/112120/2 "2007-12-30T23:32:31Z")
you should go with higher octaine for sure. and does this car have a cat? my car stinks of gas but known reasons lead to that lol ---
**Author:** ![kingtut](https://avatars.discourse-cdn.com/v4/letter/k/c2a13f/32.png) [@kingtut](https://forums.speedlife.net/u/kingtut)\ **Post date:** [December 30, 2007, 11:49pm UTC](https://forums.speedlife.net/t/my-sr-is-smelly/112120/3 "2007-12-30T23:49:49Z")
yes this car does have a cat…why would using a higher octance illiminate the smell?.. ---
**Author:** ![Osad](https://avatars.discourse-cdn.com/v4/letter/o/3ab097/32.png) [@Osad](https://forums.speedlife.net/u/Osad)\ **Post date:** [December 31, 2007, 12:16am UTC](https://forums.speedlife.net/t/my-sr-is-smelly/112120/4 "2007-12-31T00:16:48Z")
It won’t, you just shouldn’t run a boosted motor on low grade fuel. ---
**Author:** ![kollo](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/kollo/32/5661_2.png) [@kollo](https://forums.speedlife.net/u/kollo)\ **Post date:** [December 31, 2007, 6:58am UTC](https://forums.speedlife.net/t/my-sr-is-smelly/112120/5 "2007-12-31T06:58:45Z")
are you running some sort of test pipe?that could do it ---
**Author:** ![JamesS](https://avatars.discourse-cdn.com/v4/letter/j/87869e/32.png) [@JamesS](https://forums.speedlife.net/u/JamesS)\ **Post date:** [December 31, 2007, 7:39am UTC](https://forums.speedlife.net/t/my-sr-is-smelly/112120/6 "2007-12-31T07:39:27Z")
Whats the mileage on the motor? Might be beneficial to remove the injectors and have them cleaned/flowtested and get new seals. ---
**Author:** ![roast](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/roast/32/5498_2.png) [@roast](https://forums.speedlife.net/u/roast)\ **Post date:** [December 31, 2007, 7:42am UTC](https://forums.speedlife.net/t/my-sr-is-smelly/112120/7 "2007-12-31T07:42:13Z")
IANAM, If I were you I’d check for vacuum leak. IANAM = I am not a mechanic. ---
**Author:** ![kingtut](https://avatars.discourse-cdn.com/v4/letter/k/c2a13f/32.png) [@kingtut](https://forums.speedlife.net/u/kingtut)\ **Post date:** [December 31, 2007, 8:38am UTC](https://forums.speedlife.net/t/my-sr-is-smelly/112120/8 "2007-12-31T08:38:38Z")
The mileage is approx. 100,000-120,000 km…no test pipe, i am running a 3’’ high flow cat…how would i go about checking for vacuum leaks?..the motor is bone stock other than the HKS filter and it even has the original MAF… ---
**Author:** ![Keez](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/keez/32/5570_2.png) [@Keez](https://forums.speedlife.net/u/Keez)\ **Post date:** [December 31, 2007, 10:47am UTC](https://forums.speedlife.net/t/my-sr-is-smelly/112120/9 "2007-12-31T10:47:48Z")
also, are you sure you just dont have a gas leak? if you replaced your fuel pump for a walbro, and did not get a new seal and re-used the old one…they never seal proper and you will always have a smell in your car. if your running rich do you ahve any buildup around your rear bumper above your exhaust??? ---
**Author:** ![spooolin](https://avatars.discourse-cdn.com/v4/letter/s/48db29/32.png) [@spooolin](https://forums.speedlife.net/u/spooolin)\ **Post date:** [December 31, 2007, 11:03am UTC](https://forums.speedlife.net/t/my-sr-is-smelly/112120/10 "2007-12-31T11:03:51Z")
Konvokiller took the word right out of my mouth… If you Or previous owner installed a walbro or different fuel pump it could not be sealing properly at the top of the tank… Also. has the smell always been there? or are u just noticing it now? are u sure you dont have a fuel leak? hows the fuel mileage? ---
**Author:** ![CrypticNissan](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/crypticnissan/32/5663_2.png) [@CrypticNissan](https://forums.speedlife.net/u/CrypticNissan)\ **Post date:** [January 1, 2008, 1:21pm UTC](https://forums.speedlife.net/t/my-sr-is-smelly/112120/11 "2008-01-01T13:21:26Z")
common prob with old car… gas tank rusts and right were the sending unit is can crack causing it to smell… check you tank over really well for rust/cracks/wet spots. ---
**Author:** ![Keez](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/keez/32/5570_2.png) [@Keez](https://forums.speedlife.net/u/Keez)\ **Post date:** [January 1, 2008, 11:48pm UTC](https://forums.speedlife.net/t/my-sr-is-smelly/112120/12 "2008-01-01T23:48:19Z")
by the way, is the smell your tlaking about burned fuel? like really rich, or like fresh in tank fuel? if so you can have a gas leak, if you dont notice it on hte ground lol, or the FSU (fuel sending unit) is not sealed…i didnt have a gasket for like 3 days it sucked. ---
**Author:** ![kingtut](https://avatars.discourse-cdn.com/v4/letter/k/c2a13f/32.png) [@kingtut](https://forums.speedlife.net/u/kingtut)\ **Post date:** [January 2, 2008, 12:14am UTC](https://forums.speedlife.net/t/my-sr-is-smelly/112120/13 "2008-01-02T00:14:35Z")
hmmm… well it smells like a bit of both…there could be some sort of gas leak but im not sure how to check for anything like that…but when im driving and i put the pedal down…i can really smell what i believe is burnt fuel…there are no leaks when idling or anything like that…how can i go about checking all the possible problems that might be present???