Ducati Monster Forum

Moto Board => Tech => Topic started by: sebastienb on December 26, 2012, 01:39:30 PM

Title: Gas smell after ride ?
Post by: sebastienb on December 26, 2012, 01:39:30 PM
Hi guys, I recently moved from an open garage in an apartment  building to a house with a closed garage. After a ride I always park inside the garage and a few minutes after the smell of gas fills the garage. Is this normal ? 2011 monster 796
Title: Re: Gas smell after ride ?
Post by: The Bearded Duc on December 26, 2012, 03:04:07 PM
Do you fill up before coming home? Might just be a slight draining from the overflow hole at the gas cap when the bike is on the side stand.

Every now and again I'll notice a small overflow puddle under my bike once it's on its side stand, always after trying to get more fuel into the tank than it needs (slight over fill).

Should be nothing to worry about but, to be safe, check all your hoses and connections for leaks and/or cracks.
Title: Re: Gas smell after ride ?
Post by: sebastienb on December 26, 2012, 04:59:15 PM
Don't think it happens after filling up but I will check the hoses and tank cap :-/
Title: Re: Gas smell after ride ?
Post by: desmodoktor on December 26, 2012, 07:43:02 PM
Quote from: The Bearded Duc on December 26, 2012, 03:04:07 PM

Every now and again I'll notice a small overflow puddle under my bike once it's on its side stand, always after trying to get more fuel into the tank than it needs (slight over fill).



if i try to get more gas than she needs, (talking abt amounts that the gas cap will touch the fuel when closed) my check engine light will go on! 2012 M1100evo.
Title: Re: Gas smell after ride ?
Post by: The Bearded Duc on December 26, 2012, 10:38:38 PM
Quote from: svp88 on December 26, 2012, 07:43:02 PM
if i try to get more gas than she needs, (talking abt amounts that the gas cap will touch the fuel when closed) my check engine light will go on! 2012 M1100evo.

I haven't filled to where the cap touches so no check engine light for me. It's basically just under the cap which can be enough to spill over if the bike is on the side stand immediately after a fill up.

Quote from: sebastienb on December 26, 2012, 04:59:15 PM
Don't think it happens after filling up but I will check the hoses and tank cap :-/
Not sure how the fuel system hooks up to the "bladder" on the 796 either, but it might be a good idea to make sure everything is torqued to spec in that department too.
Title: Re: Gas smell after ride ?
Post by: cmejia1978 on December 27, 2012, 09:53:40 AM
Do you still have your emissions canister? if not and venting to the atmosphere that could be your answer. Another option is that: have toy service the motor lately ? Maybe your dealer put a little more mixture to your fuel trimmer, happend to me, too
Title: Re: Gas smell after ride ?
Post by: koko64 on December 27, 2012, 11:16:33 AM
Raw gas smell or gassy exhaust smell?
Title: Re: Gas smell after ride ?
Post by: sebastienb on December 27, 2012, 12:17:57 PM
Not raw for sure but maybe like a lean exhaust fume. And they did take my canister off on my first service, the engine was acting up and they recommended removing it. Should I have them add it back ?
Title: Re: Gas smell after ride ?
Post by: cmejia1978 on January 07, 2013, 08:46:37 PM
the fumes that were going to the canister are now going to the atmosphere, no you are not going to pollute more or less... so that could be the odor...  [coffee]
Title: Re: Gas smell after ride ?
Post by: scduc on January 08, 2013, 05:55:07 PM
You should stay away from the Mexican food :P
Title: Re: Gas smell after ride ?
Post by: wiggsmeister on January 08, 2013, 09:05:09 PM
Do you have a stock exhaust set up or is it after market?
Title: Re: Gas smell after ride ?
Post by: wiggsmeister on January 08, 2013, 09:45:35 PM
I bought my used 2011 696 with a custom exhaust (which was very poorly installed) in November last year. I smell gas even if I'm sitting at a light at idle for a few seconds. I asked the guys at the shop if it was the mixture and they said to staying within regulations they couldn't adjust it any more and that the cause of the smell is the exhaust itself.

If your setup is aftermarket that might have something to do with it, it's just hopefully not as... fragrant as mine.. :/
Title: Re: Gas smell after ride ?
Post by: Heath on January 09, 2013, 12:09:26 AM
Quote from: wiggsmeister on January 08, 2013, 09:45:35 PM
I bought my used 2011 696 with a custom exhaust (which was very poorly installed) in November last year. I smell gas even if I'm sitting at a light at idle for a few seconds. I asked the guys at the shop if it was the mixture and they said to staying within regulations they couldn't adjust it any more and that the cause of the smell is the exhaust itself.

If your setup is aftermarket that might have something to do with it, it's just hopefully not as... fragrant as mine.. :/
They couldn't adjust it because they had to stay with in regulations? regulations of what? Where are you located?
Title: Re: Gas smell after ride ?
Post by: Raux on January 09, 2013, 12:41:28 AM
you're running rich, likley.

Give us a complete break down of all the mods on the bike.
Do you have a Powercommander? Ducati Performance ECU, etc etc. What exhaust is it?
Title: Re: Gas smell after ride ?
Post by: wiggsmeister on January 09, 2013, 11:37:03 AM
Quote from: Heath on January 09, 2013, 12:09:26 AM
They couldn't adjust it because they had to stay with in regulations? regulations of what? Where are you located?

I'm in California... and in Los Angeles to make the matter worse..

there is tons a of great riding around here though, so it makes up for it.
Title: Re: Gas smell after ride ?
Post by: Raux on January 09, 2013, 12:04:45 PM
Then taking off the charcoal canister was illegal to begin with
Title: Re: Gas smell after ride ?
Post by: wiggsmeister on January 09, 2013, 04:40:32 PM
Quote from: The Bearded Duc on December 26, 2012, 03:04:07 PM
Do you fill up before coming home? Might just be a slight draining from the overflow hole at the gas cap when the bike is on the side stand.

Every now and again I'll notice a small overflow puddle under my bike once it's on its side stand, always after trying to get more fuel into the tank than it needs (slight over fill).

Should be nothing to worry about but, to be safe, check all your hoses and connections for leaks and/or cracks.

Here's a link showing my exhaust: http://www.ballerbolts.com/hco696moexun.html (http://www.ballerbolts.com/hco696moexun.html)

The install was very poorly done (don't know if the previous owner did it himself or if a shop did it), as I said before. There is a support arm that was supposed to extend from under the seat to the top of the box. This was not installed. This result led to the dividers inside the box (look closely at the third pic in the link) to fall out probably because of excessive vibration, and the exhaust actually broke off the base where it attaches to the pipe and had to be welded back on.

It backfires excessively. I told the shop (bertsmegamall.com) that it was running too rich and they said they can't adjust the mixture because of regulations. They blame the exhaust for the backfiring.

If a powercommander or performance ECU are aftermarket products for a 2011 696 then I don't have them.

Maybe this should move this to its own thread... 
Title: Re: Gas smell after ride ?
Post by: Howie on January 09, 2013, 04:48:19 PM
They are probably correct about the exhaust.  Adjustments to put a vehicle back to factory spec is not illegal.
Title: Re: Gas smell after ride ?
Post by: Heath on January 09, 2013, 11:03:15 PM
If the exhaust is poorly installed and you have a leak somewhere then it can cause the popping. That exhaust seems like it would be hard to get it tuned right.  I am in California also. If your mechanic is not willing to tune because of regulations you need to find a new one.
Title: Re: Gas smell after ride ?
Post by: subin on January 10, 2013, 03:01:16 PM
To OP, if you have the stock exhaust, you should not smell gas or strong exhaust smell while idling at the light, but if you park the bike in a closed 2 car garage after the ride, you would smell some left over exhaust.

To Wiggs, the exhaust you have should be a free flow one with no baffle in it. If there is no other mods to the airbox and ECU, then you are mostly running lean.

Bert's could not adjust the ECU and the canister due to CARB regulations. As for the backfiring (closed throttle popping), I rode a M696 with Termi slip-ons and it did that a lot. I am not sure if that bike has performance ECU in it, so I cannot say if installing the performance ECU would fix that. However, that bike also took a long time to warm up, so I would guess that it did not have the performance ECU installed. In general, the popping should reduce with a richer mixture.

There are a few independent techs around LA, I am sure you can find one who is willing to work on your bike.
Title: Re: Gas smell after ride ?
Post by: wiggsmeister on January 10, 2013, 08:52:23 PM
Subin:

Do you have any recommendations on independent and qualified techs in the LA area? There's a couple shops I know about near me (the dealer is only 3 miles away, but i don't trust those guys) but if you know of any a point in the right direction would be appreciated.
Title: Re: Gas smell after ride ?
Post by: Howie on January 10, 2013, 11:52:54 PM
How about our sponsor Valley Desmo Service?  Our very own Flounder-Administrator Speeddog will take good care of you.
Title: Re: Gas smell after ride ?
Post by: subin on January 11, 2013, 10:25:18 AM
Quote from: wiggsmeister on January 10, 2013, 08:52:23 PM
Subin:

Do you have any recommendations on independent and qualified techs in the LA area? There's a couple shops I know about near me (the dealer is only 3 miles away, but i don't trust those guys) but if you know of any a point in the right direction would be appreciated.

I have no experience with any of the shops around LA, but I keep reading good things about Valley Desmo and Motoservizio (Signal Hill) on this and other forums.

Ducati Newport Beach also has good reputation around here.