Go Back   986 Forum - for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Boxster General Discussions

Reply
 
LinkBack Thread Tools Display Modes
Old 07-22-2013, 06:08 PM   #1
Registered User
 
dan.oneufer's Avatar
 
Join Date: Feb 2012
Location: Dillsburg, PA
Posts: 94
Garage
Fuel odor

I'm having a problem that has 2 symptoms:

The first is a strong fuel smell. It is very noticeable at traffic lights or stop signs. As I start moving, it is as though I'm driving right through a wall of fumes 2 feet ahead of me. Naturally, it is more noticeable when the roof is down.

The 2nd symptom is that I have to crank the engine for several seconds and depress the accelerator pedal to get it to fire if it has been sitting for more than half an hour or so, when it used to fire right up.

There is no CEL and the dash light does illuminate at startup, so I believe it works.

There does not seem to be any link to fuel level or refueling.

There are no obvious drops of fuel anywhere along the fuel lines, and nothing on the garage floor.

I have checked all the lines connected to the Charcoal canister and I even tried drawing air through them with a MightyVac to ensure they weren't clogged. I am not sure which ones are controlled by valves, so I don't know if that did anything good or not.

I have removed the battery tray and checked for leaks, cracks, loose cover, etc on the fuel tank. It all looks tight and dry.

Any thoughts?

__________________
2003 Boxster S Dark Teal
dan.oneufer is offline   Reply With Quote
Old 07-23-2013, 12:13 AM   #2
Registered User
 
EssexPorsche's Avatar
 
Join Date: Feb 2013
Location: Essex, England
Posts: 276
Garage
Have a look at the cap itself.
The rubber 'o' ring or gasket starts to crack up over time. This lets air in and vapor out.

If it works, its a cheap plug and play fix.
there was another thread about it somewhere which prompted me to do mine as a maintenance item. I'll see if i can find it an post it up.
__________________
Don't care......was made to care! (my Mum)
EssexPorsche is offline   Reply With Quote
Old 07-23-2013, 12:15 AM   #3
Registered User
 
EssexPorsche's Avatar
 
Join Date: Feb 2013
Location: Essex, England
Posts: 276
Garage
here you go ....

http://986forum.com/forums/general-discussions/43834-gas-cap.html
__________________
Don't care......was made to care! (my Mum)
EssexPorsche is offline   Reply With Quote
Old 07-23-2013, 03:19 AM   #4
Registered User
 
dan.oneufer's Avatar
 
Join Date: Feb 2012
Location: Dillsburg, PA
Posts: 94
Garage
Forgot to mention that I replaced the gas cap.
__________________
2003 Boxster S Dark Teal
dan.oneufer is offline   Reply With Quote
Old 07-23-2013, 04:55 AM   #5
Registered User
 
EssexPorsche's Avatar
 
Join Date: Feb 2013
Location: Essex, England
Posts: 276
Garage
http://986forum.com/forums/general-discussions/31476-gas-smell.html
__________________
Don't care......was made to care! (my Mum)
EssexPorsche is offline   Reply With Quote
Old 07-23-2013, 05:29 AM   #6
Registered User
 
Join Date: Jun 2012
Location: St. Louis
Posts: 162
Strong Fuel Smell

Sounds exactly like mine. Was a cracked fuel sending unit. Sometimes the barbs that the hose attaches into gets brittle and starts to crack. I actually could not see any visible crack in mine. Went around replacing the O-ring and tried to replace one of the fittings that attach to the barb since I was for sure it was an o-ring inside the fitting that was torn or something.

Nope. Wasn't until I replaced the fuel sending unit that it was solved.

Hope this helps! I dealt with my issue for nearly 6 months. Finally fixed it a week before I sold the car.
MConte05 is offline   Reply With Quote
Old 07-23-2013, 09:44 AM   #7
Registered User
 
dan.oneufer's Avatar
 
Join Date: Feb 2012
Location: Dillsburg, PA
Posts: 94
Garage
Thanks MConte. Seems like a likely scenario. Now the debate about whether or not to replace pump and all while I have the tank drained.
__________________
2003 Boxster S Dark Teal
dan.oneufer is offline   Reply With Quote
Old 07-23-2013, 09:46 AM   #8
Registered User
 
dan.oneufer's Avatar
 
Join Date: Feb 2012
Location: Dillsburg, PA
Posts: 94
Garage
Thanks Essex. I lookead at that one and it seemed to be related to a smell from the rear. Mine is from the front. That thread also ended at the evap system, which is why I started there.
__________________
2003 Boxster S Dark Teal
dan.oneufer is offline   Reply With Quote
Old 07-23-2013, 08:04 PM   #9
Registered User
 
Join Date: Jun 2012
Location: St. Louis
Posts: 162
The second symptom seems to be fuel pump or fuel sock related, so might not be a terrible thing to do while you are in there. It's not too hard of a job to do!
MConte05 is offline   Reply With Quote
Old 08-07-2013, 07:18 PM   #10
Registered User
 
dan.oneufer's Avatar
 
Join Date: Feb 2012
Location: Dillsburg, PA
Posts: 94
Garage
An update: I had a pro check it out and he forced smoke into the fuel system to see where it was leaking. Confirming what I heard from several people on this and other boards, there was a leak in the sending unit. I looked at that unit using a magnifier and strong light and never saw a thing.

Just goes to show what the right tools and experience can do.

Thanks for the replies.

__________________
2003 Boxster S Dark Teal
dan.oneufer is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -8. The time now is 02:31 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page