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YOUR RESEARCHGas Smell through Air Vent in 2002 Boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Leading reported evidence
Check fuel sender unit
Suggestion or failed attempt
No successful repair reported for this finding.
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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Suggestion · Original poster
I looked at some previous posts and took out the battery to check the fuel sender unit.
Gas Smell through Air Vent in 2002 Boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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Leading evidence: 'Check fuel sender unit' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check fuel sender unit' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
Also how did you clean the gas leaks next to the sender unit ?
Gas Smell through Air Vent in 2002 Boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Clean lid and all the surroundings as much as possible
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
Before removing the external lock (collar), just try to clean the lid and all the surroundings as much as possible to avoid getting dirt inside the fuel tank.
Gas Smell through Air Vent in 2002 Boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Replace unit without draining
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
When you replaced the fuel sender unit, did you have the drain all of the gas or did you just drive the car to close to an empty tank and replaced the unit without draining?
Gas Smell through Air Vent in 2002 Boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Replace whole unit or just the o-ring
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
Do you guys think I should replace the whole unit or just the O-ring?
Gas Smell through Air Vent in 2002 Boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Clean lid and all the surroundings as much as possible
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
Before removing the external lock (collar), just try to clean the lid and all the surroundings as much as possible to avoid getting dirt inside the fuel tank.
Gas Smell through Air Vent in 2002 Boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Replace unit without draining
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
When you replaced the fuel sender unit, did you have the drain all of the gas or did you just drive the car to close to an empty tank and replaced the unit without draining?
Gas Smell through Air Vent in 2002 Boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Run car a little longer
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
I did Not have to drain the tank, I just run the car a little longer after the fuel light came on (perhaps half reserve) and then was able to remove the collar without spilling fuel everywhere (guess how I learned about this tip..
Gas Smell through Air Vent in 2002 Boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Coverage and how to read this overview
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
4 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
986Forum: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
1 acknowledgements have no verified action link; they do not establish a repair result.
Outcome without a verified action link
unfortunately didn't work out, so I bought a new fuel pump assembly.
I have recently picked up a 2002 Boxster. I have noticed that there are gas smell coming into the cabin through the air vent. I looked at some previous posts and took out the battery to check the fuel sender unit. With the battery tray remove, I see gas all over the cap that keeps the fuel sender unit in place. See Picture
. Do you guys think I should replace the whole unit or just the O-ring? For anyone who has gone through this repair, what are some thing I should look out for? Thanks in advance!
Tony, I had exactly the same issue with my wife's 2008 Volvo S60, on which the plastic that surrounds the connector developed a crack and fuel was sipping out.. (BTW, on the S60, the fuel tank is underneath the rear seat, so you can imagine the smell..)
The cracked plastic cover was a part of the fuel pump, therefore I ordered a new FP and a the large O-ring that sits between the bottom of the plastic cover and the fuel tank.
I would suggest you to lube the large O-ring with silicone grease so when you are tightening the collar you don't squeeze the O-ring.
Note: Before you loose the collar, I would suggest first to blow compressed air and properly clean everything! Otherwise you will be dropping dirt and grime inside the fuel tank..
Hi Gilles,
When you replaced the fuel sender unit, did you have the drain all of the gas or did you just drive the car to close to an empty tank and replaced the unit without draining? Also how did you clean the gas leaks next to the sender unit ? I find it quite hard to just wipe it off, it still smells really bad when I cleaned it with just degreaser and towel.
Thanks
Hello Tony, I first tried to fix the fuel leak on the cracked base of the connector with epoxy.. unfortunately didn't work out, so I bought a new fuel pump assembly.
I did Not have to drain the tank, I just run the car a little longer after the fuel light came on (perhaps half reserve) and then was able to remove the collar without spilling fuel everywhere (guess how I learned about this tip.. LOL). Before removing the external lock (collar), just try to clean the lid and all the surroundings as much as possible to avoid getting dirt inside the fuel tank.
As long as you are in the reserve and clean the lid you should be ok, one more thing, "mark" the position of the lid on the tank as this will ensure that you have an accurate reading afterwards, not sure about the Boxter, but on the Volvo the lid is not keyed (you can install it ant any position) and the fuel level reading was not accurate, therefore I had to do it again..
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