924Board.org

tennster · Joined: 23 Jul 2005 Posts: 18 Location: bkk, Thailand

well.. i just can't shake it off. i got heavy fuel smell in my car especially when conering. i rebuild the fuel tank, change some old fuel line and tube but still no luck. my car is getting a full repaint atm, so it might be a good time to try to fix it again.. any idea?
cheers
tenn
_________________
924 Carrera GT
no.283

924RACR · Posted: Tue Nov 14, 2006 12:27 am Post subject:

Typically these smells come up from loose hose clamps or rotted hose back at the fuel tank; sounds like maybe you have already replaced some of these? Make sure also that even the large filler tube hose clamps are tight. This is mentioned in the Tech FAQ, maybe you've already looked there.

Another issue can be leaks from outside into the back of the hatch; since you're painting your car, no doubt you are planning on using a new seal for the hatch? This, along with making sure the latch pins are snug (but not overtight) should help too.
_________________
Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype

emoore924 · Joined: 13 Apr 2004 Posts: 2822

Sometimes those fuel lines with the cloth braid on the outside can have the tube underneath crack. On the outside the braid looks fine but the tubing is crunchy trash. I think there are several lines on the top of the tank that use that cloth-braided tubing stuff (conveniently wedged between the top of the tank and the underside of the bodywork where you can't see or reach unless you drop the tank

) so if you've not checked there, it is a suggestion.

462avi · Posted: Fri Nov 17, 2006 1:23 pm Post subject:

I have seen on a previous 924 I had that the fuel sending unit gasket rotted. Whenever I would fill up or do some hard cornering it would vent into the cabin and I would get a real big blast of fuel vapor. Just a thought.

Geoff
_________________
2005 C230K
2002 grand cherokee with 4.7L

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

Not fixable, man. Just sell the car to me.
_________________
Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3

Vince Ponz · Joined: 02 Nov 2002 Posts: 3581 Location: Florida

You might be having exhaust fumes coming in through the tail lights or the hatch. Spray some water at the tail lights and around the hatch and if it enters the cabin that is your problem.
Also, stop eating beans.
_________________
"Never let them see you sweat"
77.5 924 modified track car
79 931 Euro stock
88 924S SE
87 911 Targa stock

938GTNick · Joined: 16 Nov 2006 Posts: 10 Location: UK

Looking back through the history file for my CGT, over the last 20 years there have been a number of attempts to cure this problem.

I don't have any issue with this now. I'm not entirely sure what's fixed it, but try the following:

1) As already mentioned, first adjust the hatch pins/check seal.
2) My fuel tank breather pipe now exits under the car, near the towing hook.
3) If all else fails, try fitting an additional 944 hatch seal p/n 944 512 043 00. The CGT traps more fumes etc than other 924s under it's larger spoiler. The secondary seal must have been found necessary on later 944's with their similarly sized spoilers.
_________________
924 Carrera GT
No. 434
(& No. 322)

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

What do you mean by "additional" seal? That part number is the only one I see in PET for the rear hatch. Is your car missing its hatch seal? That would explain a lot.
_________________
Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3

938GTNick · Joined: 16 Nov 2006 Posts: 10 Location: UK

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

Hmm, so how is the additional gasket fitted, do you know? I am confused yet intrigued. . .
_________________
Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3