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Mskeet
Joined: 23 Jun 2018 Posts: 36 Location: Buckinghamshire
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Posted: Fri Sep 21, 2018 1:06 am Post subject: Petrol smell and very slight rough running in my 924S |
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Hi,
I am running a Euro spec 1988 924S. Just lately I have noticed that when I accelerate hard as I come of the pedal their is a strong smell of petrol in the cabin. The car also does not have the smooth growling roar it had as you accelerate but a slight, regular bu, bu, bu, bu sound over the top of the roar as you push harder.
They idle is still the same at neutral, power is the same, but fuel economy is down.
No obvious leaking of petrol anywhere.
Any ideas? Any help gratefully received. _________________ Lover of all things Porsche
1968 912
1988 924S |
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KDJones2000
Joined: 14 Sep 2010 Posts: 322 Location: Phoenix, AZ
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Posted: Fri Sep 21, 2018 4:46 am Post subject: |
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It could be that your FPR or Fuel Damper is leaking, drawing fuel into the vacuum system.
Smell for fuel in your vacuum lines, and replace them if you suspect they are failing. _________________ 1987 924S SPEC car
Team Toofah Racing
1988 944 Turbo S |
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Paul
Joined: 02 Nov 2002 Posts: 9491 Location: Southeast Wisconsin
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Posted: Sat Sep 22, 2018 9:36 am Post subject: |
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Another way to test the FPR and FD is to pull the vacuum hoses while the car is idling and see if they dribble fuel. Be ready to catch the fuel... _________________ White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy. |
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Mskeet
Joined: 23 Jun 2018 Posts: 36 Location: Buckinghamshire
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Posted: Wed Oct 03, 2018 9:46 am Post subject: Solved |
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Started going though the problem and pulled the main lead from the coil and the end was corroded. It was a minor misfire and erratic spark. New lead and all is well. Lucky it was not the expensive bits! _________________ Lover of all things Porsche
1968 912
1988 924S |
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ConradK
Joined: 24 Feb 2019 Posts: 2 Location: Austin
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Posted: Thu May 23, 2019 2:30 am Post subject: |
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The aftermarket distributor caps suck and pop off and visually look fine but when you wiggle the cap its obvious. _________________ 88 924S |
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