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Petrol smell and very slight rough running in my 924S

 
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Mskeet  



Joined: 23 Jun 2018
Posts: 28
Location: Buckinghamshire

PostPosted: Fri Sep 21, 2018 2:06 am    Post subject: Petrol smell and very slight rough running in my 924S Reply with quote

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.
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1968 912
1988 924S
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KDJones2000  



Joined: 14 Sep 2010
Posts: 302
Location: Phoenix, AZ

PostPosted: Fri Sep 21, 2018 5:46 am    Post subject: Reply with quote

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.
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1987 924S SPEC car
Team Toofah Racing
1988 944 Turbo S
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Paul  



Joined: 02 Nov 2002
Posts: 9349
Location: Southeast Wisconsin

PostPosted: Sat Sep 22, 2018 10:36 am    Post subject: Reply with quote

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...
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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
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Mskeet  



Joined: 23 Jun 2018
Posts: 28
Location: Buckinghamshire

PostPosted: Wed Oct 03, 2018 10:46 am    Post subject: Solved Reply with quote

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!
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