924Board.org

91rocco · Joined: 20 Mar 2007 Posts: 10 Location: nottingham,uk

Hi im new to this site so go easy on me,I have recently bought a 1979 924 and I have a story to tell,The ca had been stood for some time and needed a fuel pump so one was fitted,Now heres the small problem,When starting the car from cold it fires and splutters starts very rough,sounds flooded to me,After a few minuites it runs fine really nice!!,Leave it for half an hour and then the problems arise again,takes ages to start,starter slow then quick then stops,again sounds flooded,eventually starts rough after few minuites ticking over fine again!!!
any ideas would help,checked cold start valve seems ok???

Thanks James

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

If it is flooding while sitting hot:

Remove an injector after shutoff and see if it is dribbling gas. If yes, replace all 4 (they're cheap).

Welcome, and good luck.
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Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3

Druman · Joined: 19 Mar 2007 Posts: 419 Location: Middleport, Ohio

Hmm, sounds like you might have some sort of electical problem as well (starter is slow then fast), Check your battery terminals and grounds, a car that old could build up a lot of corrosion over the years. Hope this helps.

7osh
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87' 924S non-sunroof (Red) 45K miles
85' 944 "early" NA (Red) 130K miles

PORSCHE pisses excellence...

bruce76-924 · Joined: 22 Feb 2007 Posts: 105 Location: Bradford, England

James,

If you get real stuck and you can drive the car, you're welcome to call up and see me, I'm only in Bradford so probably about an hour and half from you.

Good luck, Bruce.
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1976 924 LHD, full cage, semi tube chassis, 951 brakes, lightweight 951 body panels.
1.8t engine conversion with Holset turbo and 6 speed Audi gearbox.

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

Also pull & inspect plugs for rust. Khal's car was behaving the same after he blew his head gasket. . .
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Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3

Paul · Posted: Thu Mar 22, 2007 9:22 am Post subject:

Khal must have found a girl friend....
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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
Porsche: It's not driving, it's therapy.

D Hook · Joined: 02 Nov 2002 Posts: 3158 Location: Omaha, NE

Not if he's still blowing his own head gasket.

Well, that's no help to the original poster I guess. Sorry.

Welcome to the board.

Check your grounds. Clean 'em.

Check for dribble at the injectors as someone else has suggested already.

Good luck. Let us know what happens.
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'80 924 n/a SOLD

91rocco · Joined: 20 Mar 2007 Posts: 10 Location: nottingham,uk

Thanks guys,I will have a look at the weekend,call me stupid but when you flick the high beam lever when the lights are off should the headlamps pop up and flash,When i pull the lever i here a relay click but nothing happens?????

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

Don't think they work that way.
_________________
Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3

Druman · Joined: 19 Mar 2007 Posts: 419 Location: Middleport, Ohio

No, they don't pop up and flash, they just stay down and flash. yeah I had the same curiosity.

7osh
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87' 924S non-sunroof (Red) 45K miles
85' 944 "early" NA (Red) 130K miles

PORSCHE pisses excellence...

Mike924 · Joined: 12 Aug 2004 Posts: 2601 Location: IoW UK

Nobbi · Joined: 24 Aug 2006 Posts: 1396 Location: Germany

Hello,

i am dealing right now with the same problem.I found that one of the threats for the sparkplug is bad and the plug is not sealing the cylinder when engine is cold ! So, i gonna buy a helicoil insert retap the coil and the problem should be gone.

Good Hunting,

Nobbi

Ozzie · Posted: Sat Mar 24, 2007 7:05 am Post subject:

Mike924 · Joined: 12 Aug 2004 Posts: 2601 Location: IoW UK

No. The thermo-time switch has two terminals. One is the switch contact for the CSV, the other is for a heater circuit within the the thermo-time switch.

The idea is that, when you crank, the heater warms up a bi-metallic strip in the thermo-time switch and, after 'eight' seconds, the bi-metallic strip flips and cuts of the juice to the CSV to limit the amount of neat fuel being thrown into the cylinders.
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1985 Porsche 924 'Lux', Kalahari Beige (my ex)
1993 Porsche 968 Coupe, Midnight Blue, 6 spd

'There is no substitute for a little grease under your fingernails.' - Chrenan, 924board.org

Ozzie · Posted: Mon Mar 26, 2007 6:51 pm Post subject: