924Board.org

BionicBalls · Joined: 05 Jan 2009 Posts: 642 Location: Charlotte, NC

My 924 Na has a cold running problem. It starts great everytime and idles perfectly. It pops and lacks power at mid throttle until it warms up. If I go full throttle, it will clear up and pull hard. It doesn't feel like it's pulling at full strength even when warm or at full throttle.

My fuel Pressures:

System: 70 psi
Control: 50 psi (warm)
Control: 17 psi @ 60 F

I've sold the car, but I want to get this thing figured out before I give it to the kid.

Any ideas?
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1980 924 NA
1982 931

joemac · Joined: 22 Apr 2013 Posts: 44 Location: SE Pa.

Do you know when the valve adjustment was last checked?
Plugs, cap, rotor, wires?
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Race car: my favourite palindrome.
Porsche: my favourite race car.

Ozzie · Posted: Tue May 07, 2013 9:02 pm Post subject:

I had this and it was running a fraction too lean.
Gave it (air/fuel mix) a 1/4 turn clockwise and sorted it out.
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Porsche 924 1984 (UK import) NA
Its AUTO and its BLACK
Montego Black on black/red
Engineer of Electro/Mechanical Systems Maintenance

BionicBalls · Joined: 05 Jan 2009 Posts: 642 Location: Charlotte, NC

Head was just rebuilt, Rechecked valves 1.5 weeks ago. Plugs, wires, cap, and rotor were changed at the same time.

I've been trying to richen it slightly everyday to see if it will run better. Maybe I'm just not all the way there yet.
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1980 924 NA
1982 931