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kike924 · Posted: Wed Oct 06, 2004 2:55 am Post subject: erratic cold starting???

Dear friends:
My beauty has developed an annoying issue, in the morning when I start her she doesn´t want to (not always), I have to press the accelerator to make her come alive.

The rest of the day she starts instantly even after being parked for 8 hours at my workplace parking lot.

Your suggestions are welcome....

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Euro 924 1980 N/A
Daily driver + week end racer

kye · Posted: Wed Oct 06, 2004 10:45 am Post subject:

I had tremendous cold starting issues, and it turned out to be running very lean, and when it was cold it was having trouble getting enough fuel.

a good sign of that being the case will be that it'll start when you first turn it over, but if you run it for 20 seconds and stall it, you won't be able to start it again. that's because it started with the help of the cold start valve, but won't re-start (or will be reluctant) when the cold start isn't part of the picture (which it won't be after 8 seconds of having the engine turning over or running) and the thermo time switch has diabled the cold start valve.

otherwise, perhaps check to see if you have good spark?
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it's funny, but when they said "Anything is Possible", that's exactly what they meant....

Lizard · Posted: Wed Oct 06, 2004 4:16 pm Post subject:

turn the key into on position, then to lock position, and repeat 10x w/o turning to the start position, once completed on the 10th time try to start, if it fires up you are loosing system pressure slowely. possible a bad fuel accumulator
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3 928s,

Chrenan · Joined: 15 Jan 2003 Posts: 3903 Location: Canada

Lizard has a point. After I replaced my fuel accumulator, check valve and injectors my starting problems (both hot and cold) stopped. These are the parts that can contribute to a loss in fuel pressure after shut-down.
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1987 951 - M193 Version for Japan

kike924 · Posted: Fri Oct 08, 2004 7:54 am Post subject:

Thank you guys!!!!

I've already bought a new fuel accumulator (Bosch) and I´m planning to have it installed ASAP
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Euro 924 1980 N/A
Daily driver + week end racer

macBdog · Posted: Fri Oct 08, 2004 9:43 am Post subject:

Just for the sake of good information:

I didnt have any cold start problems when my fuel accumulator was leaking badly, replaced it and still no cold start problems. So the accum is not the be all and end all or fuel pressure probs although nice to replace...
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1979 931 with a 350 chev
1973 911E with EFI

Paul · Posted: Fri Oct 08, 2004 1:23 pm Post subject:

Check the cold start valve for proper operation.