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Join Date: Sep 2005
Posts: 335
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Cold Start Problem 74 911S 2.7
The car takes a few times cranking to start the car when cold. The throttle level is raise a little bit. The runs very well after it get going.
What might be the problem? Does it have a cold start valve? Does it have a thermo timer during start? 1974 911 S 2.7 |
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09-29-2005, 04:23 AM
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Join Date: Jan 2004
Location: Docking Bay 94
Posts: 7,024
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Your car does have a cold start valve and a thermo time switch. It could be something else but I had a similar problem. The wire from my starter to the cold start valve was incorrectly wired. Very difficult to start but ran fine once started. You may also have a problem with you Warm Up Regulater. You need to start by checking you system pressures. You need a CIS fuel system pressure tester to start with.
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Kurt |
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09-29-2005, 04:47 AM
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Re: Cold Start Problem 74 911S 2.7
Quote:
 Pedal to the floor (or not), turn key - lift up gas half way, pump like mad once it starts coughing......................like living with a disability but gets going every time.  You could do a search on this, many people have fixed theirs, I'm just lazy I guess.
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1977 911S Targa 2.7L (CIS) Silver/Black 2012 Infiniti G37X Coupe (AWD) 3.7L Black on Black 1989 modified Scat II HP Hovercraft George, Architect |
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09-29-2005, 04:52 AM
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Join Date: May 2004
Location: Lake Cle Elum - Eastern WA.
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Before tearing into it......Trying cranking with the throttle lever all the way up....You don't trigger the micro-switch for the Cold Start valve/warm up regulator until then.....
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Bob S. 73.5 911T 1969 911T Coo' pay (one owner) 1960 Mercedes 190SL 1962 XKE Roadster (sold) - 13 motorcycles |
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09-29-2005, 05:03 AM
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Cold Start valve/warm up regulator
Quote:
Thanks for the replys. |
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09-29-2005, 03:14 PM
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Location: Los Alamos, NM, USA
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09-29-2005, 03:24 PM
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Join Date: Feb 2003
Location: Petaluma - San Francisco Area
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Are you using the Hand Throttle? You shouldn't have to pump the pedal if it's adjusted right. When the Hand Throttle is all the way up it should close the micro-switch for the cold start circuit.
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PorschePilot 74 911S Targa - High Quality 2.7 Rebuild and Full Body Restoration MID9 Member Beechcraft V-Tail Bonanza (Fly'n high and low) |
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09-29-2005, 05:43 PM
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1977 Porsche 911S 2.7L
