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-   -   Cold Start Problem 74 911S 2.7 (http://forums.pelicanparts.com/porsche-911-technical-forum/243514-cold-start-problem-74-911s-2-7-a.html)

IXLOR8 09-29-2005 04:23 AM

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

KNS 09-29-2005 04:47 AM

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.

kach22i 09-29-2005 04:52 AM

Re: Cold Start Problem 74 911S 2.7
 
Quote:

Originally posted by IXLOR8
cold start valve?
My 1977 2.7L does, or at least a shop who worked on it blew air through it, and said it was fine. I still have starting issues - hey it's an old car.;)

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.

LakeCleElum 09-29-2005 05:03 AM

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.....

IXLOR8 09-29-2005 03:14 PM

Cold Start valve/warm up regulator
 
Quote:

Originally posted by LakeCleElum
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.....
Is the throttle lever link to the Cold Start valve/warm up regulator? Maybe I have not played around with different starting positions.

Thanks for the replys.

Jim Sims 09-29-2005 03:24 PM

Read down aways into the below thread to the info about 1974.

http://forums.pelicanparts.com/showthread.php?s=&threadid=105610&highlight=micros witch+AND+1974

PorschePilot 09-29-2005 05:43 PM

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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