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Registered User
Join Date: Apr 2015
Posts: 6
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911 electical?
Hi All, I have a 78 911sc with a 1980 3.0. My problem is starting cold. It takes a few minutes of turning over before it finally starts. Once its warmed up it starts with just a bump of the starter. Any ideas ?
Thanks Blair |
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03-22-2017, 09:26 AM
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Administrator
Join Date: Aug 2016
Location: Los Angeles, CA
Posts: 6,087
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Hi Blair - check out the link below to one of our DIYs, hopefully it'll help you troubleshoot the starting issue you're having. If you have anymore questions, feel free to post a Comment just below the article and we'll do our best to give you details.
Porsche 911 Starter System Troubleshooting | 911 (1965-89) - 930 Turbo (1975-89) | Pelican Parts DIY Maintenance Article -Dmitry |
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03-22-2017, 09:38 AM
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Registered User
Join Date: Apr 2015
Posts: 6
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Thanks, will try the book.
Blair |
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03-22-2017, 10:10 AM
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ROW '78 911 Targa
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Search the forum for CIS for Dummies thread. Likely a fuel system problem VS electrical.
If the starter is cranking, it isn't an electrical problem.
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Dennis Euro 1978 SC Targa, SSI's, Dansk 2/1, PMO ITBs, Electric A/C Need a New Wiring Harness? PM or e-mail me. Search for "harnesses" in the classifieds. |
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03-22-2017, 10:32 AM
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Registered
Join Date: Oct 2006
Location: MYR S.C.
Posts: 17,321
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that does not apply.
you want to look at: cold start valve (CSV) and circuit cold control pressures air leaks (making it lean for cold start)
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86 930 94kmiles [_  _] RUNNING:[__] NOT RUNNING: ____77 911S widebody: SOLD88 BMW 325is 200K+ SOLD 03 BMW 330CI 220K:: [_ _] RUNNING: [__] NOT RUNNING:01 suburban 330K:: [_ _] RUNNING: [__] NOT RUNNING:RACE CAR:: sold |
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03-22-2017, 10:34 AM
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Registered
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Check your vacuum lines
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03-22-2017, 10:48 AM
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Registered
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Check these suggestions.......
Quote:
You need a pressure gauge to troubleshoot your problem. If you don't use a pressure gauge, you will be doing a lot of guess-work and would rely heavily on luck. Tony |
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03-22-2017, 12:26 PM
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Registered
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Slow starting.......
The fuel pump has a valve on it that is supposed to hold fuel pressure. If the valve goes bad, the pressure leaks down quickly and then it takes a bit of cranking to build up enough pressure to make the fuel injectors squirt. Put a fuel pressure gauge on the engine and see how fast the pressure leaks down. Good luck!
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FEC3 1980 911SC coupe "Zeus" 3.3SS god of thunder and lightning |
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03-22-2017, 07:13 PM
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Registered
Join Date: Dec 2002
Location: So Cal and So Oregon
Posts: 2,189
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03-22-2017, 07:28 PM
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Heinz
Zeus (god of thunder and lightning)
