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First Porsche
Hello all, I picked up my first Porsche last Saturday in MD. 1983 911SC, 72K miles in great condition and all original. Previous owner had her for 12 years, very particular and really babied her. Test drive was great, started up cold no issue. Put car on the trailer an hour later started no issue. 8 hours back to NC, started up, took her out for a few miles and into the garage. Went to start the car this evening, started up but then died about 30 seconds in. When trying to restart she would try but almost seemed fuel starved. Gas gauge indicates 3/4 full, added gas anyway, same result. After waiting a bit tried again and she won’t even try to fire now. I plan to try a shot of ether tomorrow just to eliminate any serious ignition issue. It seems like a fuel issue to me, just hoping for some common known issues to check first.
Update, gave it a shot of carb cleaner today and it tried to fire so ignition doesn’t seem to be the issue. Plan on checking fuel pump fuse next then see if I have fuel at the injection pump. Thanks all for any help |
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06-06-2025, 08:51 AM
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Congratulations and welcome… I bought my first two years ago and it’s also an ‘83 SC.
I haven’t had a no start issue but have read plenty about all the various potential issues here. There is a very recent thread with another member having some issues with an ‘83 that might give you some potential leads: https://forums.pelicanparts.com/porsche-911-technical-forum/1178275-83-sc-died-me-today.html |
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06-06-2025, 10:53 AM
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PCA Member since 1988
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Your troubleshooting plan looks good. Starting spray in the intake is one of the best first tricks you can try. It quickly prunes the troubleshooting tree. Another is to check fuses.
Next step: remove the air cleaner and turn on the ignition. Push up on the air metering arm briefly. You should hear the injectors "squeal." If no squeal, then the pump is not working. Then check for voltage to the pump relay and pump circuit.
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1973.5 911T with RoW 1980 SC CIS stroked to 3.2, 10:1 Mahle Sport p/c's, TBC exhaust ports, M1 cams, SSI's. RSR bushings & adj spring plates, Koni Sports, 21/26mm T-bars, stock swaybars, 16x7 Fuchs w Michelin Pilot Sport A/S 3+, 205/55-16 at all 4 corners. Cars are for driving. If you want art, get something you can hang on the wall! |
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06-06-2025, 01:21 PM
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UPDATE: Fuse for fuel pump was blown. Put in a replacement and she started right up. Fuse did get hot to the touch after a few minutes but no smoking etc. I realize I need to go ahead and check fuel pump draw to make sure that’s not an issue. I would not be surprised though if this is the original fuse from 1983, everything else on this car seems to be. I realize though that’s not a necessarily a good thing. Thanks for all the help, and I’ll be back I’m sure.*
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06-07-2025, 06:01 PM
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PCA Member since 1988
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If you don't know when the fuses were last replaced, then replace all of them now. Fuses do "wear out" due to thermal stress cycles. The tiny strip eventually gets distorted and cracked.
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1973.5 911T with RoW 1980 SC CIS stroked to 3.2, 10:1 Mahle Sport p/c's, TBC exhaust ports, M1 cams, SSI's. RSR bushings & adj spring plates, Koni Sports, 21/26mm T-bars, stock swaybars, 16x7 Fuchs w Michelin Pilot Sport A/S 3+, 205/55-16 at all 4 corners. Cars are for driving. If you want art, get something you can hang on the wall! |
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06-07-2025, 11:02 PM
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1983 911 SC
