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power to coil....no spark???
I am almost finished with the 2.7-3.2 install and I have power to the coil but nothing leaving the coil. Anyone have any ideas on what I should try next? I have fuel, but no spark.
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05-17-2007, 07:00 PM
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Registered
Join Date: Jun 2004
Location: Rio Rancho, New Mexico
Posts: 1,325
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Hi Kelly,
There should be a green wire connected to the #1 terminal. Nothing else. This green wire goes back to the DME Control unit, pin 1. The DME makes and breaks the green wire circuit to ground. If you connect a test wire to pin 1 of the coil, with 12 volts on pin 15 of the coil, then alternately touch the test wire to ground, you will get a spark from the coil if it's good. Make sure the DME is getting signals from the speed and reference sensor. You really need a schematic to trace all the wires. Bentley is a good source.
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DOUG '76 911S 2.7, webers, solex cams, JE pistons, '74 exhaust, 23 & 28 torsion bars, 930 calipers & rotors, Hoosiers on 8's & 9's. '85 911 Carrera, stock, just painted, Orient Red Last edited by 2.7RACER; 05-17-2007 at 08:16 PM.. |
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05-17-2007, 08:10 PM
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PRO Motorsports
Join Date: Nov 2001
Location: Burbank, CA
Posts: 4,580
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I posted a reply thinking it was still a 2.7, then realized my mistake and deleted it.
In addition to what 2.7racer posted, just check that the speed and reference sensor connectors aren't transposed. Also check that the DME has a good ground, and the connector at the DME is fully seated.
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'69 911E coupe' RSR clone-in-progress (retired 911-Spec racer) '72 911T Targa MFI 2.4E spec(Formerly "Scruffy") 2004 GT3 |
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05-17-2007, 08:41 PM
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1975 Porsche 911S 2.7
