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Registered
Join Date: May 2013
Location: ma
Posts: 1,010
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911sc spark question
Hey everyone!
I just bought a 1980 911sc it isn't getting any spark at all from the coil. I had a extra coil at my shop so I tried that and still nothing. I also checked to see if the negative and positive side was getting power on the coil and it wasn't. My question to you guys is, is it my CDI box? I checked the harness to the CDI box and its getting power on I believe prong 15 (The top middle) |
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ROW '78 911 Targa
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Green wire working?
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Join Date: May 2013
Location: ma
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Join Date: Apr 2010
Location: New Orleans, LA
Posts: 1,493
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the green wire is a coaxial wire that runs from distributor to the cd box. there are lot of threads about it which can be found with a search.
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1982 911SC, Mocal oil cooler, Bilsteins, Carrera tensioners, backdated heat, factory short shift, Seine gate shift, turbo tie rods, pop off. 2005 Mercedes-Benz C230 kompressor sport 6-speed (daily driver) |
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Registered
Join Date: May 2013
Location: ma
Posts: 1,010
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If so then yes it's getting power and the fuse for all that ( I believe fuse 22) works as well
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Join Date: Oct 2006
Location: MYR S.C.
Posts: 17,321
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the CD unit should have a hi pitched whine to it. if it does not, then it is definately bad. if it does, you have a 50/50 shot at it being good.
the trigger unit in the dist can also be bad along with the green wire fromt it to the CD. i dont know why people wont say their location. someone might see that they are close and offer help, or the use of one of my 2 spare CD units.
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86 930 94kmiles [_ ![]() 88 BMW 325is 200K+ SOLD 03 BMW 330CI 220K:: [_ ![]() 01 suburban 330K:: [_ ![]() RACE CAR:: sold |
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Quote:
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Join Date: Feb 2008
Location: Brighton. England
Posts: 106
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CDI box should 'whine', if not then it's goosed (mine was).
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'82 911 SC - Slightly modified (not nearly light enough, 1130kg on 1/4 tank !) - 964 cams 232.1 bhp |
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Registered
Join Date: May 2013
Location: ma
Posts: 1,010
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Thanks so much for your help. It was the CDI box. Put a new one in and she fired right up
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