No Spark

[bradley928]

After driving my 82 928 with 95,000 miles on a hot day it would not start. the motor cranked and smelled like it was flooded. after coaxing it to run i let it idle for five minutes and drove it to the shop. car started fine after i pulled in until i let it sit for 20 minutes when it would not start again. after investigating the car has no spark. any suggestions on where to diagnose this? i was told it was the capacitor distributor box (cd) is there any way to test this theory? could it be distributor, coil, wiring problems etc... and if so what are the possibilities of failure and how do i test them. Thanks guys

[Mrmerlin]

most probable cause is the green wire that goes from the box to the distributor, at this point you can check the connectors, also check the coil wire to the dist cap remove it and verify both ends are clean and that the wire itself isnt grounding

[Danglerb]

+1 on the green wire.

Shop suggesting the CD ignition is a problem, well thats a red flag the shop doesn't know the 928, the early ignition boxes almost never fail and a bad green wire is common.

[MPDano]

Here's my write up and pics of the Green Wire Replacement too.

http://www.porsche928forums.com/viewtopic.php?f=9&t=4&p=1871&hilit=green+wire#p1871

[MPDano]

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

[bradley928]

Thanks guys replaced wire fired right up

[MPDano]

Originally Posted by bradley928

Thanks guys replaced wire fired right up

Green Wire?

[Mrmerlin]

since no other wire was suggested , i would guess that the green wire was in fact replaced, but this could also mean an ignition wire , or a ground wire or any wire for that matter, so we are left to guess?/????????

[Danglerb]

The Green Wire claims victory in the absence of all others.