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Registered
Join Date: Mar 2008
Location: Houston, TX
Posts: 77
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No Spark
need help
84 Euro, twin distributor, 16V 310 hp, auto. Car has not run for approximately 6-9 months. Just going through the motions of rebuilding the fuel system, ignition, electricals, etc.....trying to rescue it from DEAD. I replaced all fuses, replaced relay that controls ignition, engine turns over, but does not fire. coils have 12 V at both sides of the 12V posts (checked with multi-meter) with ignition switch "ON". test to be performed: remove spark plug, connect to plug cable and turn over engine to see if spark arcs across plug electrodes. previous test prior to relay change revealed no spark. observation (Russ): no wires (12V) connected to twin distributor (as with earlier 16V green wire)---I understand there is a crank sensor, similar to the 32V engines, but nothing connected to the distributor at present other than coil/spark plug cables. used search but found little helpful info, not much on PET, no copy of FWM with me to research..... suggestions?   __________________
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1984 Euro 928S 310HP Stock 
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06-18-2008, 07:21 PM
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Network Native
Join Date: Jan 2007
Location: SoCal
Posts: 10,349
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Flywheel sensor? Its on the back of the engine at the top of the bellhousing.
IIRC the relay supplies a + voltage to one side of the coil and the ignition modules pull the other side to ground to make a spark. No signal or a bad one from the flywheel sensor and no spark. I'm thinking the engine actually has to turn over a full revolution for the TDC or whatever it is to be detected. |
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06-18-2008, 10:04 PM
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