924 Getting Spark?

[924Attempt]

Ok, so i picked up a 1981 924 from a guy recently that has been sitting for a long time and im trying to put her back on the road and then slowly restore her.

When I got the car I had compression and a good starter but the timing belt was MIA due to dry rot.

Ive replaced so far the spark plugs, wires to dist, rotor, dist cap, wire from dist to ignition coil, ignition coil, ignition module, battery. I then made an external fuel pump system and rebuilt the jetronic system, new injectors etc. I have fuel and compression, no spark, and the timing is somewhere in the ballpark ( no timing mark on crankshaft pulley so i ran cylinder 1 to tdc and put the camshaft on the timing mark then put on a belt).

So Ive hit a wall, Im colorblind so tracing wires is a no go at the moment. I dont know if the ecu is dead or even if its getting power, not sure what relay or anything powers it or if it should start without the ecu. I have a multimeter but ive never been shown how to use one so it may as well be just a hunk of plastic to me.

Can I give straight power to the ignition coil? and if so how would i go about that?

Any help would be appreciated.
(trust me i know im an idiot)

[djnolan]

Start here at Clarkes: Troubleshooting - Engine

Also check the DME relay, it has two functions, one to power the fuel pump (sounds good) and the other to power the DME that controls you spark/injector firing. A bypass jumper can be made.

Do you have fuel pressure or actual injector firing?

You can't give straight power to the coil, the DME controls by pulsing it on/off. However one of the coil wires goes to batt positive constant voltage, the other to pulsing DME. You could check the batt positive wire for 12 volts with your multimeter.

First try Clarkes procedure...

[DannoXYZ]

This is 1981 924, completely before the 944. Not same as 1987-88 924S which was 944 with narrow-body. No DME or DME relay.

Several steps to troubleshooting TCI-H system:

1. check all connectors and fuses at relay-board, especially A12 fuse, measure its resistance, don't just eyeball it.
2. inspect distributor rotor and cap-terminals for wear and extra clearance
3. measure ignition coil primary's resistance
4. measure ignition coil secondary resistance
5. measure resistance of plug-wires
5. measure resistance of wire between coil and distributor

7. key ON, measure voltage between ignition-coil terminal-15 and ground
8. key ON, measure voltage between ignition-coil terminal-1 and ground
9. when cranking, measure voltage between ignition-coil terminal-15 and ground
10. when cranking, measure voltage between ignition-coil terminal-1 and ground

11. check flywheel-sensor's signal with oscilloscope. This is a strange combo sensor and unfortunately no longer available on market if it's bad.