I have a 73 240Z with a L28 motor. I installed a new coil and the car started once. After that, the car won't start - i.e. the motor cranks but won't start. I believe I wired the coil correctly. Anyone have any suggestions? I'm new at this. Thanks.

 

Yes I have, I'm 99% sure it's getting fuel. I'm pretty sure it has something to do with the wiring of the coil and the resistor block, but I've been unable to locate a diagram in any of my manuals (i.e.. Haynes, Chilton, etc.) Thanks for the response.

 

Oh, I forgot to answer your other question - it's got 3/2 Mikuni carburetors.

 

Thanks, someone here at work tells me that I can switch the coil wires and it really won't do any damage to the coil - they also suggested that I should remove both wires, put a voltmeter on the positive wire, turn the key on, and see if I'm getting any juice.
Thanks for your comments.

 

Thanks, I got the car started but now it runs very rough - it's only running on two of the six cylinders (the two closest to the firewall). I guess I need to get a compression gauge to determine if I've blown a head gasket. Any input would be appreciated - I hope it's something smaller like a distributor cap or electronic module.

 

How long did you run it though? With all the times you tried to start it, do you think you flooded the engine? some spark plugs can go bad just from doing that for a couple days.... and with those huge carbs it won't be hard to flood it. Try removing the spark plugs (all six) and just clean them with a fine wire brush. Check the gap and put them back in. Lean down your sidedrafts a little unless you know they are all tuned and balanced perfect. Start the car and warm it up before you go any further.

 

Thank you. Last night I replaced all the plugs with new NGK. I was amazed how much oil was on the plugs that I removed. The car started right up and ran on all cylinders. Thanks for everyone's comments and helping me through this.

Paul