240Z, 260Z, 280Z Performance / Technical Discussions related to performance motor enhancements, upgrades.

New Member And Transistor Ignition Unit Question

Old 12-15-2012, 06:53 PM
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Join Date: Dec 2012
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New Member And Transistor Ignition Unit Question

Hello all,

New member with a common question. I've got a '75 280Z I'm in the process of restoring. She's always had difficulties starting, but after sitting for 11 months while I was in Afghanistan she's having a much more difficult time starting/running. I've replaced the following as part of the resto.

-Thermotime switch,Coolant temp. switch
-Cold start valve
-Fuel tank/pump

It's got good fuel pressure (and tends to flood due to the starting issue), and its getting spark although it looks a bit weak. Could it be a bad transistor ignition unit? I've read the FSM and plan on getting it tested, and I've read about the GM HEI Ign. module swap on this forum, but I'm not clear on how to go from the 7-wire TIU on my 280Z to the GM 4-wire module. I'm at a loss, I'd really like to get it on the road but the starting issue is preventing me from doing so. Once it gets running it runs like a champ, it's just getting it started that proves tough. Any help is appreciated, thanks!
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