73 240z help starting

[Alan2fast]

You have the dual points distributor, which is from a automatic transmission model. Not a problem, but you need to make sure you have a condensor connected to the set of points you will use. I only can see one condensor in the photo.

I suspect the black/white wire is for the oil pressure sending unit.

The wire for the oil sender is already in place

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[beermanpete]

Great that you goot it to run. What was the problem?

 

The wiring diagram shows the black/white wire is a switch +12V feed having two branches in the engine compartment. One goes to the voltage regulator, the other goes to the thermo switch to control the EGR and for automatic models the relay that selects which set of points to use.

[Alan2fast]

The points gap was to big had to tight it up a bit and my wire to the coil were wrong so i was wrong on that any ideas on why its poping after i release the gas when reving up

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[Alan2fast]

Were is the thermo switch at what does it look like what does it do?

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[beermanpete]

It turns out the thermo-switch is in the passenger-side footwell on an assembly containing several relays and related devices. See the attached page from the service manual. A bit odd considering the wiring diagram shows it being attached to wires in the engine compartment. Anyhow, you don't realy need it unless you are required to maintain compliance with smog emission rules.

 

Thermo Switch.pdf

 

The popping is likely to be related to the tune-up adjustments. Have you done a complete tune-up? Adjust the valves, clean or replace and gap the spark plugs, set the dwell and timing, sync the carbs and idle mixture, an so on? Have you done a compression check?

[Alan2fast]

Cool thanks ill just set that aside but ill have to check ever thing else again know that its running ive got one other thing the rpm gauge does not work

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