Need help with my zz502

[L78_Nova]

When it is hot and it "won't start" is it cranking over at normal speed or hard cranking?

Had a similar issue with freshly powder coated engine mounts frame etc. Would fire cold but not hot (cranked very slow). Poor ground through the coating. I added a ground cable from the block to frame and all is well.

[drdave69]

I'm not sure how to 'hot wire' it to the battery. Will it still start/stop using the keyed ignition switch if I run a wire to the + at battery and 12v side of the HEI? I still have the original tach in the car and the EFI has a control/monitoring module that has a multitude of 'gauges' including a tach. The wire in the HEI is part of the EFI harness.

When the engine is hot it will turn over just fine, it just takes time to fire. I usually open the throttle (1/2 - full pedal) to get it started.

[earntaz]

Originally Posted by drdave69

I'm not sure how to 'hot wire' it to the battery. Will it still start/stop using the keyed ignition switch if I run a wire to the + at battery and 12v side of the HEI? I still have the original tach in the car and the EFI has a control/monitoring module that has a multitude of 'gauges' including a tach. The wire in the HEI is part of the EFI harness.

When the engine is hot it will turn over just fine, it just takes time to fire. I usually open the throttle (1/2 - full pedal) to get it started.

Dave -- use a female spade terminal with at least 14 gauge wire. Spade terminal will plug into IGN terminal on side of HEI cap and other end to batt 12V + source. Next to the IGN terminal on side HEI cap is the TACH terminal. With this setup -- the engine is "hot wired". Turn key to fire it off -- to shut the engine off, you will need to disconnect the the IGN wire that you ran to the 12V source at battery ...

[drdave69]

Thanks. That is what I thought. I'll try that next time I monkey with it.