Today we’ve been getting started with my sons new (to us) 1978 280Z. It’s a California import and hasn’t been on the road in many years. After getting rid of the rancid petrol and getting some fresh fuel through, it looks like we’ve only got 6psi at the fuel rail and there’s very little compression on number 4. It struggles to hold anything other than idle. But it sounds surprisingly good otherwise
As for the fuel pressure, the filter is ok and the pump is noisy, so it’s time for a new fuel pump and stand-alone pressure regulator then we can work from there.
The compression issue is a wrinkle I didn’t need. I’m probably deluded in thinking it’s just sticking rings or valve clearances. This car has been sat for years so I think the best approach is to get the fuelling sorted, check the clearances, then try and run it and get some temperature in it before another test. Otherwise it’s time to get serious.