I have an '86 Jag VDP that doesn’t like to start once it’s heated up. (Sometimes- it’s a Jag so it’s finicky.) Been told it could be the ignition module?
When it acts up it seems like it’s a fuel line or fuel pump problem. But the pump is definitly working. Once the car sits for a few hours it starts up.
The guy that did my suspension work rigged up a system involving a can of starter fluid in the glove box and a hose leading to the air intake at the filter. It sometimes works.