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Just checked the connector of the DITC all looks good. Still no spark, tach signal or fuel pump relay action.

Michael
I found your post because my friend is having a similar issue. I know this w ...

Very interesting, you very well could be correct, as I do not 100% know the complexities of the evap system on these cars, as itâ€™s not something that terribly sparks my interest..

But..
Shouldnâ ...

Thatâ€™s a pretty good article..
https://cnypca.org/bosch-cis-hot-start-problem/

Excellent information..

Except one thing..
Think they might be yanking your chain a bit about the gas cap.. ...

Fuel tank is cleaned and sealed with POR 15 kit. What a time consuming process! I also repainted it with truck bed liner. Tough coating and nice finish.
https://hosting.photobucket.com/images/i377/bt ...

Did you resolve your issue?

There are ten potential causes for Residual pressure to drop too quickly. Hereâ€™s the list as well a test method to rule out what might be an issue.

1) Warm-up Regulator (WUR)
Close the valve th ...

There are four small filters on the outlet of the distributor. I found replacement from k-jet specialist. There is also one big one inside. I never found a replacement so be careful not to break it ...

Sounds like you have the classis hot start issue, when the heat of the engine cause the fuel to vapor lock. Did you known that the manual states when starting a hot engine to fully depress the gas pe ...

I should of added, that if the WUR is checked and found to have both good control & system pressure, then the gas cap has to be the cause. This is in reference to the first check. Good luck with ...

Here's a procedure for determining why the cause for low residual pressure.

To distinguish between these, eliminate the possibilities one at a time by isolating the components. Begin isolating the ...

I assume the video "starting - no gas" your were measuring control pressure. correct? This is way to high of pressure to start the car as the engine is too lean. If I assume the ambient is ...

The '77 has five filters, the large metal one in the engine bay and four tiny filters on the outlet lines from the fuel distributor to the injectors. The plastic part between the tank and the pump is ...