Possible fuel pump diaphram failure has started. Issues will be at higher speeds with lower RPM's OK and then it gets worse and worse.
You will find pieces of your diaphram in the downstream filter.
Today's ethanol will kill yesterday's fuel pumps.
Didn't think of the fuel pump.
It is a new fuel pump with less than 1.5k miles, but a vintage one. I try to avoid stations with Ethanol for the very reasons mentioned, but cannot be positive I have not run any through.
If it is a pending failure, I should see some evidence in the filter at the carb, correct?
And you are correct, it was at highway speeds at lower RPM's when it started.
68' Firebird 400 convertible, numbers matching, solar red w/ deluxe parchment interior. 66' Pontiac Ventura Hardtop 66' Pontiac Catalina Convertible
