Slant dies when cruising.....

clementine said

One of those A body from Chrysler.....Ha Ha ...Im just kidding....72 duster. It seems like the collapsed screen thing would take a second to develope.

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Merely a suggestion. If it's collapsing it may be getting worse as to affect you now at lower RPM's ? Check fuel pressure or remove line at carb. and pump into jug with someone cranking it over.