Years ago, I had a 74 Dodge Dart. With the 318. There was a vacuum
hose from the back of the carb to the bottom of the air cleaner. When
that hose was off, the vehicle would run awful. I'd be looking for
cracked or missing vacuum hose.
For that matter, at this age of a truck, buy a couple rolls of vacuum
hose and replace all the vacuum lines.
Please let us know what you find. So that we can learn.
Christopher A. Young
You can't shout down a troll.
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