Rochester tuning question time

[Racin_jason]

Recently I bought a 81 with a 350 topped by a Rochester M4ME carb..

Before you just jump on the replace it with an Edelbrock train, you'll have to know I'm just in the process of getting this truck running and would like to (for the time being) keep things the way they are.

..After diagnosing a few vacuum issues i was able to get the truck to a good driving position.

BUT! When I stick my foot to the floor I experience a drastic loss of power and hesitation. The guy that I bought the truck from said that he was experiencing the same problem when he put the truck away last fall and he was told that the choke was the issue. When I took the truck out this morning after replacing said vacuum lines with the choke propped open it was still an issue. Any thoughts on resolving this issue?


Also, this morning when after i replaced the vac lines I attempted to connect a vacuum gauge and fiddle with the air/fuel mix. The gauge that i had wouldn't read any vacuum unless i was to blip the throttle.. possible a faulty vacuum gauge or something else? Any thoughts here?

With the weather becoming warmer and such i've been working to get this thing on the road so i can enjoy it, hopefully i can gain a little insight in to these problem,

thanks folks, you rock!