Can't figure it out
Is the vacuum for the motor apart of the master
break cylinder? Runs rough with new tune up and
carb. Ran rough before but thought a tune up
would help it. A guy told me it was a vacuum
issue. But can't find a leak.
The engine generates a vacuum when it is running. There will be vacuum lines coming from the intake manifold. If one is loose or cracked you will have a leak which can make the engine run poorly.
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