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Old 05-30-2010, 08:00 AM   #34
raycow
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Join Date: Mar 2003
Location: San Francisco, CA USA
Posts: 2,454
Re: 283 heads on 350

Quote:
Originally Posted by cppursell View Post
can you describe more on checking and fixing my vacuum advance?
Hook up your timing light and let the engine idle. You want to see how much the timing changes when you connect and disconnect the vacuum hose. If there is no change, check to make sure you are actually getting vacuum. As a test, you can put the end of the hose in your mouth and suck on it - hard.

Ray
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