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Joined: Jul 2009
Posts: 53
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Jul 2009
Posts: 53 |
Should the vacuum advance be connected or disconnected when setting the timing on a 235? The Chevy factory repair maunual is silent on this, so would assume it stays attached. However, I've read a couple comments from other chat rooms where guys have said to disconnect the vacuum advance (like I would typically do on an old small block V-8).
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Joined: Dec 2001
Posts: 11,162
ChatMaster - 10,000
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ChatMaster - 10,000
Joined: Dec 2001
Posts: 11,162 |
On a 235 or 216 it should not make any difference. The engine will run better if the vacuum line isn't leaking
Life's a long winding trail, love Jesus and ride a good horse!
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
It is not necessary to disconnect the vacuum line on a 6 cylinder - if the engine is at a slow idle speed. The vacuum ports in the throat of the carburetor are above the throttle plate at idle speed and do not revieve vacuum.
Gene Schneider
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