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03-29-2018, 06:28 PM | #1 |
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Join Date: May 2010
Posts: 136
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Vacuum gauge reading with a Model B distributor
I always hook up a vacuum gauge at the start of the season as a diagnostic tool. With a model A distributor I get a range of about 16" to 20". Recently I installed a model B distributor. What numbers are normal with this set up?
tia, Ian |
03-29-2018, 07:17 PM | #2 |
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Join Date: May 2010
Location: Largo Florida
Posts: 7,225
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Re: Vacuum gauge reading with a Model B distributor
I don't see where there should be a difference. We're talking about engine condition not ignition system. The base timing is advanced more than an A, thats all.
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03-29-2018, 08:40 PM | #3 |
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Join Date: Feb 2015
Location: Lone Jack Missouri
Posts: 381
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Re: Vacuum gauge reading with a Model B distributor
I always set my distributor at the highest point of vacuum this is an FSI unit with flyweight advanced positive High Point at idle
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03-30-2018, 08:49 AM | #4 |
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Join Date: May 2010
Location: Central, IL
Posts: 3,968
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Re: Vacuum gauge reading with a Model B distributor
http://www.onallcylinders.com/wp-con...-reading-1.png
invaluable tool. Between a compression tester, leakdown tester, and a vacuum gauge you can tell everything there is to know about any engine and anytime a suspected engine issue, backfiring, overheating, or low power these 3 basic tests should be run. Easily do all 3 in less than an hour. Link is a great chart you can print off and pin to the garage wall or wrap the vacuum gauge in it. Model A has an easy access vacuum port right on the manifold so it cant get any easier.
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03-30-2018, 11:10 AM | #5 |
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Join Date: Aug 2011
Location: Battle Ground WA
Posts: 293
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Re: Vacuum gauge reading with a Model B distributor
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03-30-2018, 03:18 PM | #6 |
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Location: SW Idaho
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Re: Vacuum gauge reading with a Model B distributor
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I commend your use of the vacuum gauge though. |
03-31-2018, 04:12 AM | #7 |
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Join Date: Feb 2015
Location: Lone Jack Missouri
Posts: 381
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Re: Vacuum gauge reading with a Model B distributor
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03-31-2018, 07:05 AM | #8 | |
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Join Date: Aug 2011
Location: Battle Ground WA
Posts: 293
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Re: Vacuum gauge reading with a Model B distributor
Quote:
Being a Jr member here does not imply one is new to As or mechanics, only that one tends to not post much. |
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