1974 1.8L FI Vacuum hoses? |
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1974 1.8L FI Vacuum hoses? |
JeffBowlsby |
Dec 10 2010, 10:21 AM
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#1
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914 Wiring Harnesses Group: Members Posts: 8,521 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None |
Which of these two diagrams is correct...the top or bottom one?
The difference is the hoses at the dizzy vacuum can...they cannot both be right. [NOTE: I deleted the incorrect diagram originally posted...the diagram remaining is the correct configuration] Attached image(s) |
dr914@autoatlanta.com |
Dec 10 2010, 11:31 AM
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#2
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914 Guru Group: Members Posts: 7,875 Joined: 3-January 07 From: atlanta georgia Member No.: 7,418 Region Association: None |
Hi Jeff I replied right away but forgot to hit the "post" button! The second diagram is the correct one. The larger front pointed toward the side vacuum advance port is connected to the front of the throttle body and the rear smaller one sticking up in the air is connected to the rear port on the throttle body sticking up into the air. After Jan 1 1974 the vacuum advance was discontinued so there was no port at the back top of the throttle body but one remained sticking up on the advance. The assembly line workers just stuck a small piece (about 2.5 inches) of 3.5 line on the port and left it breathing to the wind. There is absolutely NO REASON to plug it as it connects to nothing and does not influence the vacuum system
Which of these two diagrams is correct...the top or bottom one? The difference is the hoses at the dizzy vacuum can...they cannot both be right. |
pete000 |
Dec 21 2010, 06:55 PM
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#3
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Senior Member Group: Members Posts: 1,885 Joined: 23-August 10 From: Bradenton Florida Member No.: 12,094 Region Association: South East States |
After Jan 1 1974 the vacuum advance was discontinued so there was no port at the back top of the throttle body but one remained sticking up on the advance. The assembly line workers just stuck a small piece (about 2.5 inches) of 3.5 line on the port and left it breathing to the wind. There is absolutely NO REASON to plug it as it connects to nothing and does not influence the vacuum system. What about this statement (see above quote) from Auto Atlanta? (IMG:style_emoticons/default/popcorn[1].gif) BTW: My engine seems to run just fine with no vacuum advance hooked up???? (IMG:style_emoticons/default/huh.gif) Here is another quote from Rennlist: (IMG:style_emoticons/default/popcorn[1].gif) Attached image(s) |
zonedoubt |
Dec 22 2010, 12:45 AM
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#4
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Canadian Member Group: Members Posts: 668 Joined: 14-May 03 From: Vancouver, BC Member No.: 696 Region Association: Canada |
Probably referring to the 2.0L engine. No 1.8L in '76.
What about this statement (see above quote) from Auto Atlanta? (IMG:style_emoticons/default/popcorn[1].gif) BTW: My engine seems to run just fine with no vacuum advance hooked up???? (IMG:style_emoticons/default/huh.gif) Here is another quote from Rennlist: (IMG:style_emoticons/default/popcorn[1].gif) |
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