 Distro vacuum hose capped off.., Why? |
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| Rod |
 Aug 19 2009, 04:33 AM
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#1
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Senior Member  Group: Members Posts: 616 Joined: 1-January 08 From: Farnham UK Member No.: 8,526 Region Association: England  |
On my 1.7l one of the distributors vacuum hoses is disconnected and a bolt chucked in the end, why would this be? My mechanic servicing it has just spotted this and said that it would be giving me zero advance, so wants to obviously reconnect as per standard.
Any ideas why this would have been done by the PO?? |
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| ClayPerrine |
Aug 19 2009, 07:13 AM
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#2
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Life's been good to me so far..... Group: Admin Posts: 15,454 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille 
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QUOTE(Rod @ Aug 19 2009, 05:33 AM)  On my 1.7l one of the distributors vacuum hoses is disconnected and a bolt chucked in the end, why would this be? My mechanic servicing it has just spotted this and said that it would be giving me zero advance, so wants to obviously reconnect as per standard. Any ideas why this would have been done by the PO?? A lot of 914s had the vacuum advance hose disconnected from the factory. The distributor only used the vacuum retard port. It didn't even need the hose on the vacuum advance, but a lot of mechanics would see the fitting and assume that a hose was supposed to be there. Both the vacuum advance (when needed) and the vacuum retard went to the throttle body. Do you have 2 fittings on the throttle body or just one? |
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| Rod |
Aug 19 2009, 09:11 AM
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#3
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Senior Member Group: Members Posts: 616 Joined: 1-January 08 From: Farnham UK Member No.: 8,526 Region Association: England |
QUOTE(ClayPerrine @ Aug 19 2009, 02:13 PM) QUOTE(Rod @ Aug 19 2009, 05:33 AM) On my 1.7l one of the distributors vacuum hoses is disconnected and a bolt chucked in the end, why would this be? My mechanic servicing it has just spotted this and said that it would be giving me zero advance, so wants to obviously reconnect as per standard. Any ideas why this would have been done by the PO?? A lot of 914s had the vacuum advance hose disconnected from the factory. The distributor only used the vacuum retard port. It didn't even need the hose on the vacuum advance, but a lot of mechanics would see the fitting and assume that a hose was supposed to be there. Both the vacuum advance (when needed) and the vacuum retard went to the throttle body. Do you have 2 fittings on the throttle body or just one? It has two. |
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| jmill |
Aug 19 2009, 09:38 AM
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#4
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Green Hornet Group: Members Posts: 2,449 Joined: 9-May 08 From: Racine, Wisconsin Member No.: 9,038 Region Association: Upper MidWest |
You will still get mechanical advance so his comment above zero advance is incorrect. The dizzy is vacu-mechanical.
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| blitZ |
Aug 19 2009, 10:00 AM
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#5
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Beer please... Group: Members Posts: 2,223 Joined: 31-August 05 From: Lawrenceville, GA Member No.: 4,719 Region Association: South East States |
If the retard side is plugged the advance may not move as freely as it should. I have a two sided port vacuum pot and the retard side is open.
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| SirAndy |
Aug 19 2009, 11:33 AM
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#6
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Resident German Group: Admin Posts: 41,633 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
QUOTE(blitZ @ Aug 19 2009, 08:00 AM) I have a two sided port vacuum pot and the retard side is open. (IMG:style_emoticons/default/agree.gif) That's how they came from the factory. Unplug it and leave the hose open and tugged away under the air filter. (IMG:style_emoticons/default/shades.gif) Andy |
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| Rod |
Aug 19 2009, 11:35 AM
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#7
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Senior Member Group: Members Posts: 616 Joined: 1-January 08 From: Farnham UK Member No.: 8,526 Region Association: England |
So if the car were yours what would you do? So far I have three options..
Leave it capped Remove the cap and leave it open Reconnect it Which should it be?? I don't want him to f'u' my car.. He said that when he reconnected it, he had to reset the timing.... |
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| SirAndy |
Aug 19 2009, 11:46 AM
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#8
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Resident German Group: Admin Posts: 41,633 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
QUOTE(Rod @ Aug 19 2009, 09:35 AM) Which should it be?? It was never meant to be connected to anything, nor was it meant to be plugged, so i would go with the factory option of "Remove the cap and leave it open" ... (IMG:style_emoticons/default/shades.gif) Andy PS: Whatever you do, you should set your timing anyways. |
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| McMark |
Aug 19 2009, 11:46 AM
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#9
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
QUOTE So if the car were yours what would you do? If it were my car, factory motor = factory setup. Check your engine number, match that with what FI you have and then look up the vacuum hose diagram and follow it. You're not going to magically gain something by plugging in something that shouldn't be. In fact, you could over-advance and ping your motor to death. |
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| SLITS |
Aug 19 2009, 01:15 PM
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#10
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None  |
The only time you're going to get vacuum advance is when the motor is pulling good vacuum ... (now there's a brainstorm)
1.) Cruise @ steady throttle (gas mileage) 2.) Deacceleration with closed throttle (emissions control supposedly) All the advance you need for rapid (IMG:style_emoticons/default/lol2.gif) acceleration is mechanical ... |
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| Rod |
Aug 20 2009, 04:29 AM
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#11
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Senior Member Group: Members Posts: 616 Joined: 1-January 08 From: Farnham UK Member No.: 8,526 Region Association: England |
QUOTE(McMark @ Aug 19 2009, 06:46 PM) QUOTE So if the car were yours what would you do? If it were my car, factory motor = factory setup. Check your engine number, match that with what FI you have and then look up the vacuum hose diagram and follow it. You're not going to magically gain something by plugging in something that shouldn't be. In fact, you could over-advance and ping your motor to death. Ok so going by factory settings it should be connected - as per this diagram? The later 2.0 models had only one hose connected.. http://www.pelicanparts.com/914/technical_...el_diagrams.htm (IMG:http://www.pelicanparts.com/914/technical_specs/17VACHOSE.GIF) If the above is right - this is the way it has now been connected up and timing re-set (IMG:style_emoticons/default/smile.gif) |
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