'75 1.8L Idling at 1,600 RPM -, Vacuum advance on distributor connected and... |
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'75 1.8L Idling at 1,600 RPM -, Vacuum advance on distributor connected and... |
Rick986 |
Sep 17 2021, 04:35 PM
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#1
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0-60 in 14 seconds! Group: Members Posts: 141 Joined: 31-August 21 From: NE Ohio Member No.: 25,869 Region Association: Upper MidWest |
Had the car in for a post PI today and tech noted that the "vacuum advance" on distributor was not connected when the (previously bad) charcoal canister was removed. He teed into another vacuum line and connected the vacuum port. He noted that this will increase RPM's but will also help with acceleration.
I did notice a slight increase in acceleration but more so, the car is now idling at 1,600 RPM when warm. Seems excessive. Plus, I think that I noticed that the exhaust no longer "pops" when decelerating (which was kinda cool...yet slightly obnoxious). Thoughts? Thanks for educating this Newbie... |
wonkipop |
Sep 19 2021, 03:51 PM
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#2
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Advanced Member Group: Members Posts: 4,403 Joined: 6-May 20 From: north antarctica Member No.: 24,231 Region Association: NineFourteenerVille |
hopefully he capped the lines to the can as you would expect a tech to do.
---and did not re-route them into anything else. i think i have read something about one vacuum line from the distributor in some cars (later 1.8 L jet) which is not meant to be hooked up, it just is there but goes nowhere. some 74 1.8s definitely have the green line from the distributor (at the base of the dist) hooked up to one side of the throttle body and the upper line from the distributor hooked up the other side of the throttle body. some diagrams are here with some discussion about charcoal cannister plumbing. http://www.914world.com/bbs2/index.php?showtopic=347951 i will see if i can dig up the discussion i thought i read about the unconnected vacuum line. i don't think that was about 2.0 D Jet cars, fairly sure it was something about some 1.8 L jet. but emorygt350 is talking about the same thing in post above - it could be 2L cars that have the hose that goes nowhere out of the dist. Given it is a 75 1.8 L jet it definitely has the can in the engine bay and directly beside the battery. |
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