'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... |
emerygt350 |
Sep 19 2021, 06:17 PM
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#2
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Advanced Member Group: Members Posts: 2,145 Joined: 20-July 21 From: Upstate, NY Member No.: 25,740 Region Association: North East States |
Exactly. When I reverse my retard and advance hoses my idle jumps to 1500-1600. Ask me how I know....
Many post 73 models just left the advance unattached apparently (smog?) but kept the retard. On a 74/75 I was just looking at the actual port on the TB was cut off and filled. Now 1.8s are different, but if you have both advance and retard I would (as the diagram shows) be very careful about which port your two lines go into. You could have this fixed in two seconds if this is in fact the issue. |
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