'75 1.8L Idling at 1,600 RPM -, Vacuum advance on distributor connected and... |
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
'75 1.8L Idling at 1,600 RPM -, Vacuum advance on distributor connected and... |
Rick986 |
Sep 17 2021, 04:35 PM
Post
#1
|
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... |
jcd914 |
Sep 19 2021, 12:31 AM
Post
#2
|
Advanced Member Group: Members Posts: 2,081 Joined: 7-February 08 From: Sacramento, CA Member No.: 8,684 Region Association: Northern California |
You should not be idling at 1600 RPM.
If what the tech did actually corrected a problem he only fixed part of it. There are several variations to the hose routing and I usually have to search the diagrams until I find one that has all the equipment the car I am working has. Examples: Does it have EGR? Does it have Air Injection? Does it have the charcoal canister in the engine compartment or in the frunk? A You need to verify the equipment your 1.8 has and then make sure the vacuum lines are routed correctly. Then check and adjust your timing and idle speed. Good Luck Jim |
Rick986 |
Sep 19 2021, 03:11 PM
Post
#3
|
0-60 in 14 seconds! Group: Members Posts: 141 Joined: 31-August 21 From: NE Ohio Member No.: 25,869 Region Association: Upper MidWest |
Thanks Jim. The car had a charcoal canister that had been taken off because it was deteriorating. The tech did something with those lines after deciding to not reinstall the canister.
I'm taking it back tomorrow to be checked out and probably reverse what he did. I don't know enough about this car yet to do the work myself. I appreciate your feedback! You should not be idling at 1600 RPM. If what the tech did actually corrected a problem he only fixed part of it. There are several variations to the hose routing and I usually have to search the diagrams until I find one that has all the equipment the car I am working has. Examples: Does it have EGR? Does it have Air Injection? Does it have the charcoal canister in the engine compartment or in the frunk? A You need to verify the equipment your 1.8 has and then make sure the vacuum lines are routed correctly. Then check and adjust your timing and idle speed. Good Luck Jim |
Lo-Fi Version | Time is now: 9th June 2024 - 11:05 AM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |