Adjusting Air / Fuel Mixture |
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Adjusting Air / Fuel Mixture |
sjhenry1075 |
Jun 22 2021, 08:29 AM
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#1
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Member Group: Members Posts: 268 Joined: 22-July 12 From: Stevensville, MD Member No.: 14,709 Region Association: North East States |
Hey everyone, please excuse my lack of knowledge on this subject, but I have a question regarding air / fuel mixture adjustment on my 71 1.7 with stock D-jet. I posted this question on Facebook but wanted to try here as well.
Back story: my car will only idle and drive when both vacuum lines are disconnected from the distributor. When connected (I used a diagram found on 914world so I know they aren't flipped) the car barely idles when cold or warm, and it is almost undriveable; it surges, bucks, and hesitates. If I remove both vacuum lines from the distributor it idles and runs great. From what I understand from the replies on FaceBook, this could be an air/fuel mixture issue, but how is that adjusted with for the 71? Is there a certain procedure for this? Thanks in Advance for any assistance you can provide! For those going to PA for the Northeast gathering, I'm looking forward to meeting you! |
brant |
Jun 22 2021, 01:03 PM
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#2
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914 Wizard Group: Members Posts: 11,639 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
another thing that can make the car run rich is a failing Cylinder Head Temp sensor
you can check them with an OHM meter. pulling if from the engine isn't hard.. involves a modified 13mm deep socket. and allows you to put the sensor into the freezer or boiling water for the full range testing. |
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