 FI system troubleshooting, Two FI components will not work |
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| Such914 |
 Jun 20 2018, 07:58 PM
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#1
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Newbie  Group: Members Posts: 2 Joined: 1-February 18 From: Wisconsin Member No.: 21,852 Region Association: Intermountain Region  |
Hello, my mechanic is finishing up a rebuild of my cars FI system, and we cannot get it to work. We have some parts we know are broken, but replacements haven’t worked either. Are there any known sources for these?
-Manifold Pressure sensor (known as the 'grenade') -Air bypass valve The issue that we are experiencing is misfiring and lack of power in the top end. Apparently they have tried 3 sensors to no avail. It is a ‘74 2.0. Thank you! |
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| dr914@autoatlanta.com |
Jun 25 2018, 12:31 PM
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#2
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914 Guru Group: Members Posts: 7,900 Joined: 3-January 07 From: atlanta georgia Member No.: 7,418 Region Association: None |
those are not the problem, I would say that. your distributor is the problem, trigger points or ignition points. A bad pressure sensor gives great top end power, an open aux air valve just causes high idle or poor cold idle
QUOTE(Such914 @ Jun 20 2018, 06:58 PM)  Hello, my mechanic is finishing up a rebuild of my cars FI system, and we cannot get it to work. We have some parts we know are broken, but replacements haven’t worked either. Are there any known sources for these? -Manifold Pressure sensor (known as the 'grenade') -Air bypass valve The issue that we are experiencing is misfiring and lack of power in the top end. Apparently they have tried 3 sensors to no avail. It is a ‘74 2.0. Thank you! |
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Posts in this topic
Such914 FI system troubleshooting Jun 20 2018, 07:58 PM
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