 FI trigger points |
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| mskala |
 May 28 2022, 11:19 AM
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#1
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R  Group: Members Posts: 1,931 Joined: 2-January 03 From: Massachusetts Member No.: 79 Region Association: None 
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Was diagnosing a friend's 2.0 car that didn't seem to have much power.
Timing looks good, but then if I take off either plug wire #1 or #4, the idle doesn't change. Seems like this must be the trigger points or wires going to it. Is there really anything else to try? Back when I had my 4-cyl, I never needed to mess with the trigger points. Do they ever wear out? Distributor is not out of the car yet. Thanks |
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| Lockwodo |
May 28 2022, 11:32 AM
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#2
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Member Group: Members Posts: 213 Joined: 23-December 21 From: Santa Cruz, Californnia Member No.: 26,193 Region Association: Northern California
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QUOTE(mskala @ May 28 2022, 10:19 AM)  Was diagnosing a friend's 2.0 car that didn't seem to have much power. Timing looks good, but then if I take off either plug wire #1 or #4, the idle doesn't change. Seems like this must be the trigger points or wires going to it. Is there really anything else to try? Back when I had my 4-cyl, I never needed to mess with the trigger points. Do they ever wear out? Distributor is not out of the car yet. Thanks I just had a similar issue with my '74 2.0. Misfire on 1,4 or on 2,3 indicates a trigger point issue. I pulled the disty and removed the trigger points and cleaned them with contact cleaner, and the problem has gone away, at least for now. The trigger points are low power so according to some they can last 100K miles. |
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| mskala |
May 28 2022, 07:04 PM
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#3
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R Group: Members Posts: 1,931 Joined: 2-January 03 From: Massachusetts Member No.: 79 Region Association: None
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Thanks will need to take them out and inspect.
I guess it's also possible the output transistor or whatever from the computer on 1-4 is bad. |
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| Lockwodo |
May 28 2022, 07:22 PM
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#4
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Member Group: Members Posts: 213 Joined: 23-December 21 From: Santa Cruz, Californnia Member No.: 26,193 Region Association: Northern California
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QUOTE(mskala @ May 28 2022, 06:04 PM) Thanks will need to take them out and inspect. I guess it's also possible the output transistor or whatever from the computer on 1-4 is bad. The trigger points are super easy to check. Mine were oily and dirty and cleaning them helped a lot. At the same time, you'll have the disty out where you can see it and can check for shaft wobble and to make sure the mechanical advance mechanism is turning smoothly. |
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