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Cranks but does not start?

Tiny
JBANDCO7
  • MEMBER
  • 1987 TOYOTA PICKUP
  • 1.4L
  • 4 CYL
  • 2WD
  • MANUAL
  • 200,000 MILES
We had this problem last year and I put a new distributer, plugs, cap, rotor, wires, pickup coil in distributer and an igniter
and set the air gap on pickup coil. The car ran fine for a couple of months then it wouldn't start again. Back to no spark.
Primary and secondary resistance within specs. With ignition on, I get 12 volts to coil and out of coil to the distributer cap.

Help
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Wednesday, February 8th, 2023 AT 4:53 PM

12 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Hi,

Do you know if this is the 22r or 22re engine? I just took a look at the ignition schematics, and they are slightly different.

Additionally, if you have power to the coil and distributor, that leaves the pick-up coil. Have you checked it? If not, take a look at the pics below. They explain how to test resistance in the pick-up coil. There are two different designs. Pickup coil resistance should be 130-190 ohms. Check this and let me know the results.

Also, let me know which of the two engines you have.

Take care,

Joe

See pics below.
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Wednesday, February 8th, 2023 AT 7:59 PM
Tiny
JBANDCO7
  • MEMBER
  • 7 POSTS
It's a 22r, carbureted.
I'll check the pickup coil after work and let you know.
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Thursday, February 9th, 2023 AT 5:57 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Hi,

Sounds like a plan. The info I provide is for the correct engine, so that is good to know. LOL Let me know what you find or if you have questions.

Take care,

Joe
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Thursday, February 9th, 2023 AT 6:48 PM
Tiny
JBANDCO7
  • MEMBER
  • 7 POSTS
I have an external coil, which screws do I touch to test continuity? The one on the outside with both probes by the vacuum diaphragm? Or the two internal screws holding the pickup coil to Distributor?

John
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Wednesday, February 15th, 2023 AT 12:58 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Hi,

In this case, you need to touch both of the wires with the test leads. (One wire with one test lead and the opposite wire with the other). You are checking to see how much resistance is occurring within the coil. Do it at the connector if possible.

Let me know what you find.

Joe
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Wednesday, February 15th, 2023 AT 6:39 PM
Tiny
JBANDCO7
  • MEMBER
  • 7 POSTS
I did it at this connector.
.529 k ohms so 529?
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Wednesday, February 15th, 2023 AT 7:25 PM
Tiny
JBANDCO7
  • MEMBER
  • 7 POSTS
Plug connector.
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Wednesday, February 15th, 2023 AT 7:26 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Hi,

That is excessive. I looked at your pic. Are you checking the harness connector or the one that leads to the pickup coil?

Let me know.

Joe
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Wednesday, February 15th, 2023 AT 8:54 PM
Tiny
JBANDCO7
  • MEMBER
  • 7 POSTS
I'm checking the female plug end which is connected to the pickup coil.
John
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-1
Thursday, February 16th, 2023 AT 4:39 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Okay, I just wanted to make sure it was the PU-coil being checked. If that is the resistance you are getting, according to the manual, it has failed and needs to be replaced. The manual indicates it should be between 130 and 190 Ohms. You are well over 500.

Let me know your thoughts.

Joe
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Thursday, February 16th, 2023 AT 5:15 PM
Tiny
JBANDCO7
  • MEMBER
  • 7 POSTS
That's what I'm thinking too. I have one on order and it should arrive on Monday. I'll update you when it's installed.

John
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Thursday, February 16th, 2023 AT 5:36 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
John,

That sounds like a plan. I hope it takes care of the issue.

I look forward to hearing from you.

Take care,

Joe
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Thursday, February 16th, 2023 AT 7:43 PM

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