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Old 06-21-2021, 05:35 PM   #1
leecatd8209
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Default LH2.2 760 No Spark

Got the engine swap all buttoned up and now I have no spark. I've got power to the coil, power and ground at the power stage, and I swapped in the power stage from my running 240 with no change. No spark out of the coil.

The hall sender is plugged in, and it ran before I did the swap.

I'm fairly certain the distributor was under water during a recent flood, but even if the hall sensor was bad I should still have spark from the coil, no?

Thanks in advance for any assistance.
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Old 06-21-2021, 07:25 PM   #2
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Turns out my timing light is broken. Got an extra set of hand on it and have verified spark is present.
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Old 06-21-2021, 08:51 PM   #3
ZVOLV
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Do you have injector pulse?

Do you have a test lamp?
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Old 06-21-2021, 09:14 PM   #4
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Quote:
Originally Posted by ZVOLV View Post
Do you have injector pulse?

Do you have a test lamp?
I don't have injector pulse. I do have a test light.

There's a random hot black wire that's running up the harness with the injector grounds by the fuel rail. Where's that little guy's home?

And I cannot for the life of me find the radio suppression relay anywhere, would this car have that?
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Old 06-22-2021, 08:54 AM   #5
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Does the tach tach?
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Old 06-22-2021, 09:03 AM   #6
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Quote:
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Does the tach tach?
It bounces around a little bit
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Old 06-22-2021, 09:19 AM   #7
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From what I understand, if the tach needle bounces when you crank, you should be getting signal from the hall sensor.

Here is a drawing stolen from https://forums.turbobricks.com/showthread.php?t=329862. From the diagram the coil pulse is sent from the EZK to the power stage pins 16 (power) and 20 (GND).
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Old 06-22-2021, 09:27 AM   #8
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Turbo or no? If turbo - do you have the injector ballast pack plugged in?
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Old 06-22-2021, 09:38 AM   #9
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It is a turbo, the tach is taching, I have the injector resistors plugged in, I've verified power and ground at the power stage with the key on.

The car ran before I did the engine swap, so I've probably missed something, but all my checks so far are showing that everything should be good. I might have another set of injectors laying around to try. Even if the impedance is wrong they should still fire, right?
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Old 06-22-2021, 12:03 PM   #10
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Got it running. All 4 injectors were bad. They must not have liked the ride in the ultrasonic cleaner.
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