Engine Hunts at Start and Then Rough Idle When Warm

[lazabby]

My problems started a few weeks ago. The engine was running very well except for a minor hot start issue. I had the injectors cleaned. Now the
engine hunts when first starting for about a minute. I assume it does this while the cold start injectors is active. Here is a video of it hunting and then suddenly stopping:
https://youtu.be/4FEjgP0si2U

The idle once warmed up is rough. I've been trying to put a dwell meter and check the idle but no matter which way I adjust the screw the dwell reading does not change. Could the CO plug be bad? Here is a video after the engine has warmed up.

https://youtu.be/6QxHJeUyQsE

What do I need to fix?

[Bitsyncmaster]

Cold start injector only fires when the starter is turning.

You probably need a mixture adjustment after your injectors were cleaned. But if you don't get any dwell reading you may have a component failure. Is your FV buzzing?

[Elvis]

Hi Shannon - what dwell are you reading ? from the ignition ???



Didn't you install an EFI some years ago when you asked people how the idle works ?

[lazabby]

Hi Shannon - what dwell are you reading ? from the ignition ???



Didn't you install an EFI some years ago when you asked people how the idle works ?

I don't have the EFI anymore. I have the stock engine now. The dwell meter is hooked to the diagnostic plug by the firewall. You can see it in the video.

[Bitsyncmaster]

I don't have the EFI anymore. I have the stock engine now. The dwell meter is hooked to the diagnostic plug by the firewall. You can see it in the video.

If the FV is buzzing you should be reading some dwell. There is a two pin connector with an orange wire and purple wire on your engine harness. The orange wire is what connects to the diagnostic port. You can also read dwell right off the FV wire.

[Elvis]

My diagnostic plug is further down ond the left and black and not visible on the video !?!?!?!


BTW - I only use an oscilloscope for these adjustments, just in case you know someone...


Didn't you say that EFI is much easier, more fuel efficient and gets you more power ?
What was the reason to go back to stock ?

[lazabby]

Cold start injector only fires when the starter is turning.

You probably need a mixture adjustment after your injectors were cleaned. But if you don't get any dwell reading you may have a component failure. Is your FV buzzing?

It seems to be buzzing as it feels like it when I place my hand on it.