Ignition distributor?

Hello,
Do you have a timing light? You will need one to adjust the timing correctly. If not you can pick one up at a Harbor Freight for around $30. I will copy the timing adjustment instructions below. You will need to locate the SPOUT connector/plug next to the distributor. It will look like a wire harness with something plugged in it that goes nowhere. Unplug this and then start the truck and let it get warm. Then loosen the distributor hold-down screw and turn the distributor to 10TBDC. This should be clear once you have a timing light shining on it.

INITIAL TIMING
- Place transmission in NEUTRAL or PARK with Air Conditioner/Heater in OFF position.
Cylinder Numbering And Distributor Location
- Connect an inductive timing light.
- Disconnect the single wire in-line Spark Output (SPOUT) connector or remove the shorting bar from the double wire SPOUT connector near the distributor.
- Start engine and allow to reach operating temperature.
- With engine at timing rpm, check or adjust initial timing to specification.
- Reconnect single wire in-line spout connector or reinstall the shorting bar on the double wire spout connector.
- Check timing advance to verify distributor is advancing beyond the initial setting. See: Ignition Timing > Testing and Inspection
- Remove test instruments.

Let us know how it goes,
William

Hello,

If the timing is correct, I would move on to checking the vacuum pressure. Do you have a vacuum gauge? You can also check by spraying starting fluid lightly around the intake hoses and watch for a response from the engine.

William

Okay, I understand you. It sounds like you need to take out the distributor and rotate 180 degrees.

William

Let's start with the engine at TDC. This way the #1 cylinder will be at the top of its travel. With the distributor cap off, the rotor should be pointing at cylinder #1. I attached a diagram of your configuration for your reference. If it is not pointing at cylinder #1 then turn the distributor to match and turn the engine over twice and recheck. Once it lines up correctly you can put it back together.

Now, the important part about changing the timing. Remove the SPOUT connector before starting the truck. This is not optional. With the SPOUT connector removed, start the truck and use a timing light to check the timing. Loosen the distributor bolt and turn the distributor until you see the line revealed by the timing light on the crank pulley line up with 10BTDC. Tighten the distributor bolt and turn off the truck. Now, install the SPOUT connector and start the truck again and test drive.

Let's see how it goes,
William

That's not a good sign and could be part of the problem. If there are issues with the oil pump shaft going into the distributor it can easily shear off the pin because of the extra load. If this is a new distributor and you keep putting pins in it, I would inspect the pump / shaft. Turn the distributor upside down and look inside the bottom where the oil pump shaft will go. Is it completely clean? Also, when tightening down the distributor the gear does not need to bottom out in the engine, this can also cause more torque on the pin. Outside of looking at the distributor side the oil pump would have to be fished out once the oil pan is off.

William

I'm glad to hear it is doing better. Please let us know how it turns out with the new parts. Tell a friend, and thank you for using 2carpros. You're welcome here anytime.

William