1986 302 EFI Distributor Recommendations
Cargo Master
Joined: Sep 2006
Posts: 2,120
Likes: 390
From: Evansville, Indiana
https://www.summitracing.com/parts/smp-dg17
do yall think this is cast iron or hardened steel? Is it anyones guess? It's like the only gear available
do yall think this is cast iron or hardened steel? Is it anyones guess? It's like the only gear available
If you get the code 18 on demand, test the wire from the SPOUT plug to the ECM connector post 36. Check for continuity. Check for short.
A code 18 can be set if there is a problem with the DK GR and Y wire that runs from the coil(-) to pin 4 on the ECM. Check it the same as for SPOUT wire. Note that this wire has a 22k ohm resistor near the coil end. Instead of very low ohm resistance it will have the 22k ohm resistance.
This wire signals the ECM that the coil has indeed fired as commanded. The resistor is to buffer the voltage spike that occurs each time the power through the coil is broken. Can be several hundred volts.
Moderator
Joined: Jan 2001
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From: Virginia
Read the fine print carefully on the warranties. Not saying O Reilly's does this but others do. Some have "lifetime replacement" not "lifetime replacements". Big difference there.
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Mountain Pass
Joined: Oct 2022
Posts: 107
Likes: 3
That gear, since it fits a long list of non-roller engines, is cast iron. If you rebuild your distributor the best gear to use is the one on it. Any aftermarket gear requires a tricky redrill of the shaft. You need to understand how to set proper endplay.
If you get the code 18 on demand, test the wire from the SPOUT plug to the ECM connector post 36. Check for continuity of 22k ohms. Check for short.
If you get the code 18 on demand, test the wire from the SPOUT plug to the ECM connector post 36. Check for continuity of 22k ohms. Check for short.
Moderator
Joined: Jan 2001
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From: Virginia
That is good. There is simply a wire going from pin 36 to the spout connector. You just put your meter on both ends of the wire and got continuity or very low ohms, which is good. You can put your meter on pin 36 and then put the other meter lead on a good ground. You should get very high ohms. If you get very low, that wire to the spout is touching metal somewhere and is grounded out.
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Mountain Pass
Joined: Oct 2022
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Likes: 3
That is good. There is simply a wire going from pin 36 to the spout connector. You just put your meter on both ends of the wire and got continuity or very low ohms, which is good. You can put your meter on pin 36 and then put the other meter lead on a good ground. You should get very high ohms. If you get very low, that wire to the spout is touching metal somewhere and is grounded out.
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Mountain Pass
Joined: Oct 2022
Posts: 107
Likes: 3
That is good. There is simply a wire going from pin 36 to the spout connector. You just put your meter on both ends of the wire and got continuity or very low ohms, which is good. You can put your meter on pin 36 and then put the other meter lead on a good ground. You should get very high ohms. If you get very low, that wire to the spout is touching metal somewhere and is grounded out.
Question - how close do you have to be when it comes to the rotor mark lining up? We couldnt get it exactly the same but could get it a little after or a little before our original distributor mark. We manually lined up the rotor to #1 spark plug before pulling old one, marked the plenum to line up new one.
Lead Driver
Joined: Jun 2013
Posts: 5,667
Likes: 1,159
From: Tolland, CT
If you got it to run, decently, you are close. With a timing light and timed at spec, it should run good, But, don't forget, if the chain is old, stretched, on spec, may not be the best.
Have you driven it yet, is there any pinging ?
Have you driven it yet, is there any pinging ?
Moderator
Joined: Jan 2001
Posts: 56,984
Likes: 2,738
From: Virginia
Installed a new Distributor yesterday, instantly could tell it ran better. I now need to get my timing light and properly set timing to 10 degrees BTDC, I think I will need to take a white marker of some kind and mark the 10 on the harmonic balancer.. but the truck is running again.
Question - how close do you have to be when it comes to the rotor mark lining up? We couldnt get it exactly the same but could get it a little after or a little before our original distributor mark. We manually lined up the rotor to #1 spark plug before pulling old one, marked the plenum to line up new one.
Question - how close do you have to be when it comes to the rotor mark lining up? We couldnt get it exactly the same but could get it a little after or a little before our original distributor mark. We manually lined up the rotor to #1 spark plug before pulling old one, marked the plenum to line up new one.
On the marking thing on the balancer, I always do that, especially since I am getting older. It's best to turn the engine around by hand till the marks are on the very bottom, and then lay on your back and clean up the marks. Then I use white out that you use to correct typing errors. Easy to get and comes with a little brush. I guess they still sell it, I know a lot of people have started using that white correction tape.
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Mountain Pass
Joined: Oct 2022
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It will line up once you set the timing. As you are setting the timing mark and moving the distributor body, you are also moving the dist in the relation to the rotor. The only problem you can run into is if the module sticking out on the distributor swings around and hits something on the engine and won't let you turn it enough to get it timed correctly.
On the marking thing on the balancer, I always do that, especially since I am getting older. It's best to turn the engine around by hand till the marks are on the very bottom, and then lay on your back and clean up the marks. Then I use white out that you use to correct typing errors. Easy to get and comes with a little brush. I guess they still sell it, I know a lot of people have started using that white correction tape.
On the marking thing on the balancer, I always do that, especially since I am getting older. It's best to turn the engine around by hand till the marks are on the very bottom, and then lay on your back and clean up the marks. Then I use white out that you use to correct typing errors. Easy to get and comes with a little brush. I guess they still sell it, I know a lot of people have started using that white correction tape.
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