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Mazda B-Series Specific Addressing issues specific to the Mazda B-Series trucks

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Old 08-24-2010, 08:56 PM   #1
79Camaro
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Default Ignition timing

My truck's (94 B3000) distributor is set incorrectly, I have been seaching for a few hours now for the corrct procedure to set the ignition timing, and have become a little confused. Heres what know

1. warm engine
2. connect timing light
3.turn distributor counter clockwise=advance/clockwise=retard
4.set at 10 degrees BTDC
5. tighten down distributor check timing again


Now what I dont know, Is there a wire I have to disconnect before setting the timing? Whats it called and where is it located? I have been dying to get this truck on the road. Any help is much appreciated.
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Old 08-24-2010, 09:04 PM   #2
fordman4x492
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all u gota do is turn the distributer untill it is where it needs to be
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Old 08-24-2010, 11:31 PM   #3
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Not exactly sure on this one, but most engines with distributors have a vacuum advance which advances the timing as load increases. Most manufacturers recommend disconnecting the vacuum hose lead to the vac advance and plugging it. (An old golf tee works great here). Then set the distributor till the pointer lines up with the specs. Reconnect vac advance hose when done.

Not sure I've ever heard of a wire that needs to be disconnected though.
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Old 08-25-2010, 06:07 AM   #4
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There's no mechanical advance on that distributor. The timing is controlled by the computer. there is a connector with a shorting plug in it that needs to be pulled to set the base timing but I don't know where it's located on the three liter, probably close to the distributor. It's been mentioned many times on here but I can't find it.
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Old 08-25-2010, 06:42 AM   #5
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trace the wires from the dizzy there should be a wire with a fuse type disconnect pull the disconnect from the connector. You can also try adjusting the timing with everything connected so the timing is about 37 degrees at 3500 rpm. If you pull the disconnect and the engine dies your too far retarded keep the light on it and have someone crank on it while you turn it to 10 degrees it should start
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Old 08-25-2010, 06:43 AM   #6
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It`s called the spout wire
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Old 08-25-2010, 07:12 AM   #7
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Thanks for the info Martin. I'm not too familiar with the distributor type motors used in Mazdas and Rangers. And I come from the old school V8 days. So I appreciate the education. Always something more to learn.
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Old 08-25-2010, 10:53 PM   #8
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Thanks for all the help

I followed the wire off the dizzy and didnt come across the spout wire, so I then checked the firewall near the EEC but it wasnt there either. I finally found it behind the front driver side headlight. Im 98% sure this is it but thought Id put up a photo just to make sure.




So now the steps would be

1. warm engine
2. turn off engine then unplug spout
3. restart engine, hook up timing light, adjust dizzy
4. tighten down dizzy bolt, check timing again
5. then kill the engine and reconnect spout, or connect spout then kill the engine?
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Old 08-25-2010, 11:12 PM   #9
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If it dont start put the timing light on it and have someone crank on it so you can set it while the engine is turning over. It should start when you get close but let the engine warm all the way up first before you lock it down. Then it dont matter when you plug the spout back in. If you cleaned or replaced any of the sensors disconnect the battery for 1/2 hour to reset the computer and run it for 20 minutes at medium speeds then check it again when up to temp.
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Old 08-26-2010, 09:10 AM   #10
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Quote:
Originally Posted by 79Camaro View Post
1. warm engine
2. turn off engine then unplug spout
3. restart engine, hook up timing light, adjust dizzy
4. tighten down dizzy bolt, check timing again
5. then kill the engine and reconnect spout, or connect spout then kill the engine?
Yup.

Doesn't that have a remount mounted TFI? Would explain why it's be near the head light, but you'll know if it is right or not, when it's plugged in the timing will be all over the place. When it's unplugged the timing stays static. Also helps to put a dab of something you can see real well on 10 BTDC on the dampner, like white paint marker.
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