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DIY!! Fuel sync without scan tools

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Old Jul 13, 2013 | 03:08 AM
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Cool DIY!! Fuel sync without scan tools

To do this you will need a wire brush a multimeter and a fair amount of patience. 1st make sure your distributor is installed correctly leave the hold down snug but you will have to be able to turn it. next using your wire brush clean the dirt and rust from your harmonic balancer if you have one of the V8 rigs you will be lookin for the mark that reads v8 if u have a v6 u will be lookin for the mark that says v6 line the appropriate mark up with the 0 degree or the TDC mark on the timing chain cover just like when your setting your ignition timing. Step 2 find the wires coming from your distributor there will be 3 of them. now on the harness side of the plug locate the tan or brown wire. Now set your multimeter to a 20 amp read on the DC side and probe the brown or tan wire with the red lead on the multimeter and connect the black lead to the neg side of your battery. 3rd switch on your key but DO NOT crank the vehicle!!!!! with the meter hooked up watch the reading as u gently rotate the distributor back and forth you will see the reading change from 0.05 to 5.02. The goal here is to set it on the 5.02 side just before it goes back to 0.05. this is where u need the patience. this worked for me after a distributor swap now my 3.9 is purring like a kitten.
 
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Old Jul 13, 2013 | 12:57 PM
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Dude, you are my hero!
 

Last edited by Brian in Tucson; Jul 13, 2013 at 01:02 PM.
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Old Jul 14, 2013 | 11:49 PM
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I can't get to the connector to hook up the multimeter. So I just static timed it. Line up the mark on the engine with the one on the pully, lined up the rotor with the mark on the distributor.

Truck used to run, now it won't start. So I got to looking and it looks like the wires are installed on the cap one spot off, then the previous "mechanic" rotated the distributor to line up the rotor with the proper wire.

No problemo, I'm looking at the cap and rotor and thinking it's a good time for a tune up, so I'll get it all back to correct and static time it for fuel timing. Lucky I have a KLR to make tool and part runs with--beats working on a hot engine.
 
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Old Mar 13, 2023 | 02:42 PM
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Default How do I static time would that be the same as using a timing light with a harmonic b

Originally Posted by Brian in Tucson
I can't get to the connector to hook up the multimeter. So I just static timed it. Line up the mark on the engine with the one on the pully, lined up the rotor with the mark on the distributor.

Truck used to run, now it won't start. So I got to looking and it looks like the wires are installed on the cap one spot off, then the previous "mechanic" rotated the distributor to line up the rotor with the proper wire.

No problemo, I'm looking at the cap and rotor and thinking it's a good time for a tune up, so I'll get it all back to correct and static time it for fuel timing. Lucky I have a KLR to make tool and part runs with--beats working on a hot engine.
Hey man will the timing light work the same as the static time or is that just the proper name for using a timing light I'm trying to avoid having to buy a live scanner..
 
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Old Mar 13, 2023 | 02:58 PM
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Try this. That bionicdodge link is dead but you can still find it on the wayback machine.
https://dodgeforum.com/forum/2nd-gen...fuel-sync.html
 
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Old Jun 4, 2025 | 05:49 PM
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Default Fuel sync when i line up the marks mybrotor is backwards

Originally Posted by bballard1689
To do this you will need a wire brush a multimeter and a fair amount of patience. 1st make sure your distributor is installed correctly leave the hold down snug but you will have to be able to turn it. next using your wire brush clean the dirt and rust from your harmonic balancer if you have one of the V8 rigs you will be lookin for the mark that reads v8 if u have a v6 u will be lookin for the mark that says v6 line the appropriate mark up with the 0 degree or the TDC mark on the timing chain cover just like when your setting your ignition timing. Step 2 find the wires coming from your distributor there will be 3 of them. now on the harness side of the plug locate the tan or brown wire. Now set your multimeter to a 20 amp read on the DC side and probe the brown or tan wire with the red lead on the multimeter and connect the black lead to the neg side of your battery. 3rd switch on your key but DO NOT crank the vehicle!!!!! with the meter hooked up watch the reading as u gently rotate the distributor back and forth you will see the reading change from 0.05 to 5.02. The goal here is to set it on the 5.02 side just before it goes back to 0.05. this is where u need the patience. this worked for me after a distributor swap now my 3.9 is purring like a kitten.
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Old Jun 4, 2025 | 05:51 PM
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Originally Posted by bdog
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Roll the engine over one more time.
 
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