Hey TB!

Now you got me curious.... What's the "fuel sync" and how do you reset it....

Thx!

 

Unless you've moved the distributor or you have an extremely sloppy/slack/jumped timing chain, I suspect that a fuel sync issue isn't the issue. More likely, a crank sensor issue, as those are notorious for causing the type of issue you're experiencing. I had the same issue with my truck a few months ago, although I had my scanner with me when the engine shut down on the road. When I scanned it at the time of failure, the scanner displayed a code about the crank sensor intermittently failing. I was able to get home by disconnecting the battery, waiting a few moments and then reconnecting the battery. Once the battery was reconnected, the truck started right back up and I was able to make it home to order a new Mopar crank sensor off eBay. Replaced the crank sensor and no more issues!

Fuel sync is essentially the timing of the injector squirt into each cylinder. You can use an old school Snap-On MT2500 scanner (with the appropriate cartridge and key) to set/reset fuel sync.

 

Or put #1 cylinder on TDC of the compression stroke and make sure the distributor looks like this.

 

Fuel sync 'as described' is just what atomdog stated. My problem was, I had to take out my distributor ***'y, years back, to get a broken dist. cap screw out of the dist. housing. The first time I was fortunate, got a neighbors snap on scan tool (atomdog version) to reset the fuel sync. The next time...not so much. No mechanics claimed they knew how to set the fuel sync but they "knew some one" n it would cost a fortune. So I bought a Launch brand bi-directional scan tool because I had/have multiple cars with multiple problems. The cost at a mechanic shop THAT I DIDN'T TRUST TO REPAIR PROPERLY, for just 1 vehicle repair, exceeded the cost of a Launch. So I stuck a cro bar in my wallet n let'er rip. With the assurance of 20/20 hind site, twas the best money I ever spent. I paid off the cost of the scanner in less than 2 repairs. The Launch has been a godsend to a DIY'er like me. My newest vehicle, an '08 Mazda 3, now has 270K+ on it, n the nitnoid failures, while getting more n more frequent, are simple, qwik and much cheaper to fix.
So it's fair to say, if ya got multiple vehicles you 'upkeep' yourself. The bi-directional scan tool, in my humble opinion, is every bit as important as any wrench you own, LOL!

 

These days, if you want to work on 'em, the better your scan tool, the easier it is. Now I am not advocating spending 5 grand on the latest and greatest snap-on scanner...... just keep in mind, the more the scanner can do, the easier troubleshooting becomes... and with labor rates north of 100 bucks an hour, it won't take long for it to pay for itself.

 

Thanks everyone for their help!!!

I think my next step will be to replace the crank sensor and see what happens.

And as my Dad use to say about pools, the best scanner is a buddy's scanner. lol...

 

I hear ya brother. When I started fixin' cars, they still had things called carbs, points n condensers AND leaded gasoline, LOL! These days, without a bi-directional scanner ya just about can't do anything anymore.

 

Those where the days! Back before they banned leaded gas i used to get half a tank regular and the other half premium. I got a lot of strange looks because they didn't understand why. Lead from the regular and octane from the premium.