2000 Taurus misfire on cylinder 1.

Plugs and wire change is probably good idea if they are original. Injectors going bad isn't very common on those and adding cleaner to the fuel could be just a coincidence.

Trick is to see what goes missing while the misfire is occurring. That would give you direction.


It's a coincidence that happened a few times. I have had a couple bad injectors. With them the problem happened all the time. This miss only happenes if the car isn't warmed up and in traffic. That is what is making me scratch my head on this one. And considering the plenum is off for the plugs and wires change I won't put it together and find out it is a bad injector and have to rip it apart again. I won't be able to get the car running until I get the new injector. I had to order one, no one had it in stock. If it isn't the injector I only wasted $30.

It's a coincidence that happened a few times. I have had a couple bad injectors. With them the problem happened all the time.

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You have had to replace injectors on this vehicle before with only 84 K miles? If so, what was faulty on them?

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You misunderstood me. I have replaced injectors on other cars a with similar problem. So it isn't all that uncommon to have injector problems. I recently had a 95 Grand Prix with a bad miss and used injector cleaner and it went away. Maybe some dirt in the gas.

I can't seem to get the right injector for this car at the local parts stores. I will have to go to Ford to find one on Monday.
If the problem is the injector or if it isn't, it is still getting changed while I still can get to it. The injector itself may be good but might be clogged.


(This post was edited by rusty95 on May 10, 2015, 7:04 AM)

Can't really give you a good answer to that because really don't know what is causing the misfire.

I know DIY don't have all the tools professionals use to troubleshoot misfire issues, but from experience on those if an injector is dirty and causing misfires, it probably won't be intermittent. There could possibly be an electrical problem. What is the resistance of the suspect injector compared to the others? Of course, some injectors might not show coil problems until they are exposed to certain temperatures. You could have an electrical injector circuit issue, but if that is the case you would probably be getting an injector circuit code (P0201).

Ignition coil problems are common on those. Adjustable spark tester might be able to pick up on a coil fault. Then again ignition coils may become faulty depending on the temperature they are exposed to.

Not all injectors are the same and some are designed to be more deposit resistant. It wasn't too uncommon to see dirty injector discs on the old GM multec injectors causing misfires. The Ford's EV injectors didn't really have too many problems in my travels. I've only had to replace EV injectors once that were leaking with pressure on them. The only thing we could come up with is someone put something in the fuel tank cause they all were leaking (extremely unusual).