I have a 2000 Villager- rough idle, throwing misfire code on cylinder 3- diagnosed the problem, injector #3 is not firing at all-attributing this to a mechanical failure of the injector. I did have to replace #4 injector last summer- with this latest failed injector, do I replace all 3 injectors on the back bank while #3 is being replaced? I understand this is not common for injectors to fail. Just trying to figure out if replacing all 3 would be necessary or if I can save some extra cost. Also – should I also replace fuel filter and perform fuel injector cleaning treatment at same time?
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