It was originally purchased in Sept 2017 so three years had gone by

 

Ah yes, the engine has a five year warranty but the fuel injectors aren't considered part of the engine. and so they only get three years Lucky break for Honda!

 

2017 Honda Fit EX with 65,000+ miles on it

I got a CEL and after 3 hours of diagnosis which includes 5 tests, this is the verdict from the Dealer.

I already ponied up the dough to replace the fuel injectors. The next Honda dealership is more than 100+ miles away and I'm gonna be out $85 diagnostic fee if I don't do the repair here to go get a second opinion somewhere else. I have fled Socal to this rural community in the middle of the country and don't plan to come back for another few months so I don't have many options.

I'm thinking of requesting them to give me the old fuel injectors in case if this is a wrong diagnosis and the fuel injectors are still good, hopefully I can sell them to an acquaintance that has a repair shop back in Socal to recoup some of the cost of the new fuel injectors.

Is this a hair-brained idea? Your opinions, please!

 

You can request the old injectors back.

As I understand they are not repairable, but your buddy might say otherwise.

Good luck, sounds like a correct diagnosis

 

I just had mine replaced with only 22k miles. Google search and you will see it’s a fairly common occurrence​​​​​​.

 

Thanks for the reply... I meant in case it was not the fuel injectors that are faulty but something else. I did a P0420 Google search and the results are all over the place. This code is so generic it's like saying something's wrong with your car!... Few mentioned fuel injectors, though... I didn't feel anything wrong with the car at all...

The thing is I've been using Chevron gas supposedly with techron (except for the last few months, mostly Marathon gas with Walmart-bought techron mixed in) ever since I got this car and it looked like it didn't help prolonging the life of the fuel injectors at all...

I'll stop using Chevron gas after the new fuel injectors are put in as it seems to be a WASTE of TIME & MONEY!

 

Looks like either the Chevron gas and/or Techron Fuel Injector Cleaner may have been the cause of fouling up your Fuel Injectors.

I've been using regular 87 octane gas at Shell gas stations. Zero issues.

 

Probably not the cause but at least we have a living proof here that this damn Techron gives ZERO HELP in prolonging the life of the fuel injectors at all. I have Chevron card so chevron is usually about 10 cents more expensive per gallon than the generic brand. So about a dollar more expensive per filling. But most of the time, I have to go out of my way to find a station with reasonable price. There seem to be ZERO Chevron gas station east of the Rockies around here.

I drove this car here from Socal and there were a few days I drove more than 8 hours per day. Could that be the cause? I've never heard of NOT driving your car continuously for more than 2 hours (which is what I did for a few days on my way here).

Or it could just be bad luck!

 

I had mine cleaned about two years ago at the dealer as part of my routine maintenance schedule. I keep my Fit within the scheduled routine maintenance according to the mileage. Maybe you needed the same

 

If the fuel injectors were redesigned for 2016+, but are still being replaced in '17/'18/'19 Fits, are they being replaced with yet another design, or are the replacements the same faulty design as before?

I have a 2019 EX with <10K miles and yesterday had a misfire on one of the cylinders. Took it to the dealer and they said it was likely due to carbon deposits on the intake valves caused by "bad gas" (I found this confusing since I only go to so-called "top-tier" gas stations). They cleaned the valves which fixed the misfire for now (unfortunately this service wasn't covered under warranty because there wasn't a part failure). Based on everything I've been reading with newer Fits having these issues, I figure it's only a matter of time before another cylinder misfire occurs and I have to take it back to get the fuel injectors replaced like so many others (hopefully while still under warranty). But is that actually a permanent fix? Am I doomed to drive around with faulty injectors and gunky valves forever? I love my little Fit but the prospect of more repairs is making me so sad.

 

Just my guess, but I'd say the '15 injectors had a design flaw.

Later years are failing due to the poor Direct Injection design that is allowing carbon deposits to form on the backside of the valves AND on the injectors themselves. The deposits eventually get bad enough to restrict fuel flow out of the injectors.

Best preventative measures are to add a catch can, use good fuel, and make sure you are running the car hard enough on each outing to get some good heat in the cylinders. The harder you drive these, they better they seem to do.

 

Hey all, my(what I believe to be) fuel injectors started having issues around 90k miles. The 2015 fit lx cvt is now at 125k but my mileage has gone from around 35-37 to 23-25. I am now stuck with the decision of dropping around 2k in repairs: fuel injectors, needs new spark plugs and maybe coils. Or I can look at trading in, problem is my exterior is getting pretty rough and I'm afraid if I try to trade in they will just subtract the repair cost and it would end up being like a $2000 trade in. I drive 20k/year should I 1. Repair 2. Trade in or 3. Keep driving it into the ground and hope for another 30-50k miles.

What would you guys do in my situation? What is the best financial decision overall.

 

That's a decision only you can make. I'm not one to throw good money at a bad situation though. Maybe I'm just lazy, but I usually go with the bail out route and move on.

 

So the dealers are just replacing dirty fuel injectors with clean ones? And that's somehow covered under warranty? My understanding is that anyone using Top Tier fuel shouldn't be getting clogged fuel injectors due to the detergents keeping the injectors clean.

As for keeping the intake valves clean, I don't know how much research has been done to show that running the car hard will remove deposits in GDI engines. In fact, the only paper I found on this says that higher engine loads lead to more intake valve deposits (source). I don't think it's possible for the intake valves to actually get hot enough to remove deposits, and increasing your engine load will only increase the amount of blowby and oil getting back to the valves.

 

No, Honda is replacing problematic fuel injectors with new ones. Honda has never given any technical explanation of why their fuel injectors - especially the 2015 version - had problems. Your use of the term "dirty fuel injectors" and "clogged fuel injectors" are your terms only, not supported by anything from Honda that I have seen. If the problem was some kind of dirt or buildup then you would assume that the problem could be cleared up by some kind of cleaning of the injectors and yet as far as the Fit goes, Honda has never authorized this that I've seen. They always order problematic injectors to be thrown away and replaced with a brand new set. Looking at the cost of new injector set you would think that they would consider a cleaning if it was in any way viable to save warranty money, but that never happens. Also, considering that the fuel being squirted through a fuel injector is at something like thousands of pounds per square inch I am puzzled as to how any build up of "dirt" on the fuel injectors can take place without it being instantly blown off.

 

I agree, that's why I'm wondering if the fuel injector replacements in '17/'18/'19 Fits are different designs from the original parts. Does anyone happen to know?

 

Same part numbers.

 

How many cc are the stock injectors?

 

I had a check engine light come on and got a P219A code on my 2016 EX with 65k miles. I had a shop near me diagnose and they gave me an estimate to replace all fuel injectors and fuel rail (other parts included in that line) for $2500. I took it to the dealer and they replaced it under warranty (I think 75k miles on those parts?). Lucky for me they covered it but I also have the mechanical breakdown insurance through Geico which covers up to 100k miles for anything like this, so I had a claim ready to go with that.

I was told by the mechanic at the dealer that he sees these a lot and sometimes the entire head needs to be replaced as well due to carbon buildup from the improperly size injectors. I really still don't understand how these injectors are not under a recall.

 

The Fit is a low cost car to begin with and Honda's profit margin on it is probably not that great (part of the argument for them cancelling it in North America). The high cost of replacing everyone's injectors would probably wipe out the profit that Honda made when they originally sold the cars new. How many car companies stay in business selling cars for a loss? I can't see a recall ever happening for that reason, but I do think they could have, and should have gone the route of issuing an extended warranty on the injectors. Only a certain number of injectors would have had to have been replaced over time and Honda could probably have absorbed that cost and mostly maintained their reputation. But noooooo ...