Honda Previews New Engine Lineup: Direct Injection

Not open for further replies.
Maybe they'll get it right. Or it will be another problem searching for a solution from a different automaker. It really is a shame technology took a turn in this direction. JMO
I'm more optimistic. i feel certain that technology will triumph over this issue and DI will become even more commonplace. But at this particular time I would not even consider a DI car
The only way it is going to be solved is by more people working on it. As the world's largest engine manufacturer, you can bet that Honda has been working on it for a long time, and that they have some clues about the issues. But the reality is this - so long as a car can go 100-120k without issues, it is past any warranty timeframes, and people start to soften expectations. I'm fairly confident that even today's DI can do that. Add a port injector like Toyota does - don't even need to run it 100% of the time, and deposits could likely be very minor. The best way to solve these issues is to invest in the knowledge to do so, and Honda is a good manufacturer to be getting real world data on it.
It is what it is. Most here have seen the deposits from the previous generation Audi's and Mini's etc. The fact is the manufacturers now using DI is growing, and as the recent article regarding the early adopters of DI, there does appear to be progress in the technology. While I avoided it previously, I'm keeping an open mind for the future. Is every manufacturer now going to DI wrong, and learned nothing from the previous generation? The current generation from all the manufactuers will tell. IMO, the jury is still out. As for Honda's move to DI, it adds another manufacturer to the list going to DI. (Note the comment by the author in the link below) The Edmunds article linked below, goes into greater detail regarding Honda's DI and Diesel engines and CVT technology.
Intake valve deposits are nothing new. Diesels have been running DI with tons, as compared with pass cars, of EGR which really creates deposits. There are things that can be done with valve design to help minimize these deposits and lessen the impact when they do form.
No Honda diesels in the US yet. I remember one was supposed to be here in 2007. I think the rule with Honda/Acura is: wait until it is for sale on the showroom floor. They announce stuff, but....
I agree that DI is here to stay, what bothers me is the consumer is the unpaid tester of the product and some are suffering as a result. I will try and avoid the technology as long as possible, but unfortunately I will be in the market for a new car in the not so distant future. I don't see these problems getting ironed out anytime soon. It's a sad really for anyone getting stuck with one and having problems. I'm sure the buyers of the first generation DI Honda engines will have their fair share of problems too. I have an open mind but the more info I gather the less faith I have in the current DI offerings.
Without a fuel/cleaner wash, the valves will get dirty. DI can improve efficiency, so it's here to stay. And carmakers and Gov'ts like the efficiency.
I hope their new CVT is lifetime fill. That's how most consumers treat transmissions anyway. Any CVT that has mandatory fluid changes is likely to be trouble.
We won't see true MPG increases until the EPA drops its ridiculous NOx standard to allow motors with lean-burn tech back on the market.
Mazda is doubling down with their new "SkyActiv" package taking their DI engine to 14.0 compression ratio. My four year old Speed3 is doing fine but it's only got 22,000 miles on it.
Originally Posted By: The Critic
I hope their new CVT is lifetime fill. That's how most consumers treat transmissions anyway. Any CVT that has mandatory fluid changes is likely to be trouble.
While many (most) consumers may treat it that way, requiring a fluid change makes it at last a *little* more likely that the average person will do it. Advertising it as lifetime fill doesn't make that much sense to me. The CVT on my car has 60K intervals, and by and large it's not a troublesome transmission, even for those who never change the fluid... Regardless of the interval they specify, if they don't make fluid changes relatively simple to do DIY, it would be a deal-breaker for me. That's one area in which Honda have so far been pretty good compared to most manufacturers out there: fill plugs and drain bolts.
Maybe sticking with Top Tier fuels will help a little? But I agree, I don't want to be the unpaid lab rat either.
I like Toyota's direct + port injection method. Sure the extra injectors cost more, but you know there won't be valve deposit issues, and IMO that's a worthy tradeoff. Although it doesn't seem like GM and Ford are having as much trouble as VAG has had.
Originally Posted By: Nick R
Like I've said I haven't heard any problems with newer GM DI engines, and they've been out for a few years.
Exactly. I don't see what's so new with DI? Some manufacturers like Isuzu for instance, offered a 3.5L DI V6 back in 2004 for the Isuzu Rodeo. The engine was great and ahead of it's time aside from Isuzu USA dwindling to non existence shortly thereafter. Joel
Not open for further replies.