50% MPG increase

when i was in the engine area of my 05 around that injector rail .. i added some cork layer above the rail .. this traps a tiny amount of heat onto the incoming fuel .. not sure how much but it is closer to fuel vaporization and there is a small increase in mpg at least 1%.

 

You have that theory all backwards.
Pre-heating the incoming fuel is NOT a good idea......unless it is winter in Alaska.
Seriously.
Designers take great pains to keep the incoming fuel from getting TOO hot.
You should NOT defeat those design efforts.

 

There's another option here that we've used on PriusChat before, and it has the advantage that we really learn something about how much the injector replacement really accomplished. It works like this:

1. Somebody who has just replaced the injectors sends the old ones to a service that tests, fully restores, and re-tests them.
2. In the past, I paid the testing and restoration charges, and had the restored old injectors sent to me.
3. We get the before test results, showing how much of a problem they really were or weren't causing for the car they came out of, and the after test results, confirming the restoration.
4. The next person thinking of replacing injectors pays my cost and postage, puts the restored ones in, sends the old ones to the service.
5. lather, rinse, repeat.

It's useful to learn the condition of the old injectors. For example, we had one member, astrolink, who sent the old ones in and the test clearly showed they were awful, and of course the replacement solved the trouble with astrolink's car and there was no question about it.

On the other hand, I replaced a set and sent my old ones in and they were just fine, which was useful to know; in case I was hunting down an issue with the car, it would help to know I hadn't found it yet.

The restoration cost at the time was $20 per injector, plus postage, and that hasn't changed on Rich's web site, and it doesn't look like Rock Auto can beat that by much, if at all ... and from Rock Auto we don't get the test results.

As far as I know, we don't have a set of Gen 3 injectors in this rotation yet. (I still have the last set of Gen 1 / Gen 2 injectors available, but Gen 3 uses different ones).

If the OP in this thread still has the ones that came out of the car and they're not mangled, that would be a good opportunity to start up a rotation for those.

It would apparently take three such rotations to cover all of Gen 3 and 4: it's one part number for 2010 and 2011, another for 2012+ and Prius v, and at least one more number in Gen 4.

 

Th

Yeah, Ill gladly try that out. any site you recommend? Im in LA area if that matters.

Ill get a cheaper 3rd party set for now to send my stock ones out and then swap those back in when they are serviced.

One more question, about coil packs, should they only be replaced with a failure or should I replace them 2010 @150k

 

Are injectors easy to replace? I've replaced quite a few things on our 2012 v (wagon)...and I might just go ahead and replace the injectors for 'fun'. The v is my project car after all...

 

.... Come 'on man ? ! ... We're not talking exh. temps .. or even coolant temps .. just a little cabin heat extra few calories its probably very miniscule but ice cold gas es no bueno .. yeah we all heard about the 'vapor lock' issues in the past ... for carb machines .. i guess this could go to a whole nother site called mpg.com ...

 

Well, the service we were using in the PriusChat-traveling-injectors scheme was Cruzin Performance in Michigan, but if you're looking for a nearby service to have the restored injectors returned to you, there are probably plenty closer to you. Maybe check with the folks in this article? They're in Torrance. (I just checked with Rich at Cruzin and right at the moment his hands are full with something else anyway.)

 

Well ... they're not hard to replace ... but judging by the test outcomes in the Gen 1 / Gen 2 rotation we had earlier, you had about a 67% chance of putting in that time and money to replace four injectors that were just fine to begin with.

They definitely can go bad, as we saw in astrolink's case, and they were making that car run so badly he was about to get rid of it. So yes, worth checking if there's a reason for suspicion. But as 3prongpaul put it:

So there might not be much call for replacing them "for 'fun'", unless just spending that time and money really would be 'fun' for you.

 

LOL IM in Torrance, that works. I just say LA area cause most people haven't heard of Torrance.

Perfect I am in Torrance and will check with them out.

Looks like they are a couple blocks from my work, I can just ride my bicycle to work and drop em off. Awesome!! I bike in 2 or 3 days a week anyways I only live 3 miles from work.

 

Come on yourself.
What I said is TRUE.
You did this under the hood, not in the cabin.......so you don't really know HOW hot that fuel rail might be getting.
This is NOT a good idea.

 

**sho nuf do know it aint be 2 much ..sheet ...
it is merely a couple pieces cork zip tied to top of rail .. kamila harris approves if u wear your mask prior to installing .

 

Brilliant.

 

been running it that way far 70k miles .. i would say it has not hurt operation .... and that is in hot southern climate .. u have only to gain more in a colder clime.

 

You just aren't listening.
Just because YOU got away with doing that does not make it a good idea.
The next guy who tries it might do it a little differently, overheat the rail, blow a seal and start an engine fire.
You can do whatever stupid thing you want but it is irresponsible to recommend it to others.

 

are you pandering to a certain demographic of people? If so, it is working!!!

 

u musta not seen the movie 'gashole ' u musta never heard about da pogue carb ..

blow a seal ? ?? fuel rail seal ? i dont remember telling anybody ' hey u gotta do this' .. i merely mentioned i did it .. it has been working and it made an improvement ..

 

I wish i knew more about cars, at least enough to change out fuel injectors. from what I see on youtube, doesn't look that easy...

 

if it aint broke dont fix rule doesnt apply to prius ! we know the HV battery will become broke and doing maintenance on it will prevent it's early demise ! esp. if u live in a rainy, humid area .. checking the terminals, bus bars and nuts for corrosion before it happens .. that is something to do if the car is prob. over 5 yrs old ...