Toyota Nation Forum banner

1 - 4 of 4 Posts

·
Registered
Joined
·
2 Posts
Discussion Starter #1
I picked up my first 22re powered toyota pickup 4X4 a couple years ago for $1800. Interior was really quite good considering its age and was very very little rust that i could see. Exterior was not perfect but decent as far as i was concerned. Clear coat almost gone on the hood and coming off the drivers fender. A couple dents here an there. Iv been working on it every now and then since then. Not a ton of work, im into the truck about $3k at this point. Do all my own work. Always wanted one of these trucks when i was younger. I had someone come to my work a couple weeks ago and offered me $5500 for it. I didnt sell. They actually came back hoping i would reconsider.



Anyway not long after i got it i yanked the intake to clean it up. Lots of black carbon build up inside. While doing this i saw injector upgrades to a 4port design. Bought some Bosch 0280150556 / fote-d5a injectors in a kit on ebay for like 70 bucks. I really liked the way they preformed with the one exception that the engine when warm does not like to start. I was aware that they sprayed a bit more fuel than the stock injectors. Been bugging me for awhile so couple weeks ago i swapped the stock ones back in. Im sure they are as old as the truck. I did clean and put new screens and tips on them. But idle is erratic as well as rpm speed. Also lost the constant torque though out the rpm that the 4port injectors had. Cant say its lost HP but engine isnt as happy as it was.



I spent a couple hours last night looking at injectors and i see conflicting info on how many CCs a min the stock injectors provide. But the numbers i have seen are less than the 230 CCs i have been running.



Looking for advice on what is the best 4port injector out there for the job? How many CCs is too much? Personal experiences?
 

·
Registered
'84 2WD Pickup
Joined
·
379 Posts
Hi, and welcome to the forum.

I can't speak from experience, as my Hilux is carburetted. But since the fuel flow rate is controlled by the ECU to maintain the stoichiometric fuel/air ratio, it really shouldn't matter. Even at the top end, engines are usually run out of air before they're limited by fuel flow.

But the ECU does learn. I wonder whether the rough idle is just that your ECU hasn't yet dialed in the new settings for the change in injectors? Or possibly unequal fuel delivery among the four injectors? I don't think the ECU has the ability to learn on a cylinder-by-cylinder basis.
 

·
Registered
Joined
·
2 Posts
Discussion Starter #4
Thanks for the welcome. The only problem i had with the aftermarket injectors iv got is wrong fuel flow at startup. The problem is that when its warm outside it takes a lot of cranking and opening the throttle to get it started. I dont like that. Yes when the system goes into closed loop it runs perfect.



The whole efi is extreamly antiquated on these engines. Newer injector designs do a much better job of atomizing the fuel which leads to better performance. Looking for stock flow but better. At startup the pcm is following programming and with higher flow injectors it floods the engine.
 
1 - 4 of 4 Posts
Top