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SOHC - 2.3L & 2.5L Lima Engines Discussions and Topics specific to the Lima 4 cylinder engines

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Old 04-18-2014
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2.3L Injectors

been trying to remedy the rough idle, dying at times issue with my 96 ranger. I am wondering if i am going to replace the injectors, is there an alternate to the Denso F57E-B2C injectors that are stock? Can i get a slightly better one, maybe one that is a bit cheaper, or more readily found? Any information will/is greatly appreciated.
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Old 04-18-2014
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Injectors can be rebuilt, usually $25-$30 each, exchange.
So you take in(or send in) 4 old injectors and get 4 rebuilt injectors for $100-$120

No, about "upgrades".

Fuel injectors do not fail often, rough idle and dieing symptom would probably not be fuel injectors.
Fuel pressure, vacuum leak or spark would be more likely
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Old 04-18-2014
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HAVE REPLACE WIRES,PLUGS, COIL PACKS, REPLACED TIMING BELT AND TENSIONER(BADLY NEEDED) ALSO WATER PUMP AND THERMOSTAT WHILE IN THERE. I HAD A DIFFERNET POST, AND SOMEONE SAID THEY HAD DID EVERYTHING I HAD PLUS MORE, THEN REPLACED INJECTORS AND IT FIXED IT. I FOUND A SET I FOUND A SET OF IDENTICAL dENSO F573-B2C FOR 139.99. (BRAND NEW).

SEEMS AS THOUGH I HAVE READ SOME PEOPLE PUTTING BIGGER(DIFFERENT) INJECTORS IN. I DID A LITTLE RESEARCH AND HAVE THE NUMBERS TO SEVERAL INJECTORS PAYING CLOSE ATTENTION TO FLOW AND OHMS. CURRENT ONES ARE 14.4OHMS, 175CC/MIN @ 3BAR. WONDERING HOW MUCH CC I COULD SAFELY GO UP?

OR WHERE TO GET PARTS TO REBUILD THEM, THE SMALL FILTER/SCREENS, ORINGS AND PINTEL CAPS. OTHER THAN THAT I CANT SEE WHAT ELSE THERE IS TO REBUILDING THEM, THEY DONT SEEM TO COME APART.
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Old 04-18-2014
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ICM(ignition control module) and it's wires were trouble spots on the Lima engines.
But these usually cause CEL to come on, not always just usually.
Never replace, test
Ohm/volt meters are cheaper than pretty much any part

Seafoam in the fuel tank will clean the pintles and needle valves, I run a can in each of my fuel injected engines once a year, I do notice a difference about 1/2 way thru the tank, should probably do it twice a year but I am cheap, lol.

Here's the deal with larger injectors, this isn't the same as a carb with bigger jets.
You do not control how much fuel is mixed with the air, the computer does.
So if you put in larger injectors, nothing changes, injectors are just not open as long as the originals, too large and engine won't idle.

On first start up with larger injectors you will get rough running until engine warms up and O2 sensors come on line, then computer will learn the open/close time for the correct 14:1 fuel ratio for the new injectors, and you will have the same performance as you did with factory injectors.

So, IMO, not worth it unless you can increase air flow with a better CAM, or even a turbo, but stock injectors can handle most larger CAMs and even some lower boost turbos.
MAF(mass air flow) sensor tells the computer how much air is coming in, so this is the main thing the computer uses to set base fuel/air mix.
O2 sensors tell the computer how close it is to 14:1 air/fuel ratio, computer adjusts injector's "open time" to stay at 14:1.

Last edited by RonD; 04-18-2014 at 10:24 PM.
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