I have one injector on my ca18det swap that does not want to spray. Opposed to replacing the injectors, I would like to hear of any remedies that may get the existing injector to work again, without removing from the car. The engine hasn't been started for atleast 14 years till I got it, so I'm hopeful I may be able to revive the injector.

Here is what I have done, and what I'm going to do.

Using a mechanics stethoscope, I can hear the injector ticking, but it has a faster, shorter tick than the other three injectors. Most likely, the plunger is bouncing off a clog.

Today, I purchased octane booster, and fuel injector cleaner and poured each into the gas tank. I only have about 1/4 of a tank of fuel, so I'm hoping the less diluted additives will be more potent and remove the clog. I didn't have time to let it run today, so I will let it sit till tomorrow before I start it.

Tomorrow, I'm going to let the car idle for a bit to mix up the additives in the tank. The car doesn't do so well when I try and drive it, its shudders and backfires far to much to be tooling around town. So I plan on jacking up the rear wheels, and give it throttle under no load to try and break the clog loose.

So this is my plan, if anyone has a better idea of how to remove the clog while the injector is in the car, please let me know. I'll let you know how it works out. Thanks for any help!

----- How Injectors work ------

The Injector
A fuel injector is nothing but an electronically controlled valve. It is supplied with pressurized fuel by the fuel pump in your car, and it is capable of opening and closing many times per second.


Inside a fuel injector

When the injector is energized, an electromagnet moves a plunger that opens the valve, allowing the pressurized fuel to squirt out through a tiny nozzle. The nozzle is designed to atomize the fuel -- to make as fine a mist as possible so that it can burn easily.

 

I would just 4 get brand new injectors. they are an extremely important part of the combustion system and need to be propperly maintained/replaced. You can order some new injectors from detaschwerks and send your old ones in for about $75 return. At the very least you WILL need to remove the faulty injector and have it checked over/flow tested. make sure all your electrical contacts are good

 

YOU'RE SUCH A NOOB!!! HE DOESN'T HAVE TO BUY INJECTORS, JUST BLOW REALLY HARD INTO THE END!!!! ROFLOL!

Just kidding guys . . .yeah +1 for buying new injectors, they're really not that expensive it bought used, and since all you need is one, lol, that means even if one of the 4 doesn't work, you still have the one you need.

But I remember an RX7 friend of mine telling me that when he used to race his turbo BMW that he would use kerosene to clean out a clogged injector, just let that bad boy soak for a second. I have my reservations about this because I don't know what the effects of kerosene on plastic are.

I know that if you have a locked up or rusted differential or anything on your engine needs to be clean, kerosene is the way to go, and he builds all the time, so I would try this out. Kerosene can be purchased at almost any hardware store. Probably like 12 bucks for a nice sized can!!

Hope it helps and good luck mang!!!

-Dave

 

i made a "thing" i guess you'd call it to clean my injectors. it's basically a 6" pvc pipe with a male air fitting on one side and a 1" long fuel line hose.

here's what i do. i'd secure the injector to the hose on the "thing" pour fuel injector cleaner into the "thing". connect the "thing" to my air compressor set to 30psi. run 12v to the injector until a fine mist is sprayed.

i'd post a pic of the "thing" but it's been years since i've used it so i don't know where it is.

the kerosene idea sounds good to me. but rather than soaking the injector i'd put a few drops into it, then a few more then reinstall it and run the car and see what happens. worst case scenario you have to buy an injector.

 

Thanks for the help guys, highly appreciated. My idea of cleaning the injector wasn't successful to say the least.

I found this list of injectors on another forum I believe may be helpful to anyone having injector problems. The ca18det uses top feed, low impedance 370cc injectors, similar to DSM 1989-94 nonturbo Talon/Eclipse which are also top feed, low impedance but 390cc. I found a low price for a set on eBay that I may pick up and try for replacement. Thanks again for the help, I'll we'll see how those injectors work out.

Here's the list of Injectors:

Top Feed
Engine Style Size Impedance* Years / Models
Nissan KA24E Top feed 260cc High S13
Nissan CA18DET Top feed 370cc Low S13
Nissan RB20DET Top feed 270cc High R32
Nissan RB26DETT Top feed 440cc Low R32/R33/R34

Mazda FC NA Top feed 460cc Low 86-87
Mazda FC NA Top feed 460cc High 88
Mazda FC NA Top feed 460cc High 89-91
Mazda FC turbo Top feed 550cc Low 86-87
Mazda FC turbo Top feed 550cc High 88
Mazda FC turbo Top feed 550cc High 89-91
Mazda FC NA Top feed 680cc Low 84-85

DSM 3000GT/Stealth turbo Top feed 360cc Low 91+
DSM Talon/Eclipse nonturbo Top feed 390cc Low 89-94
DSM Talon/Eclipse 1G Top feed 450cc Low 89-94
DSM Talon/Eclipse 2G Top feed 450cc Low 95-99
Mitsubishi Evo Top feed 510cc Low Evo 1-Evo 3
Mitsubishi Evo Top feed 560cc Low Evo 4+
Subaru WRX Top feed 420cc 02+
Subaru JDM STi Top feed 525cc 99+??

Toyota 3S-GE Top feed 295cc High
Toyota 7M-GE Top feed 295cc High Cressida, Supra mk3 NA
Toyota 2JZ-GE Top feed 315cc High Supra mk4 NA, SC/GS/IS300
Toyota 3S-GE Top feed 315cc High
Toyota 7M-GE Top feed 315cc High Cressida, Supra mk3 NA

Side Feed
Engine Style Size Impedance* Years / Models
Nissan KA24DE Side feed 270cc High S13/S14
Nissan SR20DET Side feed 370cc High S13/S14
Nissan SR20DET Side feed 480cc High S15
Nissan RB25DET Side feed 370cc High R33/R34
Nissan VG30DETT Side feed 370cc High Z32
Infiniti VH45DE Side feed 370cc High All Years
NOTE: 90 - 94 Z32 uses a style of injector that is non-compatable with KA fuel rails (still sidefeed), while 95 - 96 uses the same injector as the RB25DET and SR20DET, etc.
Mazda FD Side feed 550cc High 93-98
Mazda FD Side feed 850cc High 93-98
Mazda 20B Side feed 550cc High JDM Mazda Cosmo?
Subaru JDM STi Side feed 550cc (565cc?) High pre 99
Subaru STi Side feed 565cc High 03+

Toyota 7M-GTE Side feed 430cc (440cc?) Low Supra mk3 turbo
Toyota 2JZ-GTE Side feed 550cc Low Supra mk4 turbo
Toyota 3S-GTE Side feed 430cc (440cc?) Low MR2, 91+
Toyota 4A-GZE Side feed? 365cc Low MR2, MK1
Toyota Celica GTS Side feed? 310cc High 2000+
Toyota JDM 1JZ-GTE Side feed 430cc Low Chaser, Supra mk3?
Toyota JDM 2JZ-GTE Side feed 430cc High?* Supra mk4 turbo
Toyota JDM 7M-GTE Side feed 430cc Low Supra mk3 turbo
Ford Turbo Coupe ?? 30lb (~315cc) Low 86-89
Ford Turbo Coupe ?? 35lb (~365cc) Low ??
Honda Prelude (H22A) ?? 345cc Low 92-96 VTEC
*Impedence
Saturated = High Impedence
Peak and Hold = Low Impedence

 

Yeah bro, you can get like a whole set of injectors for like 200 bucks off of ebay from an RB that would work just fine. OR . . .after doing some digging for ya (just because I love Club240 and it's members) I found a few old RB and VG engine parts that actually were letting go of their injectors for pennies on the dollar.

You should really give Ebay Motors a looksee . . . .^_^

-Dave

 

Already did bro, but the problem with those injectors are that they are rated at 444cc, opposed to 370cc. I'm not ready for that upgrade yet, which would require an updated ecu, larger MAF and prolly something else I'm forgetting.

I found a good looking set of 390cc injectors off a 1990 non turbo eclipse for $33 ship on ebay that I'm going to try out. Also, I found a company that will clean injectors at $17 a piece, which is where I'll prolly send my existing injectors.

Thanks for the heads up though, I'll let ya'll know how the Eclipse injectors work out for me.