CA18DET Injectors

[Armendo89]

I want a set of stock CA injectors. Are there any vehicles I can cross reference at autozone to get them? if not, is rebuilding them an option? Does anybody have any recommendations on what I should do? All feedback will be helpful.

Thank you,
Anthony

[themadscientist]

What's wrong with yours?

[float_6969]

http://www.deatchwerks.com

[Armendo89]

Here's the deal... The motor had a spit to it, this car was someone elses project so I went through all the stock sensors and replaced them with new ones and brought the motor as close to stock as I can get it. The motor sounds 10x better and has a clean idle but now, if I rev the car in neutral and hold it at 3000 rpm it spits like its being denied fuel. The car sat for a year and a half while I was deployed I just got home and I want to get the car ready for the car shows and the track. I ran 93 octane and half a can of seafoam through it to help clean out any gunk that might of been in there and I suspect that I may have a bad injector. I have been going through the whole car day by day cleaning and replacing anything that I feel could need to be replaced andor causing problems. Here is a quick mod list
-rebuilt CA18DET with stock internals
-GT2871R turbo (7 PSI until I get the car running properly the car is tuned for the 7 PSI with a SAFC 2)
-Spitfire coil packs & ignition harness (brand new just installed the other day)
-I sourced a CA18DET MAF from a friend in Australia in like brand new condition (installed the other day)
-yesterday I cleaned out the IACV (to clean up the idle)
-greddy front mount intercooler
-3'' turbo back Apexi N1 exhaust
-1 piece aluminum drive shaft
-welded diff
-AEM wideband
-SAFC 2
-Greddy turbo timer
-Nismo FPR
-Whalbro 255 lph fuel pump
-Nismo short throw
-stage 3 clutch & light weight flywheel
-300z brake swap
-Tokico struts and springs
-silvia front end conversion
-The MAF has a blow through set up on the cold pipe
-I have a 3 inch intake on the turbo made out of black PVC I tapped into the side of the PVC and ran a line back to the head just like stock

[themadscientist]

Have someone in the car doing whatever makes the car act stupid and pull the injector plugs one by one until you find the one that doesn't make it worse. Test the injector and the plug there and see if the plug is providing signal and that the injector impedance is correct.

I suspect, however, that your problem is here.

-The MAF has a blow through set up on the cold pipe

Put it in front of the turbo. Reset the computer and see what happens. That ghetto blow-though AFM s*** is dumb. It was cute when we were using flapper door AFM, but hot wire sensors are a hell of a lot more sensitive.

You have a computer and an SAFC that is tricking it, both that think the signals are based on an AFM that is out in the open air. Too many variables there.

[Armendo89]

I didn't even think of that thank you, I am going to try to put the AFM in front of the turbo again tomorrow and see if that corrects the issue. The reason I had the blow through set-up is because when I pushed in the clutch the car would stall out. When I switched to the blow through set-up it corrected the problem. On the same note I was running the wrong MAF back then (it was running a ka24e maf) Im running the proper MAF now so hopefully I wont have that issue, but say worse case scenario what do I do if the stalling issue arises again?

[themadscientist]

In that case check your SAFC settings. You have to tell it which AFM you have and those two AFMs might have a different code to set.

A miss could also be an ignition problem. A misfire is just a failed combustion event and of the three things neede for combustion, fuel, air and ignition, the latter is the easiest to fail. You know you are getting air, and you know you are getting some fuel, but how do you know the spark is strong? I know you have name brand stuff, but that doesn't mean it's working. You are experiencing misfires when revving in neutral. That's virtually NO load. Even the weakest injector should be able to feed that requirement.

Do the same check where you unplug during the event, but also on the coils, one by one. Do the same check on the coils, the plugs and the wires. The offending cylinder's plug will likely show it.

[dhen]

I have a used set of injectors I can sell if you want them. You can email me at [email protected] or text at (210) 862-7683.

[Armendo89]

I want to say thank you to "themadscientist" Your advice got my car running properly. Once I changed the settings in the SAFC the car revved cleanly to 8000 rpm with no break ups. I moved my MAF back to the intake before the turbo but i have to extend the wires and i mocked up a new coldair intake out of abs pipe. I will start the car in a couple days once I fix my hot pipe and my intake is complete. And once again I want to say thank you. Dhen, as for those injectors I sent you a txt hit me back with a price when you get a chance. Thanks guys.

[dhen]

Here's the web page I told you about:

http://www.witchhunter.com/

Darian

[Armendo89]

Thanks bro

[themadscientist]

Well, that's one CA18 I didn't break!

Let's see if I can fix mine.

[Armendo89]

Whats wrong with yours?

[themadscientist]

I'm still troubleshooting it, but I think I have the problem nailed down.

[Armendo89]

I think you need a battery bro haha... Are you doing a rebuild?

[themadscientist]

Don't know yet. I have an RB25 that is still together and was running fine when pulled, An FJ20 that might still hold some compression and a CA18 that has almost all the machine work done and just needs to be put together.

I might do the 25 just because it's the quickest route to a running car and has some nifty twists to it.

[mdb4879]

FJ20!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[themadscientist]

Hood wont shut on the FJ, but that doesn't mean I wouldn't do it. I already know how to get it in there and when I mocked it up I had a downpipe made to bolt up to the T04 HKS kit I have. I also have some sick monstrosity of an intake manifold with 8 injectors and a Q45 throttle.

[mdb4879]

Hood wont shut on the FJ

I thought that's what they invented the Sawzall for, lol

[Armendo89]

That sounds like a mean set up bro, personally I would throw the RB25 in just because it has more displacement and capable of putting up some crazy numbers the only downfall I can see is that the RB25 is its heavy and may put a lot of stress of the front struts. On the plus side with the motor out this is a good opportunity to paint and clean up the engine bay
Now I have moved the MAF over in front of the turbo and I may be prematurely freaking out but the car is breaking up when I rev it with no load on the motor. today I started it, it revved to 5000 rpm broke up and shot a fireball out of the exhaust I have a couple solutions. 1) I have a new set of spark plugs to go in 2) I may have miswired my MAF because the owner before me repined it to the ecu but used all red wires so I have to follow the wires back to the ecu to see whats what. 3) send my injectors out to be serviced. 4)Use all the advice you guys can give me to fix this issue and get my car running properly.
This is very frustrating and I'm running out of ideas please throw me a couple fresh ideas to sort this out.

[Armendo89]

I double checked and rewired my MAF to make sure its wired up properly and getting good signal. Still no luck same symptoms

[themadscientist]

All red, eh?


If it was wired wrong, I seriously doubt it would run at all much less let you spin it up that high before falling off. You have the worst sort of problem, chasing someone else's mistake. It's hard enough when it's bone stock, but start adding "tuning" and things spin out of control quick.

I really don't think it's fuel delivery, but it's hard to determine. Have you tried driving it? I had a GTS-4 one time that would fall on its face as soon as boost was starting. It turned out to be a bad fuel pump. It felt like hitting a wall of jello. If it is fuel delivery, I would suspect a drop in pressure before an individual injector.

[Armendo89]

The fuel pump is new its a wahlbro 225lph. But I'm going to dig into the ignition a little deeper. Do you know the correct way to wire a (I think its a q45 ignitor) I have 2 extra wires hanging off of it that aren't connected to anything. I suspected that was because it was off of a v6.

[themadscientist]

A Q45 is a V8, there should be no unused wires because supposedly each banks' igniter is a CA18 unit. You may have an RB unit there if you have extra wires. That could be a problem. Flip it over and look on the bottom. It's been a while since I messed with one, but I seem to remember RB igniters had "1 2 3 4 5 6" on the bottom on one of the plug ends.

[Armendo89]

Do you know where I can find a wiring diagram of some sort so I can check it or should I just try to find a ignitor for a ca18de/det

[themadscientist]

Show me a picture of your igniter.

[Armendo89]

I'm away with the military for the weekend so I'll take a picture on Monday when I get home.

[float_6969]

I'll show you a picture of my igniter....

[Armendo89]

got combustion?

[Armendo89]

I found a ca18det ignitor on eBay for 20 bucks so I figured since I replaced everything else I might as when grab it and throw it in and see if it makes a difference. Once I install it I'm having my buddy come over and help me check the timing with a timing light. After that I'm going to replace all the vacuum lines and make sure there are no leaks. I'm hoping to have all issues resolved by the end of the week permitting all the parts I ordered get here in a timely manner lol.