coil/ignitor issue?

[ca18det_boy]

Alright here's the skibby....S14SR in an S13 chassis. Car ran perfectly fine initially. I threw in some 480cc S15 injectors and the car still ran alright aside from being on the rich side. Wired in an SAFC2 and Z32 MAF and all hell broke loose. The car seemed at the time to be running in limp mode, wouldn't easily go over 3k and took a full tank of gas to go 60 miles back to the house blowing smoke all over the place. So I was trying different IN/OUT settings to find out if that was messed up. Cylinder 2 completely filled with gas and temp hydro locked the motor. Once I got that all cleared up and out of the way I changed the plugs and tried figuring out the problem again. After awhile I pulled the plugs again to see what was going on. Cylinder 2 was getting more gas in there again. So with a thought of possibly 2 bad coils I switched the front 2 to the rear and vice versa. Since I don't really have the stuff to test the coils I got my buddy to pull the coils one by one till I noticed something. (BTW the car won't idle at all) He pulled 1+2 and there wasn't any difference in the idle, once he got to 3+4 car REALLY wanted to die. So coils on 3/4 are good, 1/2 no fire. Tried switching the ignitors with a known good one.....no change still not firing on cylinders 1+2.

So pretty much tested the MAF, coils, and ignitor...all good. Took the SAFC and MAF off (to put it in limp mode) no change. Any ideas?

[ca18det_boy]

anyone?

[Blown240sx]

Well A your running Bigger injectors on a ECU that wasnt made for those. Your stocks are 370cc so your car is going to dump more fuel. Then you put in a SAFC and MAF. The MAF if not set right will f*ck thingsup and if the SAFC is wired wrong you could cause serious problems even hurt the ECU.

You need to go bad to stock everything and reset your ECU. After that if it runs ok install 1 thing at a time and test it. Also with the SAFC you may want to drop the fuel down about -10% across the board to help relieve some of the excess fuel.Also when a cylinder dumps fuel and none of the others you may have torn or pinched the O ring on the injector.

But I suggest you do this in orderGo back to full stock everything and reset ECu and see if it runsIf not replace plugs with new plugsIf still not running pull a plug at a time and test it by pushing the plug against metal and turning the car over and see if it consistanly sparks (do this fo every cylinder)If not check the O rings on the Injectors

If you do get it runningInstall the SAFC first and run the car see if its fineThen install the MAF and test it to see if the car is fineLast put the 480cc injectors back in and turbn the SAFC on low and hi throttle to -10% and see how it runs.If you get a problem along the way then you know what is messing up.

[ca18det_boy]

I actually JUST got it running. The injector O-rings on cylinders 1/2 were blown out and the MAF wiring was wrong. I did it according to HT and JWT, for some reason that wiring didn't work for me. I just switched the 12v and 0-5v wire and it solved everything!

I'm so happy right now but I still can't drive it....since its been sitting I switched rims and the new ones are rubbing the coilovers.....time to wait for the spacers from our buddies at enjuku!