yet another injector question

[VeloceDrift]

so after putting in my 370s again my car only runs on three cylinders at idel and when i accel it runs normal. also when i decelerate my air fuel no longer leans out but instead stays a steady 11ish-12ish. any ideas?? thank a lot for all your endless knowledge!

[240sxvaj]

If your car is only running on 3 injectors then it should idle like a hot rod, sounds real mean. make sure all the wires are plugged in. You probably have a bad injector, get a shop to flow test it. What is your fuel pressure reading at?

[VeloceDrift]

no fuel pressure gauge:( the issue is that i had these ones in earlier today but the guys on here said i should use the stock ones with an FMU because it will not run so rich while driving so i put them in and it turns out that the seals were bad so after a day of draining all the fuel out of my motor and swapping the fresh gas out of my oil pan with fresh oil i put the 370's back in but now it runs on three only when ideling. lol i pulled up next to a civ on the way home and he was like wtf?? then the light turned green and he peelled out. then i punched it through second.. smoked him horrible for a second and slowed down.i think it confused him.

[WDRacing]

Could be a spark issue...

So you don't know what the fuel pressure is?

[sviellvoicae]

hmmmm i will check spark. i am not sure where the pressure is but i will find out. when i boost my air fuel is right on the money, around 11.8-12.3. its only at idel is where it drops to three cylinders. would a bad injector seal cause that?

^^^^ sorry this is my buddys name but this is indeed Velocedrift

[WDRacing]

Is your car tuned at all?

[240sxvaj]

doesnt sound like it's tuned at all.

[WDRacing]

Then that may be the friggin problem...to much fuel won't ignite...hence the dropped cylinder. I'm guessing he's close to ruining the motor...

[VeloceDrift]

I already said a couple of times that it was running fine up untill i messed with the injectors. Im not a moron. I have a Wide band and for the most part i have a great air fuel ratio. All i was woundering is what the problem may be. Its not the fact that my car is not tuned unless you can tell me that my car all of a sudden decided it didnt want to run with the 370cc's because it was running fine with them before. Just a little rich.and i do understand that i need to tune my ECU. That is coming real soon

Then that may be the friggin problem...to much fuel won't ignite...hence the dropped cylinder. I'm guessing he's close to ruining the motor...

[WDRacing]

I already said a couple of times that it was running fine up untill i messed with the injectors. Im not a moron. I have a Wide band and for the most part i have a great air fuel ratio. All i was woundering is what the problem may be. Its not the fact that my car is not tuned unless you can tell me that my car all of a sudden decided it didnt want to run with the 370cc's because it was running fine with them before. Just a little rich.and i do understand that i need to tune my ECU. That is coming real soon

If your car isn't tuned, then you DON'T understand. Do you have any idea what that much fuel does to your cylinder walls? Your oil? Your bearings and cams when they are coated with dilluted oil?

On boost the car runs ok....yeah but every other time it is running like crap. Anything under 11 is very bad. I'm not trying to be mean here bro...I'm saving your motor.

So yes...all of the sudden your car can run like crap...it's what happens when something is done wrong and driven for any length of time.

WD

[VeloceDrift]

no i do understand that tuning is the most important. I already blew one motor for lack of fuel and was not aware that the 370's needed tuning. I am already about to send my ECU out now that i know. Im going to put the 270's back in tommorow. I also know that you know what you are talking about because i have read plenty of things from you that has helped me out. I was asking about the injectors because my car started doing this when i was messing with the injectors so i wanted to fix that issue before anything else.

[VeloceDrift]

So i did put the 270's back in today and it i running fine. sorry to be so testy i just get frustrated when my car quits running right. thnks for the info