PDA

View Full Version : KA24E bogging, missing, and backfiring

DAT510
11-28-2012, 09:46 AM
I was driving my S13, when all of a sudden I started losing power, almost as if it weren't running on all cylinders. I punched it figuring something got caught in the exhaust or something and it'd blow it out. The RPMs climbled slower than they did before, but I could still drive it. Every now and then when I'd shift it'd buck as if it wanted to stall, but I could drive up hills and stuff fine. Then I went to stop and the car died, I tried starting it but the whole car would shake real bad and the car wouldn't start. I cranked and cranked, it would start once every once in a while, and it would idle fine, but once you gave it some gas it would want to die, unless you kept the throttle pinned. After making sure my MAF, TPS, and O2 sensor and timing was good, I tried starting it, and It started! However, now it seems like fuel is being cut off or something because getting it to to 3K rpm is damn near impossible, and once it does get there the engine sounds like its missing, and starts backfiring.
http://www.youtube.com/watch?v=r92UccjoWYA&feature=plcp
DAT510
11-29-2012, 06:00 PM
Help :ugh:
2tonecoupegrl
11-29-2012, 06:05 PM
If you cant get it past 3k then its most likely your maf or the wiring going to it.
DAT510
11-29-2012, 06:09 PM
If you cant get it past 3k then its most likely your maf or the wiring going to it.

It'll go past it, eventually, I have a video in the original post
KiLLeR2001
11-29-2012, 06:12 PM
Check for vacuum leaks. Check ECU for codes.
DAT510
11-29-2012, 06:12 PM
keep in the mind, the camera shaking at around 3k is because the motor is causing the whole car to shake really bad.
DAT510
11-29-2012, 06:13 PM
Check for vacuum leaks. Check ECU for codes.

No vacuum leaks, every hose is fine. haven't checked ECU yet though. I'll give that a shot
iVanRoz
11-29-2012, 06:34 PM
Clogged cat?
DAT510
11-29-2012, 11:48 PM
That's what I thought originally, but exhaust flow seems fine. I'm gonna check the ECU tomorrow see if it gives me any codes.
shift_down
11-30-2012, 04:22 PM
If your fuel pump is bad, it will do that. It will try hard to get fuel to the motor but sometimes it can't get enough fuel there so it bucks and stalls and loses power due to not enough fuel.

Also if your injectors are clogged real bad it can do that.
It sounded like an maf problem, but you said you can rev past 3500rpm, so its not maf.

Check codes and let us know. Also when it isles, does car shake at all? What about the shift knob? Does the shift knob shake excessively at idle?
shift_down
11-30-2012, 04:23 PM
If your fuel pump is bad, it will do that. It will try hard to get fuel to the motor but sometimes it can't get enough fuel there so it bucks and stalls and loses power due to not enough fuel.

Also if your injectors are clogged real bad it can do that.
It sounded like an maf problem, but you said you can rev past 3500rpm, so its not maf.

Check codes and let us know. Also when it isles, does car shake at all? What about the shift knob? Does the shift knob shake excessively at idle?