h22speed

ka24de bad injector after driving hard?
so a few weeks back i had an injector in cylinder #3 go bad and i replaced it my self and the rough idle/ no power issue was solved. so last week im driving home and was doing a little spirited driving, nothing crazy, no redline shifts, and my injector in cylinder #1 goes out pretty much the same symptoms as when #3 went out. so the next day i have to work early so i dont get a chance to fix it and being my only car... had to drive it. so i baby it to work and right before i turn into work #1 starts working normally again (after a tank of gas and injector cleaner). so its been running fine all week until tonight, when after doing a little hard driving, fuel injector #1 is out again. the injectors will all be replaced as soon as i get a decent paycheck, however i am concerned with what may be c ausing this issue, maybe a bad fuel filter letting crap into the injectors? i had a compression test done and cylinders are reading fine, but i dont want to deal with an engine on pms after i give her a little abuse. please help

update: car is running back to normal somewhat as far as running on all cylinders, however i noticed today that there seems to be a lack of power between 3500-5000 rpm's, but at about 5200 power literally jerks on almost like a vtec and carries through up to 6500 where i usually shift.


car info:
ka24de unknown milage but with good compression
176k on chassis and maybe engine but not sure
fuel injector #3 replaced after clog/ fail 3 weeks ago
perhaps original fuel pump/ fuel filter
new plugs/ wires/ dist. cap

lok

searched "bad injector"

http://zilvia.net/f/tech-talk/208377...weirdness.html

h22speed

thanks lok... the post looks familiar, mustve seen it drunk and forgot about it. is there anmything to be said about the power "kick" at 5200 rpms? or would that constitute faulty/ clogged injectors?

1slowS13

how is the engine, maintenance-wise? plugs, wires, cap, rotor, o2, etc?

also these cars that we drive are 10 to almost 20 years old, shit goes out all the time.

h22speed

well since i have had it in 2 years ive replaced:
plugs/ cap/ wires
clutch master cylinder/ clutch
pcv valve
starter
fuel injector
and prolly more... but i am curious about the power kick hinting an underlying problem that ill pay more for down the road

i do spirited driving on occasion, never rag or beat on the car, just dont want to be stranded somewhere later... anyone have any ideas?

UNISA JECS

Yea that when the ECU stop pulling timing for knock so after ~5200rpm you get the VTEC effect, its quite common for S13 to have faulty knock sensor wiring. This will not illuminate a check engine light by itself but the code will be stored if there is a problem in the wiring. I get a shit load of experience on this issue.

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Tom25666

wow i have a 93 240 hb ka24de with almost the exact same mileage as yours, and I am experiencing the exact same problem. i wondered what the problem was, but that was the point where i decided enough is enough and ordered an sr20