Redlining

[Hicus]

My 91 doesnt redline. When I step on it it goes up to 4000 then down to 3000 and just stays between. Changed: oxygen sensor, spark plugs (ngk) oil filter, oil, fuel filter, and air filter. Have any of you ever came across this problem?

[240sxAddict]

is it a/t or m/t?

[Hicus]

Manual

[importcrazy421]

wow ive never heard of that. I mean if it can hit 4g then it should be able to go to redline. Could be your injectors but not sure.

[Hicus]

I thought it was the injectors too, so I ran synthetic fuel injector cleaner in my fuel and I still got the same problem. My injectores are all working cause they're clicking the same speed. If I dont get any suggestions I probably will end up taking the injectors out and having the shop clean each one up. I need more info

[kcap122]

mite wanna make sure the distributor is firing right. it could be that its ok for low revs because the timing is roughly ok, but theres a problem at high revs caus ur just a few degrees off or something?

[Hicus]

My firing order is fine, but probably I am a few degrees off. It's not timed. Do I disconnect any sensors before I mess with the distributer?

[nissanfanatic]

www.240sx.org faq will help you.

[importcrazy421]

changing your timing isnt hard but the way i did it i used a special tool thats like a light devise. you dont have to take off any sensors. there is a bolt that is in a slot around the distributor. Once you lossen that you can turn the assembly then you tighten it and check. If you dont have that tool then you might need to get it done by a mechanic. Hope i helped.

[mid_night_blueS13]

i experience that same thing with my car too! is it a ka24e or de? well i got the ka24e i could never get passed like 4000rpm on 4th gear it would probably go up to like 3900 or something like that i haven't figured out wha it was but yeah i used a timing light on my car and its perfect and i still get the prob.. i jus say F it i'm savin to do a sr swap anyways no need to fix the ka for now.. but yeah i was told it could be my injectors but i used an injector cleaner too and still nottin happened.. if u ever find out wut it is share the info and tell me too

[Hicus]

Yeah my ka24de is still doing that shit. I had a friend come over and he said could hear a vaccum leak behind the intake manifold. He was going to spray the last of my starter fluid (cause it wont will not ever start without it) so I said hell nah. He's comming tomorrow with a stethescope and a timing light. It seems like whenever I hear 240 i hear sr20 comming just seconds later. HUH, WHAT ABOUT YOU!

[Hicus]

Is there any vaccum diagrams for my engine on the net?

[90LShatch]

mine only revs to like 5k and like shuts down til i hit the clutch again and starts up again im gonna swap ecu's with a friend and see if that fixes it. i can see why your does that in fourth gear its called a speed limiter

[Hicus]

It's not just my fourth gear it's all of them

[nissanfanatic]

Take off your distributor cap and make sure it is ok and clean the mafs with rubbing alcohol and a q tip.