ka24e engine trouble

[fabios s13.5]

so my s13 has some problems but i cant figure it out. wen i 1st bought it it had a timing problem i fixd that got it started but it will not idle it just shuts off unless you keep on the gas. the engine will olny rev to 4k rpm and does it slowly so i have driven it once when i drove it at full throtle it got to 45mph, after this drive it will not go if i put it in gear it dies. also the engine shakes realy bad

wat ive done

replaced connecting rod bearings

new plugs nd wires

set timing

new fuel pump nd filter

compression test

chekd internals

[jonas92]

this is kinda wierd... but what octane u runnin? cuz when i put 93 or higher mine wont idle it ticks like hell and runs real s***ty ... if i run reg u lar it is fine... maybe urs is more extreme?

[carterdriftscrazy]

Thats true thats true.. i run with regular and when i changed up to supreme for smog, it acted different. Try draining the fuel you have in it and put in some regular.

[fabios s13.5]

i did put new gas in it regular cuz i thought the gas in the tank mite have been bad. still nothing it has to be some sort of sensor but theres no way to pinpoint which one it isnt throwing a code either. i even pulled the entire ecu harness to check for cut wires ect and correct wiring of injectors. another thing is when i put the new plugs in i started it once then pulled one of the plugs out nd it was black almost like it was burt up. i tried taken it for another drive i hav to rev it up to put it in gear and keep on the gas it went 5mph full throttle and now will not move it jus dies.

so wen in park or nutral i hit gas to start it struggles alot nd shakes once its started (gas always applied) i rev past 2k rpm nd it runs smoothly but will not pass 4k rpm

[fabios s13.5]

something else interesting. so one of the times i started it my buddy sprayd brake clean in the intake (flamable) it idle at 1000rpm smoothly no motor shaking but after 2 sec it shaked then died

[jonas92]

mine used to do the same...check all ur vacuum hoses for leaks cracks ect...crank the car and keep it running under the hood take the brake cleaner or either and spray hoses/connections that you think are cracked or rotten and if it idles up then replace it...i checked mine and allof em were good..but just start pullin hoses off and plug it with your finger if it idels up then make sure the conections to this hose are good/pulling vacuum.