ka24de runs nicer with 91 but still loses power

[driftfreek]

Hi guys, i dont know much about how to diagnose problems so im reaching out for your help.i have a problem with my ka24de. when i used 87 octance my engine would not rev smooth. at wot it lose power for a quick instant, then keep climbing up the rpms then lose power again, then keep climbing, etc. it would lose power 3 to 4 times before i need to shift( at 5800rpms). then i switched to 91 octane and it would run smoother and would only lose power ONCE at high rpms. i tested my tps sensor and its good. what should i do to fix this? whats causing this to happen?

[Pandapants]

what kind of fuel pump, wires, plugs, and gap are you running?

[driftfreek]

gap is oem. pump is oem. plugs are ngk and wires are aftermarket(cant remember the name). but none of those i changed when i when from 87 to 91.

[1337]

check your timing

[g00se]

Originally Posted by driftfreek

gap is oem. pump is oem. plugs are ngk and wires are aftermarket(cant remember the name). but none of those i changed when i when from 87 to 91.

octane would'nt matter if theres a problem, check spark (may have to replace plugs wires cap if its been a while) Fuel (filter, pump, check for leaks at the injectors)

any CELs?

[Nick_04K]

Originally Posted by 1337

check your timing

Bingo


msglength

[napz510]

Possible fuel pump...check on it or if you have spare replace it..

[lenox_240]

Originally Posted by 1337

check your timing

^^^ i agree

[statickx991]

id say timing deff and is ur ecu chipped or anything?

[1337]