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  1. S

    1jz lean spot/hesitation

    yes, i have bypassed that "j-tube" and "damper"
  2. S

    1jz lean spot/hesitation

    i use normal 98 octane fuel and i have checked inside my fueltank and it looks like brand new. stock lines under car but at firewall changes to braided hose. timing is checked and set with timinglight to aem. i have sprayed silicone spray to intake manifold but couldnt find any vacuum leaks and...
  3. S

    1jz lean spot/hesitation

    i have problem with lean spot and hesitation when pressing throttle pedal. idles fine but afr jumps to max lean and comes back to 14-16 and hesitates every time i try to accelerate. i have changed plugs and coils but it didnt help and plugs are completely white so im running lean. this started...