Hi all. Just bought a buddy’s wrecked 09zx14. It runs and drives just when rolling on throttle between 3500-4500 every gear it will stutter. Kinda like surging really fast. Smells really rich while it’s doing it and occasionally black smoke from exhaust. Has pc5 Brock’s full exhaust and k&n air filter. Other than that it runs fine hauls a** when you want it to. Anyone know?
So far I’ve completely removed powercommander still did it. Reinstalled it. Check coils. Primary resistance was 1.6 on all. Secondary was around 10.9 plugs were pretty carboned up. I pulled fuel pump out took out filter looked like plastic crap and some green looking tape in the filter and floating in tank. Tried to clean it but still pretty dirty and doing the same thing. I have another fuel filter ordered. Any other suggestions?
* Last updated by: littleZ14 on 9/24/2018 @ 9:38 AM *