!help Misfire & Flat Spot Rb25de Neo!

[JMUZZA_R33]

Hey guys, I've got an R33 with an RB25de neo, my coil packs weren't sparking under load so I changed them to super sparks & they ran great for about a week & I started getting a misfire so I pulled them out checked them, changed plugs & then put it all back and now it misfires when it's cold & misfires every now & then. I've changed fuel filter aswell (had a service) Not sure what it could be. Also have a flat spot after i downshift & accelerate or when I put my foot flat it hesitates. I've searched the web like crazy, can anyone help?

Thanks everyone!

[t5iv]

Coil pack harness, CAS, flooding something, gaskets given way - could be anything. Tried checking codes?

[JMUZZA_R33]

Found the problem all been fixed!

#6 coil pack was misfiring intermittent so I couldn't find it but done a lucky coil test last night & found it!

As for the flat spot, when the previous owner swapped the engine he left the r33 loom & turbo ECU in the car.[emoji50]

It's booked in for a harness & ECU conversion early May!

[[email protected]]

Hi JMUZZA im curious to see what was the problem and if it was all fixed with that conversion

As im currently having hesitation and flat spot issues with my rb25de neo

Thanks