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!help Misfire & Flat Spot Rb25de Neo!

JMUZZA_R33

By JMUZZA_R33,
in Engines & Forced Induction

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JMUZZA_R33 Apprentice

JMUZZA_R33

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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!

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https://www.sau.com.au/forums/topic/455130-help-misfire-flat-spot-rb25de-neo/
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  • 2 weeks later...
JMUZZA_R33 Apprentice

JMUZZA_R33

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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!

  • 6 months later...

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