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Help! R34 Rb25De - Changed Coil Packs - Ran Well For Approx 40Kms Then Started Misfiring Again.

lkp

By lkp,
in Engines & Forced Induction

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lkp Rookie

lkp

Posted
Posted

Had a misfiring problem - took it to local mechanic who replaced one coil pack and the car was running well for 1 day then misfire returned. I used one of the diy tutorials to replace all coil packs. car ran fine for approx 40kms then started misfiring again - nowhere near as bad as they were misfiring before I changed all the coil packs but misfiring nonetheless.What could be causing this?? Anybody?

lkp Rookie

lkp

Posted
  • Author
Posted

No, did not change plugs - they were all replaced about 7 months ago....(am checking them all today, though)

I went a bit cheap on the coil packs - FUJI Ultra sparks (sold by osaka.co.nz) ($345 for all six)

WMDC35 Experienced

WMDC35

Posted
Posted (edited)

as above, weak coils prob fouled old plugs, just change them, haven't heard of those coils, maybe they're getting weak already, go for .8 plugs

(this isn't forced induction performance related haha)

Edited by WMDC35
  • 2 weeks later...
OEM_as_f*ck Apprentice

OEM_as_f*ck

Posted
Posted

Plugs are most likely covered in shit from driving around with f**ked coilpacks. Change them.

If your mechanic changed one coilpack, I would never go back there again. Unless you told him to quick-fix it and change one.

Its like buying one new tyre, or replacing one big end bearing, or one brake pad. Just stupid.

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