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Hey,

My GTS4 is now only running on 4 cylinders and i dont know y?

i was thinkingmaybe 2 of the coils were stuffed but i dont know how to check them, i know the sparkplugs are near new so dont think it will be them as theyre denso iridium ones aswell

any help appreciated, cheers

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https://www.sau.com.au/forums/topic/224893-rb20det-running-on-4-cylinders/
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ive had a rb20det with the same issue it end up being the resistor box for the 1st and 2nd injector. wriggle the wiring harness going into it and see wat it does.... either way the fix was a new res pack as soon as it was plugged it all fixed. just check that aswell

ok sweet, ive just had my mate over and we checked all the coils, turns out that Coil #2 was shot, so now im looking for a new coil. hopefully that fixes the problem

if not ill be back here for some more help

cheers

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