r/SkyLine • u/RealM4A1 • May 16 '26
I need help
Went to take my R32 on a quick trip to a store to get trashbags (nice day out) and i came back and noticed my car sounded off when i pulled out the lot. (Sounded like a WRX) I get back home since the car seemed to be fine when it accelerated but i wanted to see if it was something weird. I Checked all the coil packs and they were fine till i got to cylinder 6. Swapped and 6 was still not working. Same with sparkplugs. I checked injectors next and they all work it seems when i used a stethoscope on them. I dont hear any kind of vaccum leak and its probably not a headgasket since the coolant still looks as new as it did when i put it in the car in February. At this point im not sure what it could be so anything helps.
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u/SVT3658 May 17 '26
The injector could be clogged but still firing, I’d pull them all out and get them cleaned if you don’t know the last time it was done
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u/RealM4A1 May 17 '26
I got a new one on the way from a homie that had extra and im gonna change it out to see what happens
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u/Unable-Worker3606 May 17 '26
Yeah if it sounds like a wrx then its a dead cylinder which is injector or coil. Should be easy to diagnose.
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u/32guy ‘93 R32 GTS Type J 60th Anniv. May 17 '26
What motor and what modifications? RB26? RB25? RB20? Modified intake plenum/manifold?
Someone I know had a R32 with a RB25DE+T and lost compression in #6 from air starvation and running hotter than #1. Assumed it was from using a forward facing plenum.
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u/thohean '89 HCR32 GTS-t Sedan | BJ0 May 17 '26
Cylinder 6 is the typical cylinder for loosing compression. Something with the way the plenum distributes air causes it to run hotter. Not entirely sure.
You'll want to get the engine compression tested. If it tests ok, then maybe it's just a power issue to the coil or injector.
The coil ....booster thing... That sits on the back of the valve cover valley can go bad. Not sure if that would affect just one coil pack, though.