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#1
11-07-2016, 05:54 PM
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Weak cylinder
Need some help here. I finished installing a manual and when I started it up one cylinder seems to be weak. Not a total misfire. It sounds like a lumpy V8 and you can feel a vibration when under power. Not nice and smooth like it should be. I pulled motor and had valves redone so no valve problem. Would a weak coil or bad injector cause this?
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#2
11-15-2016, 06:31 AM
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Re: Weak cylinder
Bad injector can and if you let it go on for too long it can lead to a clogged cat. Ask me how I know.
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[SIGPIC][/SIGPIC] STi BBS wheels,legacy gt 4.44, 3" catback exhaust, Stance GR+ 7k/5k, QS Teflon adjustable endlinks, Hankook EVO 245/40/17, 95-LS escaine seats, GC8 V7 steering wheel, JDM clear corners, small car clear lenses, Alcyone badge, JDM rear taillight, 97 grille, stevesby bumper, PWR radiator, Perrin Crank pulley, Urethane Swaybar bushings, urethane diff bushings, DDM 6k 55watt lows and 4500k 35watt fog lights; $15/15min mod, Motorsport whs 22mm rear swaybar, QC shift kit, ToMyx intake, z32 aluminum calipers 13" rotors, nitrous express proton + wet kit.
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#3
11-15-2016, 06:33 AM
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Re: Weak cylinder
While it's running disconnect the injector clips one by one until the idle has no change. That's your bad injector or misfiring cylinder
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[SIGPIC][/SIGPIC] STi BBS wheels,legacy gt 4.44, 3" catback exhaust, Stance GR+ 7k/5k, QS Teflon adjustable endlinks, Hankook EVO 245/40/17, 95-LS escaine seats, GC8 V7 steering wheel, JDM clear corners, small car clear lenses, Alcyone badge, JDM rear taillight, 97 grille, stevesby bumper, PWR radiator, Perrin Crank pulley, Urethane Swaybar bushings, urethane diff bushings, DDM 6k 55watt lows and 4500k 35watt fog lights; $15/15min mod, Motorsport whs 22mm rear swaybar, QC shift kit, ToMyx intake, z32 aluminum calipers 13" rotors, nitrous express proton + wet kit.
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#4
11-20-2016, 09:52 AM
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Re: Weak cylinder
Thanks for the reply. I decided to take the car to a local shop that specializes in Subarus. They checked it out and said the problem was the motor and tranny had very little play in the rubber mounts and what I was feeling was normal engine vibrations. Not sure I agree with that as the motor just sounds different even at idle. But I think I will just drive it and see how it goes.
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