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Old 08-20-2009, 09:04 AM   #1
nicksamba_18
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Default Changed plug, ran fine, then sputtering and misfiring again....hallllp

So cyl#2 was misfiring, started simple and changed out the plugs on both cyl 2 and 4. I took the car out for a drive to ensure all was well, after 10 minutes with about 3 min of spirited driving it went back to misfiring.

Injector?
Coil pack?
Injector?

What are your experiences?
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Old 08-20-2009, 11:31 AM   #2
bzbuzz
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what plug are you running? stock?
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Old 08-20-2009, 11:42 AM   #3
nicksamba_18
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Yes, I bought stock replacements

Mods are intake and turbo back
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Old 08-20-2009, 03:01 PM   #4
nicksamba_18
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anybody?

I plan on doing the work tonight, but needs some direction.
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Old 08-20-2009, 09:03 PM   #5
lotarg
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You use 93 octane gas right?
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Old 08-20-2009, 09:44 PM   #6
nicksamba_18
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Always
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Old 08-21-2009, 02:43 PM   #7
DCales
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What engine management are you using? Stock, Cobb, Etc... If you have a volt/ohm meter you can do some quick tests on the coil and injector to see if the resistance is within spec. Also could test for power to both while your at. You may want to consider having a compression test done to see if it is a mechanical issue. Also check the spark plugs that you installed to see if you may have damaged the insulation while installing as that does happen on occasion.
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Old 08-21-2009, 06:12 PM   #8
nicksamba_18
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I bought a new coil pack today, installing around 9pm.

I am on stock engine management.

What is the spec on the ohms in the coil, it was tested last night but I dont know what the resistance should be.
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Old 08-21-2009, 06:14 PM   #9
nicksamba_18
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I cant really get a compression test done, the car is sitting in my garage right now. I am almost afraid to drive it becuase I dont want to cause anymore damage.

Trying to avoid getting this damn thing towed.
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Old 08-21-2009, 07:24 PM   #10
yarrgh
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switch coils and/or injectors to different cylinders, see if misfire codes follow.
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Old 08-21-2009, 07:30 PM   #11
nicksamba_18
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Great idea, however, I do not have a code reader.
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Old 08-21-2009, 07:36 PM   #12
gopsu
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this seems like a really easy problem...

Just swap out coil packs to see if code go away - I've done this before.
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Old 08-24-2009, 12:50 PM   #13
nicksamba_18
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.....was the coil pack, replaced and fixed.
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