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Old 09-26-2020, 09:02 PM   #1
Rek670
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Member#: 513254
Join Date: Apr 2020
Default Loss of spark Cylinder 1

I have a 2000 Subaru Legacy single turbo swapped. So let’s call it a 2002 wrx for diagnostics since most of it is very similar.

Now when this first started to happen, on a cold start the car would run fine but during a warmup after about 5 minutes it’ll snap out of it and instantly start running rough, checked coil packs by unplugging one by one and cylinder 1 being unplugged had zero change, swapped a coil pack from 1 to 3 the problem remained in cyl. 1. No trouble codes could mean some kind of bad connection somewhere or a sensor that is weak but not dead possibly. When this happens it sometimes and I mean sometimes not all the time it kills the o2 sensor voltage (new o2 sensor) I am viewing this via data log. I have cleaned both the cam and crank sensors but have yet for my new ones to come in. Any other things I should look at? Sometimes I have a tough time conveying a problem over text but I hope I did up a half decent introduction to this gremlin I’m facing.

Cheers.
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Old 09-26-2020, 09:06 PM   #2
subaru_gc8
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Join Date: Nov 2002
Chapter/Region: SCIC
Location: Orange County CA
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2004 WRX wagon
silver

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have you tried changing your spark plugs?
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Old 09-26-2020, 09:50 PM   #3
Rek670
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Quote:
Originally Posted by subaru_gc8 View Post
have you tried changing your spark plugs?
Yes I forgot to mention to compliment the rest of the attempts to fix this it got new BKR7EIX plugs
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