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Old 04-06-2020, 12:18 PM   #26
subaru_gc8
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Quote:
Originally Posted by jugomutt View Post
Update: new coilpacks are in- they made zero difference, the issue is still present. I was hoping they would at least reduce the issue but the misfiring/CEL flashing is behaving identical to the way it was before.

I'm thinking next I will:
- Gap down the plugs
- Replace the pigtail connector/wires for cam sensor. What are the odds of this being the issue?
- Any other ideas?
did you buy oem coils or aftermarket?
I had a misfire code on my 207 when one of my avcs solenoids was going out, it took having a osciliscope to diagonse that bad boy though.
If you want to really just figure out what is going on, I would take it to a shop. youre at a place that you are unsure and we are unsure and if you dont have the right equipment to diagnose, they its going to be a guess in the dark
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Old 04-06-2020, 04:29 PM   #27
Fierysun
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Originally Posted by dr20t View Post
This was my original advice. Something you should have checked before accusing people of costing others money unnecessarily.

I’ll stand by the comment that even if he gapped them down to 0.024 per your advice - the fundamental source issue would remain and potentially create further headaches for diagnosis in future (especially if he sold the car to someone unsuspecting at some point)
I'm accusing you, because you keep pushing for coil replacement with all your self justifications. Bad advise.
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Old 04-06-2020, 08:05 PM   #28
dr20t
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Originally Posted by Fierysun View Post
I'm accusing you, because you keep pushing for coil replacement with all your self justifications. Bad advise.


Maybe if you could structure a coherent sentence and learn how to provide rational reasoning for your thoughts there would be some semblance of a respectable discussion here. But you seemingly lack the capability to do that.

Evidence of my advice is in this thread per the above quote. And I stand by it as a method of diagnosis. You on the other hand have not provided any rhyme or reason for your continued repetition of “just gap them down”

Perhaps your method of regurgitating **** from your keyboard whilst never turning a spanner in your life has worked against others before - but this isn’t my first rodeo champ. And I’m always one to appreciate and adopt new learnings and growth in my knowledge base - something you should think about instead of blindly spewing ignorant-laden criticisms.

Anyway to the OP - I hope you find the source and please update this thread if you get the chance to confirm what it was.

Mick
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Old 04-07-2020, 08:57 PM   #29
jugomutt
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I bought a set of new aftermarket coils off Amazon. They were cheap and the reviews were good, I wouldn't suspect the new coils of having anything to do with it.

No need to argue or point fingers lol. Nobody held a gun to my head and ordered me to buy new coilpacks lmao. They were crusty and old so I figured I might as well replace them anyway. Everyone is just trying to help and I appreciate everyone's opinion/experience.

Yes, I should've regapped the plugs first but I didn't for 2 reasons:

1. The packaging said not to. I only read the packaging at the point of installing them. I already had the old plugs out and had to make a choice then and there as to whether I was going to regap and I decided not to.
2. I installed the same plugs previously on my stock EJ20K powered STi without gapping and with no issue so I just did the same.

I'm leaning towards this being an electrical issue possibly. There was one day about a month or 2 ago where there was no issue or flashing CEL, regardless of how I drove. The only thing noteworthy I can remember about that day is the weather was warmer (12⁰ C VS below freezing normally).

The other thing to note is the issue is RPM related, more than it is best related. Ex) It will misfire at 5100rpm regardless of whether I'm at holding light throttle or WOT at full boost.
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Old 04-07-2020, 09:40 PM   #30
dr20t
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Try the cam position sensor. Check it firstly for continuity / electrical plug fraying / wires misplaced etc. Then trace it back to your main harness and see if it’s been depinned or damaged.

Failing that, see if you can check with a good second hand working one for diagnosis.

Good luck mate

Mick
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Old 04-09-2020, 02:11 PM   #31
subaru_gc8
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Quote:
Originally Posted by jugomutt View Post
I bought a set of new aftermarket coils off Amazon. They were cheap and the reviews were good, I wouldn't suspect the new coils of having anything to do with it.

No need to argue or point fingers lol. Nobody held a gun to my head and ordered me to buy new coilpacks lmao. They were crusty and old so I figured I might as well replace them anyway. Everyone is just trying to help and I appreciate everyone's opinion/experience.

Yes, I should've regapped the plugs first but I didn't for 2 reasons:

1. The packaging said not to. I only read the packaging at the point of installing them. I already had the old plugs out and had to make a choice then and there as to whether I was going to regap and I decided not to.
2. I installed the same plugs previously on my stock EJ20K powered STi without gapping and with no issue so I just did the same.

I'm leaning towards this being an electrical issue possibly. There was one day about a month or 2 ago where there was no issue or flashing CEL, regardless of how I drove. The only thing noteworthy I can remember about that day is the weather was warmer (12⁰ C VS below freezing normally).

The other thing to note is the issue is RPM related, more than it is best related. Ex) It will misfire at 5100rpm regardless of whether I'm at holding light throttle or WOT at full boost.
just my experience with aftermarket trash, there seems to be about a 50 50 shot of it actually working. but the oem stuff seems to be alot better as far as being good right out of the box, if you are going to buy aftermarket, try to buy denso
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Old 05-02-2020, 04:47 PM   #32
Zach201
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Quote:
Originally Posted by jugomutt View Post
I bought a set of new aftermarket coils off Amazon. They were cheap and the reviews were good, I wouldn't suspect the new coils of having anything to do with it.

No need to argue or point fingers lol. Nobody held a gun to my head and ordered me to buy new coilpacks lmao. They were crusty and old so I figured I might as well replace them anyway. Everyone is just trying to help and I appreciate everyone's opinion/experience.

Yes, I should've regapped the plugs first but I didn't for 2 reasons:

1. The packaging said not to. I only read the packaging at the point of installing them. I already had the old plugs out and had to make a choice then and there as to whether I was going to regap and I decided not to.
2. I installed the same plugs previously on my stock EJ20K powered STi without gapping and with no issue so I just did the same.

I'm leaning towards this being an electrical issue possibly. There was one day about a month or 2 ago where there was no issue or flashing CEL, regardless of how I drove. The only thing noteworthy I can remember about that day is the weather was warmer (12⁰ C VS below freezing normally).

The other thing to note is the issue is RPM related, more than it is best related. Ex) It will misfire at 5100rpm regardless of whether I'm at holding light throttle or WOT at full boost.
I have had Chinese coil packs fail within a few months. I ended up buying used OEM ones and have had no issues with them since.
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Old 05-03-2020, 01:05 AM   #33
Fierysun
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Quote:
Originally Posted by dr20t View Post
Maybe if you could structure a coherent sentence and learn how to provide rational reasoning for your thoughts there would be some semblance of a respectable discussion here. But you seemingly lack the capability to do that.

Evidence of my advice is in this thread per the above quote. And I stand by it as a method of diagnosis. You on the other hand have not provided any rhyme or reason for your continued repetition of “just gap them down”

Perhaps your method of regurgitating **** from your keyboard whilst never turning a spanner in your life has worked against others before - but this isn’t my first rodeo champ. And I’m always one to appreciate and adopt new learnings and growth in my knowledge base - something you should think about instead of blindly spewing ignorant-laden criticisms.

Anyway to the OP - I hope you find the source and please update this thread if you get the chance to confirm what it was.

Mick
I didn't see this earlier, but no biggie. Your method is crap and there's no need for anyone to take anything you post seriously.
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Old 05-19-2020, 08:37 AM   #34
dr20t
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Quote:
Originally Posted by Fierysun View Post
I didn't see this earlier, but no biggie. Your method is crap and there's no need for anyone to take anything you post seriously.


Lol ok

OP I hope you have sorted the issue mate and good luck with it if not.

Mick
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