cylinders 2 and 4 running rich :confused:
4 Attachment(s)
So I'd been wondering why in the hell my car was cruising/idling/everything pig rich (like 11.5 and richer CONSTANTLY) and thought I'd change my plugs. This is what came out, cyl 1 on left, 4 on right:
Attachment 212784 Attachment 212785 So, judging by those, I don't think it's my tune... Here's two logs, just driving normally to and from work: |
are you even getting fuel in 1 and 3?
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I would think so? There's a bit of soot on them, just not as much as 2 and 4.
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I don't know dude, I'd clean/replace the plugs and look again in a few days.
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Swap injectors around.
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I'd try swapping your injectors around and see if the problem moves with them. You might have two leaky ones.
*edit* sam beat me to it. |
maybe, but not unless/until the symptoms repeat.
identify a problem before looking for a solution. |
I should mention the car idles like a Subaru and bucks a lot during cruise, definitely NOT smooth anymore. I remember the cylinders are batch-fired and was wondering if that might have anything to do with it.
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i think the batches are 1+2 & 3+4. a quick trip to madracki would tell for sure.
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spark is 23 14
fuel is 13 24 |
I'd assume you are getting spark on all 4 since its running super as nasty rich on 2 and 3 and the way its batched....
so either you have 2 dead injectors, or two leaky injectors, or im completely wrong. |
Leaky injectors would be a good explanation, but the fault in it is that it might not be that likely that both 2 and 4 started leaking simultaneously.
I just got the taillight too man, thanks! |
Could you post your MSQ? I'd like to take a look and see if there are any settings for different fueling on the separate injector channels.
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Originally Posted by Matt Cramer
(Post 267069)
Could you post your MSQ? I'd like to take a look and see if there are any settings for different fueling on the separate injector channels.
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Curious where that goes. I'm wondering if something burned out in the MS, just leaving the injectors on. That, or a short somewhere.
Did it happen suddenly? Does it always do it, or is it on and off? |
1 Attachment(s)
Here's the .msq \/
Abe: That's what I was thinking might possibly be the problem, but didn't want to jump to that conclusion lest it be something more simple. It always does it, I can't remember when it started but it hasn't let up since I first noticed it happening. It's like clockwork; after startup, AFRs will be around 15:1, then climb to 17:1ish, then drop steadily to 11.5ish, sometimes 10:1 in cruise. Just measured my MPG - 16 MPG... |
Oh, it doesn't happen for a while?
If you run it for a while, 20 min or something, shut it off then immediately start it again, how is it? I wonder if it's electronics heating up.... |
post a log too. needs more log.
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your ego settings and AFR table are screwy.
RPM Based ACCEL needs to be off. ASE table should go to 0% at 160* timing and fuel tables at idle look crazy low. overboost is at -5.7psi, might screw things up. |
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