Take a look at my plugs. (running rich)
1 Attachment(s)
So, i thought i would be able to read my spark plugs and see what was going on. I guess not. Can anyone help me out? My car has been getting richer and richer (as indicated by my uego) I used to be running 12.5:1 from 0-5psi and then 11.5:1 from 5-14psi. Now, i am getting low 10's under boost. Cruise used to be around 18:1 and now its around 14:1. Idle used to be around 13:1 now it is high 10's/low 11's. Sometimes my idle afr just stays at 10.0:1. I would think that if the car was running this rich at idle, it would be sluggish to rev and you would smell gas in the exhaust. Neither is true. So, i am thinking maybe a problem with my uego. The sensor is at the end of the down pipe right before the flex piece. Here is a picture of my spark plugs.
Attachment 212688 (god i love macro function on cameras) |
Oh, this is after about 300 miles and some boost while passing or owning some douche on the interstate.
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Why does it look like the first three plugs have an almost non-existent gap while the 4th has a large gap? Shadow?
Rich mixture at idle makes for good throttle response actually. 10:1 is a little over board but it does help some when compared to a much leaner 15:1 at idle. Atleast that's been my experience when accel enrichment isn't being used. |
I just took a little cruise in the car and it is around 10:1 all the time. Much of the time, the uego is reading 10.0. Under full throttle, the car bucks, and burps, and struggles. Something has changed. I haven't messed with the car any. The car was running perfect. I put down 219whp a week ago and now this. I am a little confused.
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Logggggggggggggggggggggggggggggggggggggggggggg.
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Originally Posted by Braineack
(Post 271612)
Logggggggggggggggggggggggggggggggggggggggggggg.
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http://mike.vorefamily.net/thewooden.../4log_3259.jpg
Because plug reading doesn't work unless you pull them right after a WOT run. |
Originally Posted by Braineack
(Post 271612)
Logggggggggggggggggggggggggggggggggggggggggggg.
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well then!
it rolls down stairs and over your neighbors' dog. |
uhh wess i am thinking your eugo is out of wak
Most Ms users have issues getting aem's to interface. I would recalibrate and then check the WB grounds to make sure you aren't getting voltage offsets. |
well, i figured it out. The wire going to my AIT sensor was broken. I guess thats what i get for getting a connector from a junk yard and using the wires that were on it. I figured it out because i went into megatune and the manifold air temp said 43* now that i think about it, the car ran better at night when it was in the 50's and ran like shit today when it was around 90.
sorry for bad punctuation. I am on a 7" laptop. |
glad you found it!
win for you. |
and why are you running a 6 heat range? but they look great IMO, i dont see any detonation.
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Originally Posted by bryantaylor
(Post 271689)
and why are you running a 6 heat range? but they look great IMO, i dont see any detonation.
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Originally Posted by Braineack
(Post 271702)
because a 6 heat range for a 1.8L is one step colder :)
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Originally Posted by Braineack
(Post 271702)
because a 6 heat range for a 1.8L is one step colder :)
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is a good plug to have.
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Originally Posted by Braineack
(Post 271781)
is a good plug to have.
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yeah, you technically want the hottest plug you can get away with.
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I see, so in other words, since i have no knock with a heat range 6, there is no reason to go colder.
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