Take a look at my plugs. (running rich) - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


MEGAsquirt A place to collectively sort out this megasquirt gizmo

Reply
 
 
 
LinkBack Thread Tools
Old 06-15-2008, 03:30 PM   #1
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Aug 2007
Location: Southern Indiana
Posts: 1,371
Total Cats: -1
Default Take a look at my plugs. (running rich)

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.

Name:  100_9836.jpg
Views: 4
Size:  97.7 KB

(god i love macro function on cameras)

Last edited by wes65; 06-15-2008 at 03:43 PM.
wes65 is offline   Reply With Quote
Old 06-15-2008, 03:31 PM   #2
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Aug 2007
Location: Southern Indiana
Posts: 1,371
Total Cats: -1
Default

Oh, this is after about 300 miles and some boost while passing or owning some douche on the interstate.
wes65 is offline   Reply With Quote
Old 06-15-2008, 04:03 PM   #3
Elite Member
iTrader: (13)
 
cjernigan's Avatar
 
Join Date: Oct 2006
Location: Atlanta, GA
Posts: 8,147
Total Cats: 6
Default

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.
cjernigan is offline   Reply With Quote
Old 06-15-2008, 05:18 PM   #4
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Aug 2007
Location: Southern Indiana
Posts: 1,371
Total Cats: -1
Default

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.
wes65 is offline   Reply With Quote
Old 06-15-2008, 06:04 PM   #5
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,896
Total Cats: 1,792
Default

Logggggggggggggggggggggggggggggggggggggggggggg.
Braineack is online now   Reply With Quote
Old 06-15-2008, 06:12 PM   #6
Elite Member
iTrader: (22)
 
Join Date: Dec 2006
Location: Sunny Spanish speaking Non US Caribbean
Posts: 3,257
Total Cats: 3
Default

Quote:
Originally Posted by Braineack View Post
Logggggggggggggggggggggggggggggggggggggggggggg.
lollllllllllllllllllllllllllllllllll !
Rafa is offline   Reply With Quote
Old 06-15-2008, 06:29 PM   #7
Elite Member
iTrader: (24)
 
Join Date: Jul 2007
Location: Cypress, TX
Posts: 3,778
Total Cats: 35
Default


Because plug reading doesn't work unless you pull them right after a WOT run.
Bryce is offline   Reply With Quote
Old 06-15-2008, 06:30 PM   #8
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Aug 2007
Location: Southern Indiana
Posts: 1,371
Total Cats: -1
Default

Quote:
Originally Posted by Braineack View Post
Logggggggggggggggggggggggggggggggggggggggggggg.
yeah, yeah. I should've known you were going to say that.
wes65 is offline   Reply With Quote
Old 06-15-2008, 07:01 PM   #9
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,896
Total Cats: 1,792
Default

well then!

it rolls down stairs and over your neighbors' dog.
Braineack is online now   Reply With Quote
Old 06-15-2008, 07:46 PM   #10
:(
iTrader: (7)
 
Join Date: Jul 2006
Location: nowhere
Posts: 8,281
Total Cats: 2
Default

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.
magnamx-5 is offline   Reply With Quote
Old 06-15-2008, 08:45 PM   #11
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Aug 2007
Location: Southern Indiana
Posts: 1,371
Total Cats: -1
Default

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 **** today when it was around 90.

sorry for bad punctuation. I am on a 7" laptop.
wes65 is offline   Reply With Quote
Old 06-15-2008, 08:46 PM   #12
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,896
Total Cats: 1,792
Default

glad you found it!

win for you.
Braineack is online now   Reply With Quote
Old 06-15-2008, 08:54 PM   #13
I'm Miserable!
iTrader: (5)
 
bryantaylor's Avatar
 
Join Date: Dec 2006
Location: jacksonville, fl
Posts: 1,720
Total Cats: 0
Default

and why are you running a 6 heat range? but they look great IMO, i dont see any detonation.
bryantaylor is offline   Reply With Quote
Old 06-15-2008, 09:09 PM   #14
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,896
Total Cats: 1,792
Default

Quote:
Originally Posted by bryantaylor View Post
and why are you running a 6 heat range? but they look great IMO, i dont see any detonation.
because a 6 heat range for a 1.8L is one step colder
Braineack is online now   Reply With Quote
Old 06-15-2008, 09:27 PM   #15
I'm Miserable!
iTrader: (5)
 
bryantaylor's Avatar
 
Join Date: Dec 2006
Location: jacksonville, fl
Posts: 1,720
Total Cats: 0
Default

Quote:
Originally Posted by Braineack View Post
because a 6 heat range for a 1.8L is one step colder
i see said the blind man
bryantaylor is offline   Reply With Quote
Old 06-15-2008, 11:57 PM   #16
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Aug 2007
Location: Southern Indiana
Posts: 1,371
Total Cats: -1
Default

Quote:
Originally Posted by Braineack View Post
because a 6 heat range for a 1.8L is one step colder
Yep, anybody have any input on whether 6 is cold enough? Should i go with 7?
wes65 is offline   Reply With Quote
Old 06-16-2008, 12:05 AM   #17
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,896
Total Cats: 1,792
Default

is a good plug to have.
Braineack is online now   Reply With Quote
Old 06-16-2008, 12:06 AM   #18
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Aug 2007
Location: Southern Indiana
Posts: 1,371
Total Cats: -1
Default

Quote:
Originally Posted by Braineack View Post
is a good plug to have.
what is? the bkr6e?
wes65 is offline   Reply With Quote
Old 06-16-2008, 12:19 AM   #19
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,896
Total Cats: 1,792
Default

yeah, you technically want the hottest plug you can get away with.
Braineack is online now   Reply With Quote
Old 06-16-2008, 01:01 AM   #20
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Aug 2007
Location: Southern Indiana
Posts: 1,371
Total Cats: -1
Default

I see, so in other words, since i have no knock with a heat range 6, there is no reason to go colder.
wes65 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 59 Yesterday 09:00 PM
Changing from 460cc to flow force 610cc in diypnp 90 Turbo MEGAsquirt 19 10-19-2015 04:23 PM
Back to Stock Part Out!! Turbo Parts, MS2 Enhanced 01-05, Suspension, and MOAR! StratoBlue1109 Miata parts for sale/trade 16 10-02-2015 10:39 AM
Time to start learning and play with tuning The Gleas MEGAsquirt 3 10-01-2015 10:30 AM
Got bad Crank Angle Sensor and Random Misfire codes, but runs fine. Greasyman General Miata Chat 2 09-28-2015 11:44 AM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 03:13 PM.