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silvrmazda3

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PostSubject: need some help   Wed Apr 11, 2012 10:29 pm

any ideas on why my car is running lean? i recently checked my plugs and they where white as hell? all i have done to my mazda 3 2.3l is full vibrant exhaust.... im gonna check the fuel pressure tomorrow and clean the injectors... any good injector cleaners you guys recommend and any other ideas on why it might be running lean please let me know thank u
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Mclovin23
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PostSubject: Re: need some help   Wed Apr 11, 2012 10:34 pm

have you ever hooked that thing up to a wideband? adding full exhaust is most likely gonna lean it out some.

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Petes71cam
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PostSubject: Re: need some help   Wed Apr 11, 2012 11:03 pm

seafoam or lucas are good cleaners
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silvrmazda3

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PostSubject: Re: need some help   Wed Apr 11, 2012 11:55 pm

yea i had a wide band before it read 12 i believe i dont remember... i think im gonna try sea foam
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240sxguy
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PostSubject: Re: need some help   Thu Apr 12, 2012 8:33 am

12 is rich on an n/a motor. Is the car displaying any OBD codes?
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HoosierDaddy
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PostSubject: Re: need some help   Thu Apr 12, 2012 8:58 am

petes71cam wrote:
seafoam or lucas are good cleaners
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LLcoolJames
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PostSubject: Re: need some help   Thu Apr 12, 2012 9:33 am

there could be 50 different reasons why your car might be running lean. Before you start pouring things like seafoam in your gas tank get ahold of a obd2 scanner and someone who knows how to use it and what to look for.

Also, in my opinion, gas additive injector cleaners are a waste of money. If your injectors are actually plugged you will be better off taking them into a shop equipped with a good injector cleaner setup and get them cleaned up the right way. Although nowadays its often cheaper just to get new injectors than to get them cleaned. Just dont go spend seven dollars on a can of seafoam that probly wont do anything to help your cause.
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blown383z28
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PostSubject: Re: need some help   Thu Apr 12, 2012 10:04 am

LLcoolJames wrote:
there could be 50 different reasons why your car might be running lean. Before you start pouring things like seafoam in your gas tank get ahold of a obd2 scanner and someone who knows how to use it and what to look for.

Also, in my opinion, gas additive injector cleaners are a waste of money. If your injectors are actually plugged you will be better off taking them into a shop equipped with a good injector cleaner setup and get them cleaned up the right way. Although nowadays its often cheaper just to get new injectors than to get them cleaned. Just dont go spend seven dollars on a can of seafoam that probly wont do anything to help your cause.

yea what he said.
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Disgustang
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PostSubject: Re: need some help   Thu Apr 12, 2012 10:18 am

I bet it isn't lean...... Cruise A/F will be in the 14.7ish area. That will leave plus white. WOT A/F can range but 12-13 is "normal" tuned range for an N/A car. That is what will color the plug but would take some time to show on your application.
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OJDAJUICEMAN
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PostSubject: Re: need some help   Thu Apr 12, 2012 11:54 am

^ yep. Most plugs will look white when you take them out. Its normal. And if you just have a catback its not going to change your A/F ratio.

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silvrmazda3

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PostSubject: Re: need some help   Thu Apr 12, 2012 12:25 pm

the only OBD code i have is my downstream o2 and thats because of the exhaust...i think im just gonna take it in to my friends shop and see what he says lol thanks alot guys i appreciate the help
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OJDAJUICEMAN
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PostSubject: Re: need some help   Thu Apr 12, 2012 12:26 pm

I think your worrying about a problem that isnt there.

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Disgustang
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PostSubject: Re: need some help   Thu Apr 12, 2012 12:32 pm

FartapotomosCholesterauls wrote:
I think your worrying about a problem that isnt there.
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Overboosting
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PostSubject: Re: need some help   Thu Apr 12, 2012 2:16 pm

FartapotomosCholesterauls wrote:
I think your worrying about a problem that isnt there.


And I don't think seafoam will help even if there is a problem
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silvrmazda3

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PostSubject: Re: need some help   Thu Apr 12, 2012 3:34 pm

im not worried just kinda odd i guess
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Disgustang
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PostSubject: Re: need some help   Thu Apr 12, 2012 3:48 pm

That's the thing it's not odd.......
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LLcoolJames
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PostSubject: Re: need some help   Thu Apr 12, 2012 4:38 pm

brngrhd wrote:
That's the thing it's not odd.......

Get a scanner on and check out what the fuel trims look like. They are probly normal and then you can go about your day and stuff.
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silvrmazda3

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PostSubject: Re: need some help   Sat Apr 14, 2012 8:13 pm

well just checked the codes lol my downstream o2 sensor is shit....theres a idle code and one code said its running rich???? and there was 6 pending
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silvrmazda3

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PostSubject: Re: need some help   Sat Apr 14, 2012 8:19 pm

ill post the code up later
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LLcoolJames
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PostSubject: Re: need some help   Sat Apr 14, 2012 8:37 pm

alot of good information there.... What are the long and short term fuel trims
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Disgustang
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PostSubject: Re: need some help   Sat Apr 14, 2012 8:38 pm

Down stream 02 does nothing for the mixture or driveability it is only to monitor the cat. As far as the running rich code I have seen that before. That is a code based off of the adaptive fuel numbers if it has to pull a bunch of fuel the numbers get out if wack...... It may or may not be running rich. I have seen bad upstream 02's make a motor think it is rich so it sets fuel system rich too. It also will pull fuel. White plug are not abnormal at all, but since you have white plus and not dark plugs id say your not rich and the 02 is bad causing a false rich reading.
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