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-   -   M.a.s. Adjustment screw help!! (https://www.yotatech.com/forums/f116/m-s-adjustment-screw-help-179987/)

yota4life6 04-18-2009 11:05 AM

M.a.s. Adjustment screw help!!
 
Can someone help me with adjusting what I assume is the air adjustment screw on my mass airflow sensor by my intake?
I have been having trouble with passing emissions and not sure if that is adjusted properly.. My CO levels at emissions were 7 times what is allowed!!

I tend to smell a bit of gas form time to time, which I guess would explain the rich readings and failures??

Should that screw be turned futher towards left or right??

any advice is appreciated!
Neal

TNRabbit 04-18-2009 11:49 AM

There is no MAF on 2nd gen trucks, only a VAFM & there's no screw adjustment. Got pics of what you're talking about??

InternetRoadkill 04-18-2009 11:52 AM

I'm guessing he's turning the idle bleed on the throttle body.

yota4life6 04-21-2009 10:42 AM

I have a cold air intake and right after the air filter there is a MAS... mass air flow sensor... or at least thats the part name that I was given when purchasing it.. Its got a screw adjustment on it that I was told adjusts your lean/rich mixture...

the reason I am targeting this is b/c I have exhausted all other repairs regarding my 7.89 CO level at my failed emissions testing.. legal limit is 1.29... was I told right on the adjustment screw?

thanks

TNRabbit 04-21-2009 10:53 AM

Got any pics?

InternetRoadkill 04-21-2009 11:00 AM

What year and engine?

yota4life6 04-22-2009 05:29 AM

its a 95 3.0 auto.. let me see about getting a pic on here...


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