what would cause bad gas mileage...b16a is running swell/normal. just seems to be using more gas now , than it had in the last 4 months.

 

when the last time u had a tune up ex. sparkplugs, fuel filter ,cap rotor and the main thing 02 sensor and pcv valve.

 

ive forgotten where the pcv valve is....
I think I could use two new o2's and the pcv valve.....
17-20mpg's in the city

 

What and where is a pcv valve?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sick hatchem &raquo;</TD></TR><TR><TD CLASS="quote">What and where is a pcv valve?</TD></TR></TABLE>

positive crankcase ventilation , its usually found between the intake runners and has a hose attached to it that terminates at the plenum.

basically it takes any blowby oil and inserts it back into the combustion chamber to be burned off reducing your octane rating and robbing power.

catch cans are your friend.

 

So do you replace the pcv valve, or clean it? OR do you remove it for better gas mileage.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sick hatchem &raquo;</TD></TR><TR><TD CLASS="quote">So do you replace the pcv valve, or clean it? OR do you remove it for better gas mileage.</TD></TR></TABLE>

replace it! It's cheap...