i am new and really need some help withe check engine light

[r_code72]

update: fuel pressure is fine, although fuel volume is hard to check and considering the size motor and needs.. volume was not my first thought. we sprayed a few cans of cleaner around the intake and under hood hoses and no change in anything. there are no exhaust leaks anywhere, and all is tight.
No, I have not change the fuel filter, but will do that in the morning.
I do not know what a 'smoke test is", but if I am told I will try it.
the computer has been cleared and re-examined several times.

thanks to all. I will not give up if you don't

[tom4bren]

The next easy/cheap thing to do is replace the PCV. Ours are notorious for clogging. It doesn't seem like it would be the cause but it is listed as one of the possibilities.

Another thing to try is to add a bottle of fuel treatment to the tank. Another cheap/easy thing to try but I wouldn't hold out much hope of it making a significant difference.

The last easy thing to try (if you can find it in your area) is to fill up with a full tank of ethanol free fuel. When my Proton's MAF was acting wonky, it only threw a code whenever I was below 1/2 tank.