Fuel system leak?

[sofa]

i have a check engine light on and scanned it thru it was some kind of small leak in the fuel system i was wondering if anyone else has had this problem. its a 99 with 180k and i dont think its the gas cap thanx again

[Redog]

I had a small leak in a regualtor. I needed an "O" ring in the "Cap"

I don't know the exact term, but it was a brass colored cap (Looked like a soda bottle cap) on the side of the motor just under the intake and it was leaking a bit.

I'm talking for the 3400 standpoint

[sofa]

alright ill try that thanx man