'99 lx evap leak
 

I have a '99 accord lx auto. Sorry, I don't know the engine displacement.
the check eng. light comes on , but doesn't flash. I had a suzuki tech scan it, and it came up with a 1570 code. Evap system leak. I changed the gas cap with a new honda part, but it still codes. It will come on with no rhyme or reason that I can tell. Perhaps it is more likely to happen when it drops below a 1/4 tank, but I can't be sure of that. Thanks for the help.

I don't have P1570 in my list...
EVAP leak codes are P1456 & P1457. Have someone read the code again?

A loose gas cap should set off P1456, but it could be anything else that makes the gas tank not airtight (like it should be).

If it's P1457 then the leak is in the canister system somewhere. Several solenoid valves & vacuum hoses & the actual canister itself might even be cracked.