I have a 1998 accord with a 2.3 ULEV 4cylinder motor and it has 127k on it. I bought it and the oil was mixing in the coolant system. I replaced the head gasket head bolts and had the cylinder head machined. The problem came right back. What else could it be?? Should I just replace the gasket again? Any help would be appreciated??

 

You're definitely not the first person to have this problem, and won't be the last - I've seen it happen at least a dozen times. The problem isn't the head gasket. You likely have a cracked sleeve, block, or head. I never recommend replacing head gaskets with the F23A4; they're a bit notorious for this problem. You should have just replaced the whole engine from the start. You can often pick up a complete used engine from a local salvage yard with a 6-month part-only warranty for as little as $250.

 

u have a block problem, its cracked, it causes the oil to join the antifreeze. or it could be a cracked head. chk her out!

 

How can I figure out whether it is the head or the block? Thanks guys~

 

take the head off and look to see inside the cylinders if there is antifreeze in there,and check if there is oil in the water jackets....u have cracked head/block!