EWG GTX3071 rich at idle

[Don]

Had these same issues but with my stock car. The orings inside the HPFP were leaking fuel into the head allowing it to get into the oil. Take off your oil cap and see if it smells more of gas than it usually does! Quite a few of us here have had this problem

[Bob-o]

Originally Posted by Don Had these same issues but with my stock car. The orings inside the HPFP were leaking fuel into the head allowing it to get into the oil. Take off your oil cap and see if it smells more of gas than it usually does! Quite a few of us here have had this problem

Hmm. By o-rings, you mean inside the actual housing, or the one that you can see/seats when installing the pump?

I'll have to open up the gas cap and see if she stank!

[Don]

Inside the housing...I'll link a thread that helped me ..


CX7 fuel in oil

Somewhere in that thread a guy has a link to the part. Mazda won't just sell the oring

[Bob-o]

Thanks Don!

So as far as what the CX7 thread has to say (as far as I understand), the o-ring that is leaking fuel in the HPFP is giving off gas vapours which are enough to throw off LTFT's, and the overall air/fuel mixture. Easy way to check to see if it's good is by undoing the side hex bolt on the HPFP housing and seeing if any fuel spills out. Fuel in chamber = o-ring is no bueno. (Written down for my own and other people's potential reference).